Artykuły w czasopismach: „Mandibular prosthesis”

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Kalaignan, Parithimar, i Syed Ershad Ahmed. "Impact of mandibular resection guidance prostheses on oral health related quality of life (OHRQoL) - A prospective study". LIAQUAT MEDICAL RESEARCH JOURNAL 3, nr 3 (29.09.2021): 79–85. http://dx.doi.org/10.38106/lmrj.2021.3.3-06.

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This prospective study was aimed to measure the impact of mandibular resection guidance prostheses on oral health-related quality of life (OHRQol). A total of 35 patients with mandibulectomy defects were included. All the patients were rehabilitated with mandibular resection guidance prostheses respectively. These patients were subjected for assessment of OHRQol. The assessment was done by using OHIP-Edent-19 and a novel scale—maxillofacial prosthesis performance scale (MFPPS). The assessment was done on all the patients at two weeks and three months of prosthesis function. The scores of OHIP-Edent, and MFPPS for mandibular resection guidance prostheses after two weeks were 33.20and 18.74 respectively. The scores of OHIP-Edent and MFPPS for mandibular resection guidance prostheses prostheses at three months were 27.71and 15.20 respectively. These findings show significant improvements of prosthesis in terms of functional, physical, psychological and social parameters after long-term follow-up (3 months).

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B, Annapoorani, i Kasim Mohamed K. "Prosthetic management of a Hemi-mandibulectomy patient with Definitive Removable Prosthesis - A case report". JOURNAL OF CLINICAL PROSTHODONTICS AND IMPLANTOLOGY 3, nr 2 (30.12.2021): 42–45. http://dx.doi.org/10.55995/j-cpi.2021009.

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The loss of continuity of the lower jaw following surgical excision of tumor results in deviation of remaining mandibular segment toward the resected side. Swallowing, speech, mastication, and mandibular movements are adversely affected by mandibular surgery. Prosthetic rehabilitation plays a major role in these patients, by fabricating the whole array of prostheses to meet specific patient needs. This case report describes about the patient diagnosed with squamous cell carcinoma of alveolus on the left side. The patient had undergone hemimandibulectomy followed by soft tissue reconstruction. As a result, mandible deviated to the affected side with trismus due to scar contraction. Second surgery was planned to remove the scar tissue and to improve mouth opening. Few days following second surgery, guiding flange prosthesis was fabricated to reduce the deviation and to guide the mandible close to occlusion. After three months, a removable cast partial prosthesis was fabricated, for the defect side which was supported by a wing to compensate for lack of underlying structures. It is imperative to provide such patients with guiding flange prosthesis three to four weeks after surgical management to guide mandible to occlusion and minimize the mandibular deviation. Failure to do so will complicate the occlusion. Subsequently patient can be rehabilitated with removable prosthesis to restore the function

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Saleem, Mohammed, Rayeesa Saleem i Rufus Allwyn Meshack. "Prosthetic Management of Edentulous Mandible using Endosseous Implants and Overdentures". Journal of Contemporary Dental Practice 12, nr 2 (2011): 135–37. http://dx.doi.org/10.5005/jp-journals-10024-1023.

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ABSTRACT The choice of a suitable prosthesis for a specific case is determined to a great extent by the underlying residual bone as well as the mucosa. Also of significance are the expectations and demands of the patient from the prosthesis. The following case report discusses the rehabilitation of a complete edentulous mandibular arch with an implant retained mandibular over denture. Clinical Significance Implant retained fixed or removable prostheses are good treatment options in patients who have a compromised edentulous foundation. How to cite this article Saleem M, Saleem R, Meshack RA, Guru R. Prosthetic Management of Edentulous Mandible using Endosseous Implants and Overdentures. J Contemp Dent Pract 2011;12(2):135-137.

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Bacchiocchi, Danilo, i Andrea Guida. "The Ball Welding Bar: A New Solution for the Immediate Loading of Screw-Retained, Mandibular Fixed Full Arch Prostheses". International Journal of Dentistry 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/2679085.

