Journal articles on the topic 'Mandibular ramu'
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Bento, Maria Izabel Cardoso, Edgard Michel Crosato, Bianca Marques Santiago, Evelyne Pessoa Soriano, Marcus Vitor Diniz de Carvalho, Patrícia Moreira Rabello, Luiz Francesquini Júnior, Adriana Conrado de Almeida, and Reginaldo Inojosa Carneiro Campello. "Análises quantitativas em mandíbulas para estimativa do sexo." Research, Society and Development 10, no. 4 (April 18, 2021): e45910414284. http://dx.doi.org/10.33448/rsd-v10i4.14284.
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Objetivou-se investigar a aplicabilidade de medidas mandibulares para estimativa do sexo em crânios secos humanos de duas coleções osteológicas brasileiras. Este foi um estudo do tipo diagnóstico, cego, com 471 mandíbulas de 215 mulheres e 256 homens. As variáveis consideradas foram: largura bigonial; largura bicondilar; largura do processo condilar direito/esquerdo; largura do coronóide; distância entre os forames mandibulares; distância entre os forames mentais; distância entre os forames espinhais geniais e os forames mandibulares direito/esquerdo; altura do processo coronóide direito e esquerdo; altura do ramo mandibular direito/esquerdo; espessura mandibular direita/esquerda; espessura mandibular anterior; largura máxima do ramo mandibular direito/esquerdo; largura mínima do ramo mandibular direito/esquerdo; comprimento mandibular; e o ângulo mandibular. A análise discriminante foi realizada para verificar as associações em relação ao sexo, tanto para as medidas individuais quanto para o total. A análise estatística indicou que todas as variáveis apresentaram associação significativa com o sexo. Quando aplicado a homens e mulheres, o método stepwise classificou corretamente 77,50% e 80,20% dos casos, respectivamente, com percentual total de concordância de 78,70%. A altura do ramo mandibular esquerdo (74,80%) e a largura bigonial (77,60%) foram as variáveis com maiores taxas de concordância entre homens e mulheres, respectivamente. Equações foram geradas a partir da análise discriminante para cada variável e uma fórmula única para as seis variáveis que apresentaram maior preferência por sexo. Todas as medidas mandibulares foram estatisticamente diferentes entre os sexos, sugerindo que a mandíbula desempenha um papel importante na antropologia forense como fonte de informação quantitativa para estimativa do sexo.
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Yeung, Andy Wai Kan, and Natalie Sui Miu Wong. "Medial Sigmoid Depression of the Mandibular Ramus as a Lesion-Mimicking Anatomical Variation: A Systematic Review." International Journal of Environmental Research and Public Health 18, no. 8 (April 17, 2021): 4271. http://dx.doi.org/10.3390/ijerph18084271.
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(1) Background: Medial sigmoid depression (MSD) of the mandibular ramus is an anatomical variation that resembles non-odontogenic cystic lesion. (2) Aim: The aim of this systematic review was to survey the literature to identify the relevant journal publications, reveal their scientific impact in terms of citations and compare the reported prevalence of MSD. (3) Materials and methods: PubMed, Google Scholar, Scopus and Web of Science were queried to identify relevant publications. The search string was: “medial depression of mandibular ramus” OR “medial depression of the mandibular ramus” OR “medial depression of the mandibular rami” OR “medial depression of mandibular rami” OR “medial sigmoid depression”. (4) Results: Eight studies were identified. Dry mandibles and patient dental panoramic radiographs were evaluated in four and seven of the eight studies, respectively. The prevalence of MSD varied from 20.2% to 82.0%. In male and female patients, the prevalence was 18.3–76.0% and 22.0–64.0%, respectively. MSD tended to occur bilaterally and most prevalent in patients with Angle’s Class II occlusion. The semilunar and triangular shapes were more common than teardrop and circular shapes. The most cited study had 12 citations. (5) Conclusions: MSD was a seldom investigated and cited anatomical variation that was not uncommon. Its recognition should be further promoted.
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Hsu, Kun-Jung, Yu-Chuan Tseng, Shih-Wei Liang, Szu-Yu Hsiao, and Chun-Ming Chen. "Dimension and Location of the Mandibular Lingula: Comparisons of Gender and Skeletal Patterns Using Cone-Beam Computed Tomography." BioMed Research International 2020 (February 14, 2020): 1–6. http://dx.doi.org/10.1155/2020/2571534.
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Objective. The study aimed to investigate and measure the anatomical relationship between the mandibular lingula (Li) and skeletal patterns using cone-beam computed tomography (CBCT). Materials and Methods. In total, 72 participants (23 men and 49 women) were categorized into three groups according to their skeletal patterns (specifically, the A point–nasion–B point (ANB]) angle) as follows: Class I (0° < ANB < 4°), Class II (ANB ≥ 4°), and Class III (ANB ≤ 0°). The CBCT images of 144 rami were collected, and the distance from the Li to the external oblique ridge (Li-EOR), internal oblique ridge (Li-IOR), posterior border of the ramus (Li-PBR), inferior border of the ramus (Li-IBR), sigmoid notch (Li-Sm), and mandibular foramen (Li-MF) was examined. The Li-hMF (horizontal distance from the Li to the MF) and Li-vMF (vertical distance from the Li to the MF) were measured. The comparisons of gender, side (right and left), and skeletal patterns were then evaluated by statistical analysis. Results. The values of the Li-EOR and Li-PBR (19.99 mm and 15.93 mm, respectively) were significantly higher in men than in women (18.85 mm and 14.89 mm, respectively). Moreover, the Li-IBR was higher in men (32.91 mm) than in women (30.40 mm). Both sides (right and left) and skeletal patterns demonstrated that the Li-EOR, Li-IOR, and Li-PBR were not significantly different. Pearson’s correlation test reported a strong correlation between the Li-EOR and Li-IOR (r=0.610). Conclusion. The distances from mandibula lingula to the external oblique ridge, posterior border of ramus, and inferior border of ramus were significantly longer in men than in women. Similarly, both horizontal and vertical distances from the lingula to the mandibular foramen were significantly longer in men than in women. Therefore, the results demonstrated that the Li was longer and more protruding in men than in women. With respect to the horizontal distance from the mandibular lingula to the mandibular foramen, of the three types of the skeletal system (Class I, Class II, and Class III), Class III was the significantly largest.
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Kumar Singh, Ashutosh, Jitendra Sah, Safal Dhungel, and Manish Yadav. "MANDIBULAR BODY OSTEOTOMY FOR SKELETAL CLASS III MALOCCLUSION: A CASE-BASED REVIEW." Journal of Chitwan Medical College 10, no. 4 (December 16, 2020): 103–7. http://dx.doi.org/10.54530/jcmc.271.
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Mandibular step body osteotomy has been out of favour since more stable ramus osteotomies were refined and used for jaw deformities. Mandibular body osteotomy still has certain indications for which it is preferable over ramus osteotomies. Mandibular body osteotomy is best suited to correct prognathism caused by mandibular body excess with a retained tooth or in presence of extraction space, with good posterior occlusion, when ramus osteotomies and setback will lead to loss of the last tooth and non-obtuse gonial angle. Other indications are apertognathia, mandibular asymmetry and small advancements of the anterior mandible. Here we present a case 24 year male with a skeletal class III malocclusion managed with an intraoral mandibular step osteotomy and setback of 8 mm. One-year followup has shown minimum neurosensory and odontogenic complications associated with mandibular step osteotomy and very high satisfaction among the patient. We also present a brief review of the indications, modifications and refinement of the technique and summarize current published clinical usage. This is a very stable osteotomy with favourable fracture pattern and does not involve stripping or change in position of muscles of mastication thereby ensures long term stability and minimal risk of relapse. This surgery also has minimal effect on airway narrowing compared to the ramus osteotomy setback. For some specific indications not suited to a sagittal split ramus osteotomy, mandibular body step osteotomy still has relevance and usage.
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Paramita Samanta, Prajna, and Poonam Kharb. "MORPHOMETRIC ANALYSIS OF MANDIBULAR FORAMEN AND INCIDENCE OF ACCESSORY MANDIBULAR FORAMINA IN ADULT HUMAN MANDIBLES OF AN INDIAN POPULATION. Análisis morfométrico del foramen mandibular e incidencia de la foramina mandibular accesoria en mandíbulas adult." Revista Argentina de Anatomía Clínica 5, no. 2 (March 28, 2016): 60–66. http://dx.doi.org/10.31051/1852.8023.v5.n2.14059.