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Purpose. To present a new intraoral welding technique, which can be used to manufacture screw-retained, mandibular fixed full-arch prostheses. Methods. Over a 4-year period, all patients with complete mandibular edentulism or irreparably compromised mandibular dentition, who will restore the masticatory function with a fixed mandibular prosthesis, were considered for inclusion in this study. The “Ball Welding Bar” (BWB) technique is characterised by smooth prosthetic cylinders, interconnected by means of titanium bars which are adjustable in terms of distance from ball terminals and are inserted in the rotating rings of the cylinders. All the components are welded and self-posing. Results. Forty-two patients (18 males; 24 females; mean age 64.2±6.7 years) were enrolled and 210 fixtures were inserted to support 42 mandibular screw-retained, fixed full-arch prostheses. After two years of loading, 2 fixtures were lost, for an implant survival rate of 97.7%. Five implants suffered from peri-implant mucositis and 3 implants for peri-implantitis. Three of the prostheses (3/42) required repair for fracture (7.1%): the prosthetic success was 92.9%. Conclusions. The BWB technique seems to represent a reliable technique for the fabrication of screw-retained mandibular fixed full-arch prostheses. This study was registered in the ISRCTN register with number ISRCTN71229338.

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Venezia, Pietro, Ferruccio Torsello, Vincenzo Santomauro, Vittorio Dibello i Raffaele Cavalcanti. "Full Digital Workflow for the Treatment of an Edentulous Patient with Guided Surgery, Immediate Loading and 3D-Printed Hybrid Prosthesis: The BARI Technique 2.0. A Case Report". International Journal of Environmental Research and Public Health 16, nr 24 (17.12.2019): 5160. http://dx.doi.org/10.3390/ijerph16245160.

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Purpose: To describe a technique intended to transfer of the intermaxillary and occlusal relationships in a fully digital environment from a complete denture to an implant-supported 3D-printed hybrid prosthesis (an acrylic resin complete fixed dental prosthesis supported by implants). Methods: In edentulous cases, the physiological mandibular position should be determined before the immediate loading procedures. In some cases, the use of interim removable prostheses for a few weeks could be useful to test the new occlusion in centric relation and to verify the prosthetic project. When the correct intermaxillary relationships are achieved, it is difficult to transfer them from the provisional to the final prostheses, as impressions or scans of edentulous arches do not have reference points for intermaxillary records. This paper presents a complex case and the technique used to transfer information from a complete denture to an implant-supported prosthesis with a digital workflow. A prosthetic stent has been used to scan the edentulous mandibular arch and to record the intermaxillary relation. Results: The delivery of the hybrid implant-supported prostheses was carried out with no problems and minimal occlusal adjustments. The patient was extremely satisfied with the treatment and the situation remained stable at the 1-year follow up. Conclusions: The approach described in the present article predictably maintains prosthetic information and allows the delivery of a final implant-supported restoration with the same occlusal relationship as the one tested with the provisional diagnostic dentures.

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Mai, Hai Yen, Jae-Min Seo, Jae-Kwang Jung i Du-Hyeong Lee. "Strategic Use of CAD-CAM Interim Restoration for the Recovery of the Vertical Dimension of Occlusion in the Posterior Partially Edentulous Jaw". Applied Sciences 10, nr 21 (31.10.2020): 7735. http://dx.doi.org/10.3390/app10217735.

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Occlusal contact loss occasionally occurs following the placement of implant-supported fixed dental prostheses in the posterior region. This complication is caused by the change in the vertical dimension of occlusion after the recovery of mastication. The change is probably related to the prosthesis sinking phenomenon and previous mandibular dislocation. The use of interim prostheses could help re-establish the vertical dimension of occlusion. The definitive prostheses can then be accurately fabricated using digital techniques in the newly established vertical dimension. In this case report, we introduce a protocol incorporating a computer-aided design and computer-aided manufacturing (CAD-CAM) interim prosthesis and digital techniques to minimize the occurrence of unexpected initial occlusal changes in the prosthetic treatment of implant-supported prostheses in the posterior region.