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El foramen mandibular es un importante hito anatómico. Para procedimientos como el bloqueo alveolar inferior del nervio, el tratamiento con implantes y osteotomías mandibulares, un profundo conocimiento de la ubicación del foramen mandibular (MF) y el foramen mandibular accesorio (AMF) es un requisito previo. Hay pocas referencias en la literatura con respecto a la localización anatómica exacta del foramen mandibular. Por lo tanto, el presente estudio tuvo como objetivo identificar la ubicación exacta de la MF y la incidencia de la AMF alrededor MF en una población india. Sesenta (60) mandíbulas humanas adultas fueron estudiadas para determinar la distancia del LV de la los anteriores, bordes posteriores de la rama mandibular, maxilar inferior categoría y el ángulo de la mandíbula. AMF todo el MF también fueron estudiados por su presencia y números. La distancia media de MF del borde anterior de rama mandibular fue 15,72 ±2,92 mm(lado derecho), 16,23 ±2,88 mm(lado izquierdo), de borde posterior fue 13,29 ±1,74 mm(lado derecho) y 12,73 ±2,04 mm(a la izquierda lado). La MF se encuentra 22,70 ±3 mm(lado derecho) y 22, 27 ± 2,62 mm(lado izquierdo) de la muesca mandibular. La distancia de MF de ángulo de la mandíbula fue 21,54 ±2,92 mm(lado derecho) y 21,13 ±3.43 mm(lado izquierdo). AMF estuvieron presentes en el 16, 66% de las mandíbulas. En 10% de las mandíbulas una sola AMF estaba presente y en el 6,66% hubo dos agujeros presentes. La ubicación del MF y AMF es importante para evitar compli-caciones como hemorragia y parestesia durante los procedimientos quirúrgicos orales y también para los radioterapeutas en la planificación de la radioterapia. The mandibular foramen is an important anatomical land mark. For procedures like inferior alveolar nerve block, implant treatment and mandibular osteotomies, a thorough knowledge of the location of the mandibular foramen (MF) and accessory mandibular foramina (AMFs) is a prerequisite. There are few references in the literature regarding the exact anatomical location of the mandibular foramen. Therefore, the present study was aimed to identify the precise location of the MF and the incidence of AMFs around MF in an Indian population. Sixty (60) adult human mandibles were studied to determine the distance of the MF from the anterior, posterior borders of the mandibular ramus, mandibular notch and angle of the mandible. AMFs around the MF were also studied for their presence and numbers. The average distance of MF from the anterior border of mandibular ramus was 15.72 ±2.92 mm(right side), 16.23 ±2.88 mm(left side), from posterior border was 13.29 ±1.74 mm(right side) and 12.73 ±2.04 mm(left side).The MF was located 22.70 ±3 mm(right side) and 22.27 ±2.62 mm(left side) from mandibular notch. The distance of MF from angle of mandible was 21.54 ±2.92 mm(right side) and 21.13 ±3.43 mm(left side). AMFs were present in 16.66% of mandibles. In 10% mandibles a single AMF was present and in 6.66 % double foramina were present. Location of MF and AMF is important to avoid complications like hemorrhage and paresthesia during oral surgical procedures and also for radiotherapists in planning radiation therapy.
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Saleh, Edwyn, Prihartiningsih Prihartiningsih, and Rahardjo Rahardjo. "Odontektomi Gigi Molar Ketiga Mandibula Impaksi Ektopik dengan Kista Dentigerous secara Ekstraoral." Majalah Kedokteran Gigi Klinik 1, no. 2 (June 29, 2016): 85. http://dx.doi.org/10.22146/mkgk.11956.
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Gigi dikatakan impaksi ektopik apabila mengalami malposisi yang disebabkan oleh faktor kongenital atau mengalami perubahan posisi yang disertai dengan kondisi patologis. Kondisi patologis yang sering menyertai gigi impaksi ektopik adalah kista dentigerous. Tujuan dari studi pustaka ini adalah untuk memaparkan odontektomi pada kasus molar ketiga ektopik yangdisertai dengan kista dentigerous. Operasi ini adalah untuk menghilangkan faktor penyebab terjadinya kista dentigerous serta membersihkan lesi kista agar tidak berkembang semakin membesar. Pasien laki-laki 38 tahun mengeluhkan adanya sedikitbenjolan pada pipi sebelah kanan namun tanpa disertai rasa sakit. Benjolan dirasakan mulai muncul dalam satu tahun terakhir.Hasil pemeriksaan radiografik menunjukkan gigi molar ketiga mandibula kanan berada pada sudut angulus mandibula disertaiadanya gambaran radiolusen pada mahkotanya didiagnosa sebagai impaksi ektopik gigi molar ketiga mandibula kanan disertaikista dentigerous. Tindakan operasi odontektomi dan enukleasi kista dentigerous dilakukan secara ekstraoral dengananastesiumum, pemilihan metode pengambilan ekstraoral karena posisi gigi yang telah berubah jauh dari posisi normal gigimolar ketiga mandibula. Telah dilakukan pengambilan gigi molar ketiga mandibula yang impaksi ektopik dan enukleasi kistadentigerous secara ekstraoral, karena posisi gigi impaksi yang ektopik di ramus mandibula. Pengambilan gigi impaksi secaraekstraoral sangat jarang sekali dilakukan, namun jika posisi gigi berada jauh sekali dari posisi normal maka pendekatanekstraoral merupakan metode operasi yang akan mempermudah proses pengambilan gigi dan enukleasi kista serta dapatmeminimalkan hilangnya tulang mandibula yang sehat. ABSTRACT: Odontectomy of Ectopic Third Molar Associated with Dentigerous Cyst in Submandibular Region. Ectopic impacted tooth has been defined as malpositioned tooth caused by congenital factor or malpositioned tooth associated with pathologic condition. Pathologic condition associated with ectopic impacted tooth is dentigerous cyst. The purpose of this operation is to eliminate the causes of the dentigerous cyst and to raise cyst lesions that do not develop as they grow. A 38-year-old male patient complained of a painless slight swelling on his right cheek which occurred in the last one year. The radiograph examination shows an ectopic right mandibular third molar at the posterior border of the right angle of mandible, with an associated coronal radiolucency diagnosed as ectopic impacted right mandibular third molar associated with dentigerous cyst. The tooth and the cyst were removed surgically under general anesthetic via an extra-oral approach due to an extreme malposition of the tooth. The ectopic impacted right mandibular third molar and associated dentigerous cyst had been removed and enucleated surgically via extra-oral approach because the location of the ectopic impacted tooth was in the ramus of mandible. Extra-oral removal of ectopic mandibular third molar is very rare, however this approach will facilitate an easy removal and enucleation of an extremely malpositioned mandibular third molar associated with dentigerous cyst and minimize a loss of healthy mandibular bone.
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Swari, Rumartha Putri, Arfan Badeges, and Vera Julia. "Mandibulektomi segmental dengan rekonstruksi cangkok tulang fibula non-vaskularisasi pada pasien ameloblastoma tipe folikulerSegmental mandibulectomy with non-vascularised fibular bone graft reconstruction in follicular ameloblastoma patient." Jurnal Kedokteran Gigi Universitas Padjadjaran 32, no. 3 (February 28, 2021): 143. http://dx.doi.org/10.24198/jkg.v32i3.31485.
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Pendahuluan: Ameloblastoma adalah tumor invasif lokal dengan insidensi kekambuhan yang tinggi jika tidak dieksisi sepenuhnya. Mandibulektomi segmental sebagai pilihan tatalaksana yang dapat menyebabkan deformitas dan asimetri pada wajah, serta masalah pengunyahan. Pemulihan defek setelah reseksi mandibula menimbulkan masalah yang cukup berat. Tujuan laporan kasus ini untuk melaporkan hasil rekontruksi menggunakan cangkok tulang non-vaskularisasi mandibulektomi segmental pada pasien dengan ameloblastoma mandibula. Laporan kasus: Pria berusia 33 tahun datang ke Poliklinik Rawat Jalan Bagian Bedah Mulut dan Maksilofasial RS Persahabatan dengan keluhan utama pembengkakan mandibula yang perlahan bertambah dan tidak nyeri sejak enam tahun lalu. Pemeriksaan ekstra oral tampak asimetri wajah, bukaan mulut tidak ada limitasi, tidak teraba pembesaran kelenjar getah bening regio leher. Pemeriksaan intraoral didapatkan adanya benjolan regio mandibula kiri dengan batas tegas, konsistensi padat, permukaan tampak trauma oklusi gigi antagonis, immobile, dan terdapat nyeri tekan. Gambaran radiologis menunjukan lesi radiolusen multilokuler menyerupai honeycomb pada corpus mandibula kiri meluas ke regio ramus mandibula kiri. Pemeriksaan biopsi menunjukkan hasil ameloblastoma tipe folikuler pada mandibula kiri dan dilakukan mandibulektomi segmental dengan rekonstruksi cangkok tulang fibula non-vaskularisasi. Sembilan bulan setelah operasi, cangkok tulang non-vaskularisasi tidak menunjukkan komplikasi intraoral dengan bekas luka submandibular ekstraoral baik. Simpulan: Cangkok tulang fibula non-vaskular dapat dipertimbangkan sebagai salah satu pilihan untuk rekonstruksi setelah mandibulektomi segmental pada pasien ameloblastoma.Kata kunci: Mandibulektomi segmental, cangkok fibula non-vaskularisasi, ameloblastoma folikuler. ABSTRACTIntroduction: Ameloblastoma is a locally invasive tumour with a high incidence of recurrence if not completely excised. Segmental mandibulectomy as a treatment option that can cause facial deformities and asymmetry and mastication problem. Recovery of the defect after mandibular resection presents a severe problem. This case report was aimed to report the results of reconstruction using a segmental non-vascularised mandibulectomy bone graft in a patient with mandibular ameloblastoma. Case report: A 33-year-old male came to the Outpatient Polyclinic of the Oral and Maxillofacial Surgery Division of Persahabatan General Hospital with the chief complaint of mandibular inflammation, which was slowly increasing yet painless since six years prior. Extraoral examination showed facial asymmetry, no limitation in mouth opening, no palpable enlargement of lymph nodes in the neck region. Intraoral examination revealed a lump in the left mandibular region with firm borders, solid consistency. The surface appears to be traumatic occlusion of the antagonist tooth, immobile, and tenderness was found. Radiological features showed a multilocular, honeycomb-like radiolucent lesion on the left mandibular body extending into the left mandibular ramus region. A biopsy showed follicular ameloblastoma in the left mandible, and a segmental mandibulectomy was performed with non-vascular fibular bone graft reconstruction. Nine months after surgery, non-vascular bone grafts showed no intraoral complications with either extraoral submandibular scar. Conclusion: Non-vascular fibular bone graft can be considered an option for reconstruction after segmental mandibulectomy in ameloblastoma patients. Keywords: Segmental mandibulectomy, non-vascularised fibula graft, follicular ameloblastoma.
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Mártha I., Krisztina, Cristina Bica, Blanka Kész, and Bernadette Kerekes Máthé. "A canalis mandibulae lefutásának vizsgálata különböző vertikális arctípusokban." Orvosi Hetilap 158, no. 46 (November 2017): 1841–47. http://dx.doi.org/10.1556/650.2017.30864.
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Abstract: Introduction: The precise knowledge of the position of canalis mandibulae and foramen mandibulae is important for surgical and endodontic interventions on the mandible. Aim: The aim of the study is to examine the position of these anatomical landmarks in different vertical facial types. Method: In the panorama radiograph of 26 normodivergent, 26 hypodivergent and 28 hyperdivergent arthritis (total of 1360 measurements) we measured the distance between the canalis mandibulae and interdental septums, the apex of the lateral teeth, the mandibular base, the goniac angle, and the steepness of the canal and the distance the foramen mandibulae to the anterior and posterior margin of the ramus. Results: ANOVA and t-test statistical analysis showed that the foramen mandibulae is farer from the posterior margin of the ramus in hipodivergent facial types, in hyperdivergent facial types the canalis mandibulae was closer to the root apex of posterior teeth and in hypodivergent types to the base of the mandible. In normal and hyperdivergent individuals, the canalis mandibulae runs steeper and in the course of running it is increasingly distanced from the tangent to the base of the mandible. Conclusion: The position of the canalis mandibulae and the foramen mandibulae showed significant differences in the different vertical facial types. Orv Hetil. 2017; 158(46): 1841–1847.
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Khoa, Tran Dang, Nguyen Duy Bac, Hoang Van Luong, Tran Ngoc Anh, Nguyen Thi Phuong, Vu Thi Nga, and Toi Chu Dinh. "Anatomical Characteristics of Facial Nerve Trunk in Vietnamese Adult Cadavers." Open Access Macedonian Journal of Medical Sciences 7, no. 24 (October 15, 2019): 4230–38. http://dx.doi.org/10.3889/oamjms.2019.366.
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BACKGROUND: In medical literature, there are few studies provided a precise and detailed description of the facial nerve rami and its branches.
AIM: Identify several practical anatomic landmarks related to the facial nerve main trunk and its rami.
METHODS: A descriptive study, 30 cadavers in the anatomy department of UPNT from October 2012 to April 2015.
RESULTS: The average distance from the mandibular angle to the division of the facial nerve is 40.8 mm, and is 86.6% from range 36 – 50 mm. There is 86.7% case in which the facial nerve is in the lateral of the retromandibular vein, and there is a significant difference about both sides. Eighty percent of the case has the superior and inferior ramus in the lateral to the retromandibular vein. There are 2 cases in which the superior ramus makes the circle of the vein. Eighty percent of the facial nerve is in the lateral to the external carotid artery.
CONCLUSION: The distance from the mandibular to the division of the facial nerve is longer. The relationship between the superior/inferior ramus and the retromandibular vein maybe not the same in both sides. In some cases, it makes the circle of the vein to cause some complication in the parotid gland surgery.
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Pinto, Maria Clara Gomes, Maria Eduarda Matos de Sousa, Daiane Leal da Silva, Abdo Antônio de Barros, and Bruna de Oliveira Reis. "BIFURCAÇÃO DO CANAL MANDIBULAR REVISÃO DE LITERATURA." Revista Ibero-Americana de Humanidades, Ciências e Educação 8, no. 11 (November 30, 2022): 1400–1411. http://dx.doi.org/10.51891/rease.v8i11.7732.
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Quando o canal mandibular apresenta segundo ramo, é chamado de bifurcado. Embora a bifurcação do canal mandibular seja considerada uma rara variação, deve ser cuidadosamente avaliada. Usualmente, o canal mandibular surge nas ortopantomografias como um túnel encerrado no osso, delimitado por bordos radiopacos, que se estende desde o forame mandibular até ao forame mentoniano, localizando-se normalmente diretamente por baixo dos ápices radiculares dos dentes mandibulares. Através do presente trabalho, foram esclarecidos conceitos, riscos e particularidades do canal mandibular bifurcado. A base de dados utilizada para a temática foi Google Acadêmico e SciELO, sendo usados os descritores em ciências da saúde (DeCS): “Mandíbula” “Canal Mandibular” e “Variação Anatomica”. Ao concluir o trabalho foi possível perceber a importância de se conhecer as variações do canal mandibular, pois reconhecer as estruturas anormais possibilita a prevenção de possíveis complicações que, em determinados casos, podem trazer consequências fatais durante os tratamentos na região mandibular.
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Trelia Boel and Savena Bala Kumar. "GAMBARAN KANALIS MANDIBULARIS KIRI SECARA RADIOGRAFI PANORAMIK PADA WARGA MEDAN SELAYANG." Dentika Dental Journal 18, no. 2 (December 4, 2014): 174–76. http://dx.doi.org/10.32734/dentika.v18i2.2026.
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Tujuan penelitian ini adalah untuk mengetahui gambaran kanalis mandibularis dan variasinya melalui radiografipanoramik pada warga di Kecamatan Medan Selayang. Radiografi dalam kedokteran gigi memainkan peran pentingdalam memperoleh informasi diagnostik . Variasi penyebaran kanal mandibula dapat dilihat melalui gambar radiografipanaromik . Hal ini sangat penting bagi semua dokter gigi untuk melakukan perawatan , seperti operasi gigi molar ketiga,implan dan membagi ramus osteotomy. Jenis penelitian ini adalah survei deskriptif dengan pendekatan cross-sectionaldengan 86 sampel, (laki-laki dan perempuan) di Kecamatan Medan Selayang berusia antara 32-72 tahun. Hasil penelitianmenunjukkan yang memiliki kanal mandibula kiri normal 100%. Sebagai kesimpulan, tidak terdapat variasi penjalarankanalis mandibularis kiri pada masyarakat di Kecamatan Medan Selayang berdasarkan gambaran radiografi panoramik.
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Fujii, Yasuyuki, Ayano Hatori, Miwa Horiuchi, Tomoko Sugiyama-Tamura, Hayato Hamada, Risa Sugisaki, Yuki Kanno, et al. "Computed tomography evaluation of risk factors for an undesirable buccal split during sagittal split ramus osteotomy." PLOS ONE 18, no. 3 (March 2, 2023): e0279850. http://dx.doi.org/10.1371/journal.pone.0279850.
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Sagittal split ramus osteotomy (SSRO) sometimes induces an irregular split pattern referred to as a bad split. We investigated the risk factors for bad splits in the buccal plate of the ramus during SSRO. Ramus morphology and bad splits in the buccal plate of the ramus were assessed using preoperative and postoperative computed tomography images. Of the 53 rami analyzed, 45 had a successful split, and 8 had a bad split in the buccal plate. Horizontal images at the height of the mandibular foramen showed that there were significant differences in the ratio of the forward thickness to the backward thickness of the ramus between patients with a successful split and those with a bad split. In addition, the distal region of the cortical bone tended to be thicker and the curve of the lateral region of the cortical bone tended to be smaller in the bad split group than in the good split group. These results indicated that a ramus shape in which the width becomes thinner towards the back frequently induces bad splits in the buccal plate of the ramus during SSRO, and more attention should be paid to patients who have rami of these shapes in future surgeries.
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Basuki, Williana, Jennifer E. Rawlinson, and Ross H. Palmer. "Repair of Bilateral Comminuted Mandibular Fractures in a 12-Week-Old Puppy Using Locking and Nonlocking Maxillofacial Reconstruction Plates." Journal of Veterinary Dentistry 35, no. 4 (December 2018): 258–67. http://dx.doi.org/10.1177/0898756418812818.
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A 12-week-old male intact French bulldog presented to a university teaching hospital for bilateral comminuted caudal mandibular fractures following an altercation with another dog. The fractures were stabilized using locking and standard maxillofacial miniplates. The 8-week and 14-week postoperative reexaminations and radiographs revealed eventual bony healing and remodeling of both mandibular rami, but multiple complications associated with the miniplates were encountered. These included intraoral wound dehiscence, implant fracture, implant loosening, sequestrum formation, and an impacted right mandibular fourth premolar. Implant failure on the alveolar border in this case report was associated with the resorption and new bone deposition of the rostral/caudal ramus, respectively, associated with mandibular growth. An alternate surgical option would have been use of a longer, larger bridging plate placed on the ventral border without use of a dorsal plate to minimize these complications.
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Tsai, Hung-Huey. "Panoramic radiographic findings of the mandibular growth from deciduous dentition to early permanent dentition." Journal of Clinical Pediatric Dentistry 26, no. 3 (April 1, 2002): 279–84. http://dx.doi.org/10.17796/jcpd.26.3.962294087538050m.
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The outlines of mandibular rami, condyles, coronoid process, and corpus in panoramic radiographs of normal children from deciduous to early permanent dentition were traced and digitized. Nine linear and four angular measurements were measured. During the observation period, the lengths for all the linear measurements increased, however, the angles for all the angular measurements decreased. The shape of condyle and gonion significantly correlated with the growth of ramus and corpus.
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Chen, Han-Sheng, Ying-Sheng Chen, I.-Ling Lin, and Chun-Feng Chen. "Antilingula as a Surgical Reference Point for Vertical Ramus Osteotomy." BioMed Research International 2021 (April 20, 2021): 1–6. http://dx.doi.org/10.1155/2021/5585297.
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Purpose. This study investigated the antilingula and its related landmarks, the mandibular rami, by using cone-beam computed tomography (CBCT). Methods. CBCT images of 37 patients (74 sides of the mandibular ramus) were collected. The landmarks of antilingula (AntiL), anterior ramus (A), posterior ramus (P), superior ramus (S), and inferior ramus (I) were identified. The distances (A-AntiL, P-AntiL, S-AntiL, and I-AntiL) were statistically evaluated according to gender, side (right and left), and skeletal patterns. Results. The distance from the antilingula to the anterior (A-AntiL) border of the ramus was significantly longer on the right side (14.69 mm) than on the left side (13.97 mm). Male patients had longer AntiL-P, AntiL-I, and S-I distances (18.96, 40.07, and 54.94 mm, respectively) than did female patients (16.66, 35, and 47.54 mm, respectively). Regarding skeletal patterns, the classes can be ordered as follows in terms of the measurements: class III>class II>class I. However, the differences between the classes were nonsignificant. Pearson correlation analysis revealed that gender and S-I distance were strongly correlated ( r = 0.667 ); specifically, male patients had a longer S-I distance. A-AntiL and A-P also exhibited a strong correlation ( r = 0.796 ). Conclusion. Antilingula-related distances did not differ between skeletal patterns. Among antilingula-related variables, A-AntiL could serve as a favorable measuring point during operation.
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ROCHA, Julierme Ferreira, Júlio César Silva de OLIVEIRA, José Wilson Noleto RAMOS, José Cadmo Wanderley Peregrino de ARAÚJO FILHO, Eduardo Sanches GONÇALES, Eduardo HOCHULI-VIEIRA, and Paulo Sérgio Perri de CARVALHO. "Enxerto ósseo mandibular, complicações associadas às áreas doadoras e receptoras, e sobrevivência de implantes dentários: um estudo retrospectivo." Revista de Odontologia da UNESP 44, no. 6 (October 6, 2015): 340–44. http://dx.doi.org/10.1590/1807-2577.1062.
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ResumoIntroduçãoEnxertos ósseos retirados da sínfise ou do ramo mandibular podem ser empregados para reconstrução de defeitos localizados dos maxilares, para permitir a instalação adequada de implantes dentários.ObjetivoEste estudo tem por objetivo avaliar a ocorrência de complicações associadas com as áreas doadoras e receptoras de enxerto ósseo mandibular, e a sobrevivência de implantes dentários instalados nesses sítios reconstruídos.Material e métodoAvaliaram-se 730 prontuários de pacientes submetidos a tratamento com implantes dentários. Desse universo, 72 pacientes, de ambos os gêneros, foram submetidos à reconstrução óssea com enxerto retirado da sínfise ou do ramo mandibular.ResultadoForam observadas 13 complicações e não houve diferença estatística significante quanto à ocorrência de complicações das áreas doadoras e receptoras, e da sobrevivência de implantes dentários instalados nos sítios reconstruídos com enxerto ósseo mandibular.ConclusãoOs enxertos ósseos mandibulares permitem a reconstrução de defeitos localizados dos maxilares e não são fatores de risco para a falha de implantes dentários.
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S, Nagaraj, Gayatri N, and Anil R. Sherke. "STUDY OF MANDIBULAR RAMUS BY METRIC PARAMETERS." International Journal of Anatomy and Research 5, no. 1.1 (January 31, 2017): 3358–61. http://dx.doi.org/10.16965/ijar.2016.476.
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Delanora, Leonardo Alan, Julio Cesar Silva de Oliveira, Tiburtino José de Lima-Neto, Mirela Caroline Silva, Nathália Januario de Araujo, Idelmo Rangel Garcia-Junior, and Leonardo Perez Faverani. "Estratégia para redução e fixação de fraturas mandibulares complexas. Um relato de caso." Research, Society and Development 10, no. 10 (August 21, 2021): e599101018815. http://dx.doi.org/10.33448/rsd-v10i10.18815.
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Fraturas mandibulares são relativamente comuns, porém os padrões de fratura e as modalidades de tratamento variam conforme as características anatômicas e biomecânicas da região. O presente artigo tem por objetivo realizar um relato de caso de um paciente de 80 anos, vítima de queda da própria altura, cursando com fratura mandibular atípica em região de corpo e ângulo mandibular esquerdo, com três traços de fratura se unindo na região posterior de ramo mandibular. O tratamento foi instituído conforme o padrão de fratura observado e seguindo os princípios de fixação interna rígida, com boa evolução pós-operatória, mesmo que o paciente ainda se apresente em acompanhamento. Com isso, pode-se concluir que se faz necessário o manejo adequado de qualquer padrão de fratura e uma proservação adequada de cada caso para diminuição da incidência de complicações pós-operatórias.
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Blatter, Jeannine, Laurence May, Anthony De Buys Roessingh, Laurent Medinger, and Martin Broome. "The Mandibular Ramus." Journal of Craniofacial Surgery 30, no. 8 (November 2019): 2590–92. http://dx.doi.org/10.1097/scs.0000000000005684.
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Liu, Yanfei, and Yunfeng Li. "BSSRO Improves Mandibular Morphology Mainly through Correction of Body Length and Volume in Patients with Asymmetric Mandibular Prognathism." Journal of Clinical Medicine 11, no. 23 (November 30, 2022): 7131. http://dx.doi.org/10.3390/jcm11237131.
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Purpose: The purpose of this study is to analyze the change and stability of mandibular morphology in patients with asymmetric mandibular prognathism after bilateral sagittal split ramus osteotomy (BSSRO). Methods: We retrospectively analyzed fifty patients with asymmetric mandibular prognathism from the West China Hospital of Stomatology, Sichuan University, between January 2018 to March 2021. The spiral CT data before surgery, within two weeks after surgery, and at more than six months after surgery of each patient were collected. According to the deflection direction of the chin, the bilateral mandibles were defined as the long side and the short side. The morphological data of the bilateral condyle, the mandibular ramus, and the mandibular body were analyzed to determine the effect and stability of BSSRO on asymmetric mandibular prognathism. Results: It was found that the long-side mandible had greater condylar volume and diameter, mandibular ramus height and volume, and mandibular body length and volume (p < 0.05) before surgery. After surgery, the volume of the mandibular ramus increased, while the length and volume of the mandibular body decreased (p < 0.05) at the long side of the mandible; the morphological changes of the mandibular ramus and body at the short side of the mandible were not statistically significant (p > 0.05). When comparing the long and short sides of the mandible, the long side still had greater height and volume of the mandibular ramus (p < 0.01). The volume difference of the mandibular body from the two sides was corrected (p > 0.05), and the length difference of the mandibular body from the two sides was overcorrected (p < 0.05). At more than six months after surgery, the volume of the mandibular ramus and body increased, while their height decreased at the long side of the mandible (p < 0.05). For the other side, or the short side, the volume of the ramus and body increased, too. However, their height decreased (p < 0.01). Conclusion: The results of this study suggested good effect and stability of BSSRO on asymmetric mandibular prognathism, except for the correction of ramus height and volume.
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S, Shivaprakash, and Ashok K R. "STUDY OF MANDIBULAR RAMUS AS PREDICTOR OF SEX." International Journal of Anatomy and Research 6, no. 4.2 (November 5, 2018): 5869–72. http://dx.doi.org/10.16965/ijar.2018.364.
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G., Deepa, and Shrikrishna B.H. "Morphometric Analysis of Dry Adult Human Mandibular Ramus." Indian Journal of Anatomy 5, no. 2 (2016): 179–83. http://dx.doi.org/10.21088/ija.2320.0022.5216.13.
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Tsai, Hung-Huey. "Factors associated with mandibular third molar eruption and impaction." Journal of Clinical Pediatric Dentistry 30, no. 2 (January 1, 2006): 109–14. http://dx.doi.org/10.17796/jcpd.30.2.k359u03v100586h3.
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A retrospective study, using panoramic radiographs, was conducted on 152 Taiwanese (72 males and 80 females) to investigate mandibular third molar eruption and impaction. The following measurements were made: inclinations and mesiodistal crown widths of the mandibular molars, vertical and horizontal spaces between the distal surface of the second molar and the anterior surface of the ramus, lengths and widths of the mandibular ramus and body, the ramus inclination, the mandibular plane angle, and the mandibular gonial angle. Differences between non-impaction and impaction groups were studied, and the variables were analyzed with multivariate discriminatory analysis. Significant differences between the two groups were found; variables describing spaces between the anterior of the ramus and the distal of the mandibular second molar and tooth size appeared to be the primary contributors to the differences observed.
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Salguero-Tamayo, Kevin Alexander, Estalin Andrés Sánchez-Yanza, and Mónica Sofía Pallo-Sarabia. "Efectividad de técnicas anestésicas en mandíbula." Revista Arbitrada Interdisciplinaria de Ciencias de la Salud. Salud y Vida 6, no. 3 (October 1, 2022): 1044. http://dx.doi.org/10.35381/s.v.v6i3.2336.
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Objetivo: Identificar diferentes técnicas anestésicas usadas en mandíbula. Método: Descriptivo documental con revisión de 15 artículos ubicados en base de datos PubMed. Conclusión: La técnica de anestesia en mandíbula con mejores resultados es la troncular, ya que logra bloquear todos los nervios de la rama mandibular, es decir nervio alveolar inferior, nervio lingual, nervio bucal, nervio milohioideo y auriculotemporal. La técnica infiltrativa también es de gran utilidad para el bloqueo de nervios mandibulares especialmente en el sector anterior o como complemento de la técnica troncular.
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Manzie, Timothy, and Emma Lewis. "Novel use of the transparotid approach to the mandible for benign pathology." BMJ Case Reports 13, no. 7 (July 2020): e233246. http://dx.doi.org/10.1136/bcr-2019-233246.
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Access to the mandibular ramus can be difficult. There are a number of described methods for accessing the mandibular ramus and condyle, including a transoral or transcutaneous approach. Access via a transoral approach prevents surgical scars but can result in an excessive amount of bone removal from the anterior mandibular ramus. The transparotid approach has been described and commonly used for the management of mandibular trauma. It allows for direct access to the mandibular ramus and condyle with a number of possible complications, including salivary fistula formation, sialocele and facial nerve injury. Despite these risks, this approach is commonly used in the setting of trauma. This case report describes an additional indication, the successful use of the transparotid approach for the management of benign odontogenic pathology.
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Kadam, Vighanesh, Hrushikesh Aphale, Sunil Kumar Nagmode, Vasant Pawar, Kunal Patil, Deepak Sahane, and Vivek Shinde. "The comparison between the lower airway space, mandibular body, mandibular ramus, chin thickness and chin throat length in vertical and horizontal growers among skeletal class I and skeletal class II patterns – Retrospective cephalometric study." IP Indian Journal of Orthodontics and Dentofacial Research 7, no. 3 (October 15, 2021): 229–36. http://dx.doi.org/10.18231/j.ijodr.2021.037.
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The vertical and horizontal growth influences the height of mandibular ramus and length of the mandibular body. The soft tissue chin thickness, the lower airway space and the chin throat length can vary in different growth patterns and different skeletal patterns. Lateral cephalograms of non-growing patients seeking orthodontic treatment (n=120) were included in the study. The samples were divided into two subgroups based on skeletal pattern (Cl I & Cl II) according to ANB angle and Wit’s appraisal. Further sub divided into four groups based on cephalometric mandibular plane inclination to anterior cranial base (SN-GoGn) and Frankfort’s mandibular plane (FMA) angle in hypodivergent and hyperdivergent patterns. The parameters lower airway space, mandibular body, mandibular ramus, chin thickness and chin throat length were measured. Results showed maximum lower airway space, mandibular body, mandibular ramus, chin thickness, and chin throat length in the hypodivergent skeletal Class I group. The minimum lower airway space, mandibular body, mandibular ramus, chin thickness, and chin throat length observed in the hyperdivergent skeletal Class II group. The inter-group comparison of all samples indicates that there was a statistically significant difference between various groups and the measures of the hypodivergent samples are more than the hyperdivergent samples irrespective of the skeletal pattern. The study concludes that the lower airway, mandibular ramus, mandibular body, soft tissue chin thickness, chin throat length was less in hyperdivergent skeletal Class I and skeletal Class II samples than the skeletal Class I and skeletal Class II hypodivergent.
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Koju, S., N. Maharjan, R. R. K. Rajak, D. K. Yadav, D. Bajracharya, and B. Ojha. "Assessment of Sexual Dimorphism in Mandibular Ramus: An Orthopanoramic Study." Kathmandu University Medical Journal 19, no. 3 (September 30, 2021): 314–19. http://dx.doi.org/10.3126/kumj.v19i3.49708.
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Background Mandible is the largest and strongest bone of the face, is very durable, and hence remains well preserved than many other bones. In cases of mass disasters where an intact skull is not found, the mandible may play a vital role in sex determination as it is the most dimorphic bone of the skull. Morphometric analysis of mandibular ramus provides highly accurate data to discriminate sex. This can be accomplished by the use of panoramic radiography which is widely available and is used routinely to assess the mandibular structures.
Objective To evaluate and compare the various parameters of the mandibular ramus and to determine the usefulness of the mandibular ramus as an aid in sex determination.
Method Orthopantomograms of 140 samples (70 males and 70 females) were collected from the archives and traced manually on matte acetate tracing paper. Various parameters of mandibular ramus were measured on the right and left sides. The obtained measurements were subjected to discriminant function analysis.
Result Mandibular measurements on the right side were greater than on the left side. However, only the ramus breath (minimum and maximum) and projective height of ramus were statistically significant (p < 0.05). All the measurements were higher for males than females. F-statistic values indicated that the highest sexual dimorphism was seen with the projective height of ramus and least with minimum ramus breath.
Conclusion Mandibular ramus measurements can be a useful tool for gender determination and can be an essential tool in forensic science especially when there is damaged or partially preserved mandibles and may be helpful for medico-legal purpose in Nepal.
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Agarwal, Padmanidhi, and Divya Mehrotra. "Mandibular Ramus Fractures: A Proposed Classification." Craniomaxillofacial Trauma & Reconstruction 13, no. 1 (February 10, 2020): 9–14. http://dx.doi.org/10.1177/1943387520903159.
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Aims: The purpose of this article was to study and devise a classification of fracture patterns of the mandibular ramus to facilitate management. Methods: Mandibular ramus fracture demographics in literature were reviewed along with evaluation of the patients diagnosed with mandibular ramus fractures who had reported to the emergency/outpatient clinic of our Institute in the last 5 years. Epidemiology of these ramus fractures was studied, and these ramus fractures were categorized into repetitive patterns on the basis of radiological observations in an effort to achieve a simplified classification. Results: A total of 1372 trauma patients were diagnosed with mandibular fractures, of which an incidence of 2.4% was recorded for ramus fractures. These were predominantly in males and mainly due to road traffic accidents commonly in people driving two-wheeler vehicles (64%). Ramus fractures seldom occur in isolation. Five predictable fracture patterns were observed and accordingly classified as types I to V. Type I was the most common and type IV the least. Open reduction was done in 45.5% patients with non-compression plating systems. Satisfactory aesthetic and functional outcomes were achieved in all patients. Conclusion: The mandibular ramus fractures although rare need to be well understood and demarcated. The classification highlights the importance of this mandibular buttress and focuses on the importance of its technically and anatomically more complicated fracture treatment. Future studies are needed to compare the modalities of management.
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Kanta, ManojKumar, SRaviraja Kumar, BV Harish, and AV Thomas Raja. "Rare mandibular ramus fracture." Annals of Maxillofacial Surgery 8, no. 1 (2018): 171. http://dx.doi.org/10.4103/ams.ams_193_17.
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Costa Filho, João Roberto Trindade, João Victor Soares Rodrigues, Natália Barbosa de Siqueira, Pedro Ivo Tavares Trindade, Naara Gabriela Monteiro, Leticia Palin Pitol, Ana Cláudia Ervolino da Silva, Eduardo Hochuli-Vieira, and Belmiro Cavalcanti do Egito Vasconcelos. "Enxerto de ramo mandibular para reconstrução maxilar em pacientes pós cirurgia ortognática: relato de caso." Research, Society and Development 10, no. 2 (February 24, 2021): e48010212756. http://dx.doi.org/10.33448/rsd-v10i2.12756.
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A ausência de tecido ósseo remanescente dos rebordos alveolares tem sido um grande problema para a reabilitação estética e funcional nos pacientes. O enxerto ósseo autógeno é o material ideal para reconstrução dos rebordos maxilares e mandibulares. A escolha da área doadora, seja intrabucal ou extrabucal, está relacionada com a quantidade e a qualidade do enxerto ósseo necessária para cada caso. O presente estudo tem por objetivo relatar um caso clínico de reconstrução maxilar em paciente após cirurgia ortognática utilizando-se como área doadora, a região de ramo mandibular, e revisar as principais características relacionadas à técnica cirúrgica.
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Suzuki, Naohiro, Akihiro Miyazaki, Tomohiro Igarashi, Hironari Dehari, Jun-Ichi Kobayashi, Yoshiki Miki, Kazuhiro Ogi, et al. "Relationship between Mandibular Ramus Height and Masticatory Muscle Function in Patients with Unilateral Hemifacial Microsomia." Cleft Palate-Craniofacial Journal 54, no. 1 (January 2017): 43–52. http://dx.doi.org/10.1597/14-329.
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Objective To clarify the relationship between mandibular ramus height and function of masticatory muscles in patients with hemifacial microsomia. Design Retrospective study of imaging and physiological data. Setting Images and physiological data were obtained from the records of Sapporo Medical University Hospital. Patients A total of 29 patients with hemifacial microsomia who showed Pruzansky grades I, II deformity. Main Outcome Measures Mandibular ramus height and masticatory muscle volume were evaluated with multi-detector row computed tomography. The electromyographic value was measured by the K7 Evaluation System. The hemifacial microsomia patients were classified into three groups based on the mandibular ramus height ratio of the affected and unaffected sides: group 0, > 1.00; group 1, 1.00 to 0.85; group 2, < 0.85. The Tukey-Kramer method and Games-Howell method were used to determine correlations between parameters. Results Decreased mandibular ramus height was significantly correlated with both reduced electromyographic values of the masseter muscle (P < .05) and the amount of mandibular lateral deviation at the time of maximum opening (P < .05) on the affected side. These differences were prominent in unilateral hemifacial microsomia patients classified as group 2. Conclusions Decreased mandibular ramus height may cause dysfunction of the masseter muscles but not the temporal muscle on the affected side in patients with hemifacial microsomia.
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Jadhav, Anendd, Bhushan Mundada, Rahul Deshmukh, Umesh Bhutekar, Atul Kala, Kapil Waghwani, and Apoorva Mishra. "Mandibular Ramus Fracture: An Overview of Rare Anatomical Subsite." Plastic Surgery International 2015 (November 3, 2015): 1–5. http://dx.doi.org/10.1155/2015/954314.
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Aim. The present study aims at exemplifying the incidence, and aetiology and analyses the outcomes of open reduction internal fixation (ORIF) over closed treatment of mandibular ramus fractures. Patients and Method. In the present retrospective analysis of mandibular fracture patients, variables analysed were age, sex, cause of injury, pretreatment occlusion, treatment given, period of maxillo-mandibular fixation (MMF), and posttreatment occlusion. Results. Out of 388 mandibular fractures treated, ramus fractures were 12 (3.09%). In the present study, predominant cause of mandibular ramus fracture was road traffic accident (RTA) n = 07 (58.33%) followed by fall n = 04 (33.33%) and assault n = 1 (8.33%). The average age was 35.9 years with a male predilection. Of these, 9 patients were treated with ORIF while remaining 3 with closed treatment. The average MMF after closed treatment was 21 days and 3 to 5 days after ORIF. There was improvement in occlusion in all 12 patients posttreatment with no major complication except for reduced mouth opening in cases treated with ORIF which recovered with physiotherapy and muscle relaxants. Conclusion. Mandibular ramus fractures accounted for 3.09% with RTA as a common aetiology. ORIF of ramus fractures facilitated adequate functional and anatomic reduction with early return of function.
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Lee, Jihye, Namki Choi, Byunggee Kim, and Seonmi Kim. "Assessment of the Position of the Mandibular Foramen and Mandibular Lingula in Children and Adolescents using CBCT." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 48, no. 1 (February 28, 2021): 64–76. http://dx.doi.org/10.5933/jkapd.2021.48.1.64.
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The purpose of this study is to evaluate the position of the mandibular foramen and location and morphological characteristics of the mandibular lingula using Cone-Beam Computed Tomography (CBCT). Mandibular CBCT images of children aged 6 - 16 years were collected. A total of 180 patients were divided into 3 groups, 6 - 7, 10 - 11 and 15 - 16 years, with 30 male and female patients per group. Either side of the ramus was analyzed. The shortest distances from the anterior, posterior, superior and inferior border of the ramus to the mandibular lingula were measured. The shortest distance between the mandibular lingula and the mandibular foramen was also measured. The vertical distance from the mandibular lingula and the mandibular foramen to the occlusal plane was measured. The shapes of the mandibular lingula was classified into 4 types according to the criteria. The distances of the mandibular lingula from the anteroposterior and vertical reference points of the ramus increased in all directions with age. The distance between the mandibular lingula and the mandibular foramen also increased with age. The location of the mandibular lingula and the mandibular foramen in relation to the occlusal plane moved upwards with age. The most common shape of the mandibular lingula was triangular, followed by nodular, truncated and assimilated, and there was no difference in the shape according to age. It is recommended that the horizontal insertion point of the anesthesia from the anterior border of the ramus increased to 17 mm, 18 mm, and 19 mm according to the age groups. It is also suggested that the vertical insertion point increased by 2 - 3 mm, 5 - 6 mm and 9 - 10 mm above the occlusal plane according to the age groups.
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Trinks, Pablo W., Mariano A. R. Amer, Federico Stolbizer, and Gabriel A. Sanchez. "ANÁLISIS DE CORRELACIÓN ENTRE VARIABLES MORFOMÉTRICAS DEL TERCER MOLAR INFERIOR Y MEDIDAS MANDIBULARES OBTENIDAS DE RX PANORÁMICAS." Revista Argentina de Anatomía Clínica 14, no. 1 (March 25, 2022): 8–14. http://dx.doi.org/10.31051/1852.8023.v14.n1.35674.
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Objetivos: determinar la correlación entre medidas del tercer molar inferior y mandibulares.
Materiales y métodos: en este estudio descriptivo fueron analizados los siguientes diámetros y longitudes del tercer molar inferior: longitud ocluso-apical (LOA), longitud ocluso-cérvico-vestibular (LOCV), longitud ocluso-cérvico-lingual (LOCL), diámetro mesio-distal (DMD) y diámetro vestíbulo-lingual (DVL). Por otro lado, las medidas mandibulares obtenidas del análisis por software de radiografías panorámicas digitalizadas (n=26), incluyeron: altura (AlR), ancho (AnR) y longitud (LR) de la rama mandibular, longitud del cuerpo mandibular (LC) y longitud del cóndilo (LCo). Se calculó la Media (M) y Error Estándar de la Media (EEM) de cada variable para su análisis estadístico, y su correlación se evaluó con un test de Pearson (p<0.05).
Resultados: Las medidas mandibulares (mm) obtenidas fueron: AlR= 61.4±1.7, AnR= 37.8±1.9, LR= 44.1±1.5, LC= 113.6±2.3, LCo= 22.7±0.6, mientras que las dentarias fueron: LOA= 17.9±0.3, LOCV= 7.6±0.1, LOCL= 6.6±0.1, DMD= 11.1±0.2 y DVL= 9.9±0.1. Se observaron correlaciones univariadas significativas entre AnR y DVL (r=0.64), AlR y LOA (r= 0.76), LC y DMD (r=0.57). Se observó que tanto las medidas transversales como las longitudinales de la mandíbula y el tercer molar tienden a correlacionarse entre sí.
Conclusiones: la correlación encontrada entre la morfometría del tercer molar y las medidas mandibulares ayudaría a estimar diámetros y longitudes del tercer molar a partir de radiografías panorámicas, siendo de utilidad en la planificación de cirugías de dicho molar.
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Hoque, Md Mesbahul, Shamim Ara, Shahanaz Begum, AHM Mostafa Kamal, and Sharmina Sayeed. "Morphometric Analysis of Dry Adult Human Mandibular Ramus." Bangladesh Journal of Anatomy 12, no. 1 (March 18, 2015): 14–16. http://dx.doi.org/10.3329/bja.v12i1.22612.
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Context: Mandible is the lower jaw bone providing attachment of muscles of mastication and facial expression and provides pathway for inferior alveolar nerve and vessels. The mandibular ramus is almost vertical in adult but more oblique in old age. The anterior part of ramus can be used as the donor site for reconstruction of small bone defects in the oral and maxillofacial region. A relatively short mandibular ramus may be an important unfavorable anatomic factor in difficult laryngoscopy. The aim of this study was to determine the morphometry of mandibular ramus from various anatomical landmarks in one hundred eighty five dry adult human mandibles. Materials and Methods: A cross-sectional, analytical type of study was conducted in the department of Anatomy, Dhaka Medical College, Dhaka from July 2010 to June 2011. Morphometry of mandibular ramus was measured with the help of digital sliding calipers. Results: The mandibular ramus was at the same distance from each landmark on both sides demonstrating symmetry. There was no significant difference in the values on the right and left sides of the mandibles. Conclusion: Anatomical knowledge of this study might be useful in certain surgical procedure. DOI: http://dx.doi.org/10.3329/bja.v12i1.22612 Bangladesh Journal of Anatomy, January 2014, Vol. 12 No. 1 pp 14-16
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Mahajan, Anupama. "Multiple unilateral accessory mandibular foramina-a case report." National Journal of Clinical Anatomy 01, no. 04 (October 2012): 190–92. http://dx.doi.org/10.1055/s-0039-3401687.
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AbstractAccessory foramina in the mandible are known to transmit branches of nerves supplying the roots of the teeth. The mandibular foramen is present on the inner surface of the ramus of the mandible which transmits the inferior alveolar nerve. An adult human mandible of unknown sex was found to have multiple mandibular foramina on the medial surface of right ramus. A large accessory mandibular foramen was present anterosuperior to the main mandibular foramen. The dimensions were 6 mm antero posteriorly and 11mm vertically. The dimensions of the mandibular foramen were 9 mm antero posteriorly and 12mm vertically. The distance between two foramina was 20 mm and between the accessory mandibular foramen and apex of lingula was 7 mm. The distance between the posterior border of the accessory mandibular foramen and posterior border of ramus were 15 mm. The accessory mandibular foramen led into a canal which was directed obliquely and joined the mandibular canal at the level of third molar tooth. Two more small mandibular foramina were present one just below the accessory mandibular foramen discussed above and second near the main mandibular foramen. Both of them were of too small size to measure. The accessory mandibular foramen is a rare variation and awareness of its incidence and its position is necessary. The structures passing through it can be compromised during surgical procedures of this area.
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Sinobad, Vladimir, Slobodan Dodic, Ljiljana Strajnic, and Miroslav Vukadinovic. "The effects of orthognathic surgery on mandibular movements in patients with mandibular prognathism." Srpski arhiv za celokupno lekarstvo 140, no. 11-12 (2012): 704–10. http://dx.doi.org/10.2298/sarh1212704s.
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Introduction. Mandibular prognathism, one of the most severe dentofacial deformities, affects the person?s appearance, psychological health and the quality of life in the most sensitive age period. Objective. The aim of this study was to evaluate the effects of sagittal split ramus osteotomy on the range of mandibular border movements in the early postoperative period. Methods. The study was conducted on 20 patients, of mean age 20.8 years, with mandibular prognathism. All patients included in this study were operated on by bilateral sagittal spliting ramus osteotomy according to Obwegeser and Dal Pont followed by mandibular immobilization during eight weeks. In all patients mandibular border movements were recorded before and six months after surgery using the computerized pantograph Arcus-Digma (KaVo EWL GmbH, Leutkirch, Germany). Results. The analysis of the chosen kinematic parameters revealed that sagittal split ramus osteotomy followed by eight weeks of mandibular immobilization had severe effects on the mouth opening. Six months after surgery the range of maximal mouth opening decreased for approximately 13.9 mm in relation to the preoperative stage. On the contrary, the ranges of maximal protrusion and the border of laterotrusive excursions increased significantly after surgery. Conclusion. In patients with mandibular prognathism where enormous mandibular growth was the main causal factor of the deformity, the sagittal split ramus osteotomy yielded good results. The rigid fixation of bone fragments and reduced period of mandibular immobilization followed by appropriate physical therapy could considerably contribute to a more rapid recovery of mandibular kinematics in the postoperative period.
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Losken, H. Wolfgang, Gary T. Patterson, Spiros A. Lazarou, and Timothy Whitney. "Planning Mandibular Distraction: Preliminary Report." Cleft Palate-Craniofacial Journal 32, no. 1 (January 1995): 71–76. http://dx.doi.org/10.1597/1545-1569_1995_032_0071_pmdpr_2.3.co_2.
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Normal lengths of the vertical ramus, body, and angle of the mandible at different ages are presented. Before mandibular distraction is embarked on, the extent of the deficiency of the mandible is assessed. The length of the vertical ramus and body are measured on cephalometric radiographs or three-dimensional computed tomography (3D CT) scans. Deficiency of the length of the mandible is calculated. The position of the pin placement angle (from the horizontal ramus) is calculated by means of the following formula: 180 degrees minus mandibular angle times vertical ramus deficiency divided by total deficiency. Placing the pins correctly will result in correction of the vertical ramus and body deficiency of the mandible and the excessively obtuse angle of the mandible will become more acute.
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Huang, Luo, Shan Tang, Jing Yan, Yaoran Liu, and Zhengguo Piao. "Three-dimensional analysis of mandible ramus morphology and transverse stability after intraoral vertical ramus osteotomy." Surgical and Radiologic Anatomy 44, no. 4 (March 18, 2022): 551–58. http://dx.doi.org/10.1007/s00276-022-02912-z.
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Abstract Objectives The purpose of this study was to investigate short- and long-term postoperative changes of both morphology and transverse stability in mandibular ramus after intraoral vertical ramus osteotomy (IVRO) in patients with jaw deformity using three-dimensional (3D) orthognathic surgery planning treatment software for measurement of distances and angles. Study design This retrospective study included consecutive patients with skeletal Class III malocclusion who had undergone intraoral vertical ramus osteotomy and computed tomography images before (T0), immediately after (T1), and 1 year after (T2) surgery. Reference points, reference lines and evaluation items were designated on the reconstructed 3D surface models to measure distances, angles and volume. The average values at T0, T1, T2 and time-dependent changes in variables were obtained. Results After surgery, the condylar length, ramal height, mandibular body length and mandibular ramus volume were significantly decreased (P < 0.01), while clinically insignificant change was observed from T1 to T2. The angular length was increased immediately after surgery (P < 0.05), but it was decreased 1 year after surgery (P < 0.05). Lateral ramal inclination showed significant increase after surgery (P < 0.05) and maintained at T2. Conclusion Changes in the morphology of the mandibular ramus caused by IVRO do not obviously bring negative effect on facial appearance. Furthermore, despite position and angle of mandibular ramus changed after IVRO, good transverse stability was observed postoperatively. Therefore, IVRO technique can be safely used without compromising esthetic results.
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Farias-Neto, Arcelino, Ana Paula Varela Brown Martins, Sidney Raimundo Figueroba, Francisco Carlos Groppo, Solange Maria de Almeida, and Célia Marisa Rizzatti-Barbosa. "Altered mandibular growth under functional posterior displacement in rats." Angle Orthodontist 82, no. 1 (July 25, 2011): 3–7. http://dx.doi.org/10.2319/040411-241.1.
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Abstract Objective: To test the null hypothesis that there is no difference in mandibular growth between growing rats with posterior functional mandibular displacement and growing rats without functional mandibular displacement. Materials and Methods: Twenty female Wistar rats (5 weeks old) were randomized into two groups: (1) control and (2) mandible posterior displacement in the occluded condition induced by an occlusal guiding appliance. After 8 weeks all animals were sacrificed, cone beam computed tomography scan images of the heads were taken using the classic I-CAT, and acrylic rapid-prototyped templates of the mandibles were constructed. Mandibular length, ramus height, and intercondylar distance were measured. Mandibular length and ramus height were submitted to the two-way analysis of variance, while intercondylar distance was analyzed by nonpaired Student's t-test. Results: Mandibular length was bigger (P < .0001) in the control than in the experimental group, but no significant difference was found between the left and right sides (P = .9380). No significant differences were observed for ramus height and intercondylar distance. Conclusions: The results of this study demonstrated that functional posterior displacement of the mandible in growing rats resulted in shorter mandibular length.
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Zarasade, Lobredia, Iswinarno Doso Saputro, and Nadia Tamara Putri. "Mandibular Condyle Fracture Management Outcome in Department of Plastic Reconstructive and Aesthetic Surgery, Dr. Soetomo Hospital on Period 2015- 2018." Jurnal Rekonstruksi dan Estetik 5, no. 1 (January 6, 2021): 35. http://dx.doi.org/10.20473/jre.v5i1.24323.
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Background : The high incidence of condyle mandible fractures is due to the role of the mandibular ramus which has stronger resistance compared to head condyle mandibular. The management of condyle fractures is still controversial because of the prognosis. Management of condyle fractures of the mandible should aim at maximally reducing morbidity, postoperative complications, and aesthetic and / or functional impairment.Methods: The medical records of 56 patients with condyle mandible fractures who presented at the Dr. Soetomo Hospital Surabaya from January 2015 to December 2018 were reviewed retrospectively. We analyzed characteristics of the patients (age), type of fractures, management of fractures, and outcome from management.Results : This study shows that a total of 56 patients, 22 were patients with mandibular condyle fractures only and 34 patients with mandibular condyle fractures with other maxillofacial fractures. The studied showed that male patients (84%) is more than female patients (16%). The mean age of the patients involved in this study was 28.25 ± 1.78 years, with the youngest being 12 years old and the oldest being 67 years old. The results of the overall study with good occlusion results in 48 patients, it was found that 22 patients were treated with closed reduction and 26 patients with open reduction were performed.Conclusions: The results of condyle mandibula fracture management in Dr. Soetomo Hospital has been according to the indication with the treatment indication along with the result of good management.
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Aires, Carolina Chaves Gama, Aída Juliane Ferreira Dos Santos, Eugênia Leal De Figueiredo, Belmiro Cavalcanti do Egito Vasconcelos, and Ricardo José de Holanda Vasconcellos. "Tratamento cirúrgico de fratura alta de ramo mandibular: relato de caso / Surgical treatment of high mandibular ramus fracture: a case report." Brazilian Journal of Development 7, no. 7 (July 26, 2021): 74112–21. http://dx.doi.org/10.34117/bjdv7n7-543.
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Kale, Tejraj Pundalik, SM Kotrashetti, Archana Louis, JB Lingaraj, and BU Sarvesh. "Mandibular Ramus Fractures: A Rarity." Journal of Contemporary Dental Practice 14, no. 1 (2013): 39–42. http://dx.doi.org/10.5005/jp-journals-10024-1266.
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ABSTRACT Aim To determine the incidence of mandibular ramus fractures in KLE's PK Hospital and to analyze the outcome of open reduction and internal fixation of these fractures. Materials and methods Using a retrospective study design, records of all trauma patients who reported to the Department of Oral and Maxillofacial Surgery, KLE's PK Hospital Belgaum, between the years January 2006 to October 2011 was obtained from the medical records office. The data variables that were analyzed were the name, age, sex, cause of injury, pretreatment occlusion, treatment given, period of MMF and post-treatment occlusion. Results Total number of mandibular fracture cases was 298. Ramus fractures were 10 in number which accounted for 3.3% of fractures. The age range of these 10 patients was seen to be between 20 to 80 years with the average age being 35.6 years. Of these 10 patients, 9 were male and 1 was female and 7 patients were treated by open reduction and internal fixation and the remaining 3 by closed reduction. The average period of MMF was 3 days for the patients who underwent open reduction and internal fixation. There was improvement in occlusion in all 10 patients post-treatment and there was no complication reported in any of the cases. Conclusion Ramus fractures accounted for 3.3% of all mandibular fractures. Open reduction and internal fixation of ramus fractures ensures adequate functional and anatomic reduction. Clinical significance This study makes an attempt to throw a light on the increasing incidence of ramus fractures and a successful management of these fractures by open reduction and internal fixation. How to cite this article Kale TP, Kotrashetti SM, Louis A, Lingaraj JB, Sarvesh BU. Mandibular Ramus Fractures: A Rarity. J Contemp Dent Pract 2013;14(1):39-42.
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Brener, D. "The mandibular ramus donor site." Australian Dental Journal 51, no. 2 (June 2006): 187–90. http://dx.doi.org/10.1111/j.1834-7819.2006.tb00425.x.
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Alimoğlu, Yalçn, Cihan Duman, Sahin Ogreden, Harun Cansiz, and Sergulen Dervisoglu. "Mandibular Ramus Epidermal Inclusion Cyst." Journal of Craniofacial Surgery 21, no. 5 (September 2010): 1647–49. http://dx.doi.org/10.1097/scs.0b013e3181ef6b3a.
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Lochbühler, Nina, Rotraud Katharina Saurenmann, Lukas Müller, and Christian Johannes Kellenberger. "Magnetic Resonance Imaging Assessment of Temporomandibular Joint Involvement and Mandibular Growth Following Corticosteroid Injection in Juvenile Idiopathic Arthritis." Journal of Rheumatology 42, no. 8 (June 1, 2015): 1514–22. http://dx.doi.org/10.3899/jrheum.141502.
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Objective.To assess whether intraarticular corticosteroid injection (CSI) reduces inflammation of the temporomandibular joint (TMJ), prevents growth disturbances of the mandibular condyle, and restores normal growth of the mandibular ramus.Methods.Retrospective longitudinal magnetic resonance imaging (MRI) evaluation of inflammatory activity, TMJ deformity, and mandibular ramus height in 33 children (23 girls, median age 5.2 yrs) over a median period of 5 years following repetitive CSI to the TMJ.Results.Intraarticular location of CSI led to inflammatory grade improvement in 53% at first MRI followup compared to 20% with extraarticular location (p = 0.005), with more improvement of the mean inflammatory grade after intraarticular CSI (p = 0.001). Rate of osseous deformities of the TMJ deteriorated from 51% at study inclusion to 62% at end of observation period, with progression to severe condylar destruction in 26% of joints including 24% with development of intraarticular calcifications/ossifications. Mean short-term growth rates of the mandibular ramus were negative for intraarticular CSI while positive for extraarticular CSI (p = 0.036). Mean longterm mandibular ramus growth rate (0.7 ± 0.8 mm/yr) after CSI was significantly lower than reported normal mean age- and sex-matched growth rate (1.4 ± 0.1 mm/yr, p < 0.0001).Conclusion.Despite improving the inflammatory activity as seen on MRI, repetitive CSI to the TMJ does not reach the treatment goals to prevent progressive osseous deformation and to normalize mandibular ramus growth in children with juvenile idiopathic arthritis.
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Lupi, Saturnino Marco, Jessica Landini, Giorgia Olivieri, Claudia Todaro, Andrea Scribante, and Ruggero Rodriguez y Baena. "Correlation between the Mandibular Lingula Position and Some Anatomical Landmarks in Cone Beam CT." Healthcare 9, no. 12 (December 17, 2021): 1747. http://dx.doi.org/10.3390/healthcare9121747.
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Background: the position of the mandibular lingula (Li) affects the success rate of the inferior alveolar nerve block (IANB) and ramus osteotomies. This study evaluated the position of the Li, to investigate the anatomical relationship between the Li and some anatomical measurements using cone beam computed tomography (CBCT). Methods: 201 hemimandibular CBCTs of 111 patients (43 males and 68 females; 18 to 88 years old) were retrospectively evaluated. The Li location was determined from the lingula tip to: the occlusal plane, the anterior and posterior borders of the mandibular ramus, the lower border of the mandible, the distal surface of the mandibular second molar, and the mandibular notch. We evaluated the correlations between the Li and the anteroposterior diameter of the mandibular ramus; the vertical distance between condyle and mandibular angle; the mesial–distal diameter of the first, second, and third mandibular molar, the intercanine distance, the intermolar distances among the first, second, and third mandibular molars; the distance between the intermolar line of the first molar and midline, and the length of the mandibular body. Results: the vertical distance of the Li from the occlusal plane was 11.22 ± 4.27 mm. Some parameters significantly correlated with the anatomical measurements taken into consideration. Conclusions: the present study provides new information concerning the Li and mandibular anatomy in the Italian population. Moreover, by correlating some anatomic measurements to the Li position, the localization of the Li is made possible, indirectly through the measurement of some distances between anatomical landmarks.
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Güngörmüş, M., AB Yilmaz, Ü. Ertaş, HM Akgül, MS Yavuz, and A. Harorli. "Evaluation of the Mandible as an Alternative Autogenous Bone Source for Oral and Maxillofacial Reconstruction." Journal of International Medical Research 30, no. 3 (June 2002): 260–64. http://dx.doi.org/10.1177/147323000203000306.
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The objective of this study was to quantify the amount of bone graft material present in the different regions of the mandible while avoiding the inferior alveolar neurovascular bundle, mental foramen and tooth injury. The study was carried out on 16 samples of dry, cadaverous skull. The dimensions of the anterior part of ascending ramus, mandibular symphysis and mandibular body in these samples were evaluated. The osteotomy lines in the anterior part of the ascending ramus were made in front of the mandibular canal from the mandibular notch to 3 mm posterior of the root of the third molar. The osteotomy line in the mandibular body was made just medial to the external oblique ridge from the ascending ramus to approximately 3 mm posterior to the mental foramen. Vertical osteotomy lines were then made from the cut ends of the first osteotomy down to the lower border of the mandible. The osteotomy lines in the mandibular symphysis were performed on the mandible with 5-mm safety margins caudal to the expected position of the mandibular dentition, anterior to the position of the mental foramen, and cephalad to the inferior border of the mandible. It was determined that the dimensions of the anterior part of the ascending ramus were 37.60 mm × 33.17 mm × 22.48 mm × 9.15 mm, and the thickest part of the graft material was 12.23 mm. The average horizontal length of the mandibular body bone was 35.10 mm, and the average vertical length was 19.13 mm. The dimensions of the bone graft obtained from the mandibular symphysis were 45.36 mm × 10.31 mm, and the average thickness was 9.63 mm. Based on the results of this study, it is apparent that the different regions of the mandible can reliably be selected as the harvest site in a variety of oral and maxillofacial reconstructive procedures.
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Abbasi, Amir Jalal, Abbas Azari, Simin Z. Mohebbi, and Arezoo Javani. "Mandibular Rami Implant: A New Approach in Mandibular Reconstruction." Journal of Oral and Maxillofacial Surgery 75, no. 12 (December 2017): 2550–58. http://dx.doi.org/10.1016/j.joms.2017.06.001.
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Chen, Han-Sheng, Szu-Yu Hsiao, and Kun-Tsung Lee. "Analysis of Facial Skeletal Morphology: Nasal Bone, Maxilla, and Mandible." BioMed Research International 2021 (May 24, 2021): 1–9. http://dx.doi.org/10.1155/2021/5599949.
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The growth and development of facial bones are closely related to each other. The present study investigated the differences in the nasomaxillary and mandibular morphology among different skeletal patterns. Cephalograms of 240 participants were divided into 3 groups based on the skeletal pattern (Class I, Class II, and Class III). The dimensions of nasomaxilla (nasal bone length, nasal ridge length, nasal depth, palatal length, and maxillary height) and mandible (condylar length, ramus length, body length, symphysis length, and entire mandibular length) were measured. One-way analysis of variance and Pearson’s correlation test were used for statistical analysis. No significant differences were observed among the skeletal patterns in terms of nasal bone length, palatal length, maxillary height, or condylar length. Class II had a significantly shorter ramus, mandibular body, and entire mandibular length compared with those of Class I and Class III. Nasal ridge length exhibited a significant moderate correlated with nasal bone length (correlation coefficient: 0.433) and maxillary height (correlation coefficient: 0.535). The entire mandibular length exhibited a significant moderate correlated with ramus length (correlation coefficient: 0.485) and body length (correlation coefficient: 0.536). In conclusion, nasal and maxillary dimensions exhibited no significant difference among the 3 skeletal patterns. Mandibular body and entire mandibular lengths were significantly positively correlations with Class III skeletal patterns.