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Lazic, Vojkan, i Igor Djordjevic. "Prosthetic therapy of the lateral facial defect". Serbian Dental Journal 59, nr 3 (2012): 164–68. http://dx.doi.org/10.2298/sgs1203164l.

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Introduction. Facial defects may arise as a result of head and neck trauma or facial tumor ablation. Minor defects can be reconstructed surgically while large defects usually need combined surgical and prosthetic reconstruction. The aim of this study was to present the prosthetic reconstruction of the lateral facial defect using facial colored acrylic prosthesis. Case Report. A male patient with a maxillary defect on the left side and a large lateral facial defect on the same side received an obturator prosthesis as well as a facial colored acrylic prosthesis (facial-orbit) retained by the glasses frame. Satisfied aesthetics was accomplished. However, the stability of the prostheses during mandibular movements could not be achieved which resulted in saliva leakage over the lips. Conclusion. Better functional and aesthetic outcome could be achieved by combined surgical and prosthetic treatment of such large facial defect.

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Probst, Livia Fernandes, Tazio Vanni, Denise De Fátima Barros Cavalcante, Erica Tatiane da Silva, Yuri Wanderley Cavalcanti, Luis Augusto Passeri i Antonio Carlos Pereira. "Cost-effectiveness of implant-supported dental prosthesis compared to conventional dental prosthesis". Revista de Saúde Pública 53 (7.02.2019): 69. http://dx.doi.org/10.11606/s1518-8787.2019053001066.

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OBJECTIVE: To conduct a cost-effectiveness analysis of alternatives for rehabilitation treatment of mandibular edentulism in the context of the Brazilian Unified Health System (implantsupported total dental prosthesis versus conventional total dental prosthesis). METHODS: A Markov model was developed to capture long-term clinical and economic outcomes. The model’s population was comprised of a hypothetical cohort of 1,000,000 patients, aged 55 years, with total mandibular edentulism and without medical contraindications for performing surgical procedures. The adopted analysis perspective was that of the Brazilian Unified Health System. Based on the proposed model, we calculated cost – in BRL, and effectiveness – measured by quality-adjusted prosthesis year (QAPY). The time horizon of the analysis was 20 years. RESULTS: Considering a 5% discount in costs and effects, the incremental cost-effectiveness ratio of implant-supported total dental prostheses compared to conventional total dental prosthesis (BRL 464.22/QAPY) was lower than the willingness to pay threshold adopted in the model (BRL 3,050.00/QAPY). CONCLUSIONS: The results of this economic analysis showed that the rehabilitation of mandibular edentulous patients by implant-supported total prosthesis is very cost-effective when compared to conventional complete prosthesis, considering the cost-effectiveness limits employed.

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Bonnet, Anne Sophie, Marwan Daas, Michel Postaire i Paul Lipiński. "Numerical Simulations of the Global Behaviour of Implant Supported or Retained Dental Prostheses". Materials Science Forum 638-642 (styczeń 2010): 518–23. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.518.

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In spite of the recent efforts concerning prevention and treatment of dental diseases, total edentulism remains an important world health problem, even in industrialized countries. Different solutions to mandibular total edentulism are available from the classical removable denture to the implant supported prostheses. The aim of the present work is to compare, through finite element simulations, two distinct types of prosthetic solutions. The first one is an implant-supported prosthesis (ISP) using a “All-On-Four” base and the second one is a mandibular implant-retained overdenture (IRO) using two implants. A foodstuff situated on molar is modelled to simulate the mastication force. An orthotropic behaviour is assumed inside the symphyseal area. The results of the simulations show a strong influence of the prosthetic solution type on the stress and strain repartition in the implant and peri-implant bone. This can be explained by the difference of load transfer to bone between those two configurations. Indeed, in the implant-supported prosthesis, the totality of the mastication force is directly transmitted to peri-implant bone whereas the implant-retained solution benefits from a large participation of mucosa to the global load transfer from overdenture to bone.

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Niedzielska, Iwona, Michał Bąk, Damian Niedzielski, Hubert Okła, Jadwiga Gabor, Arkadiusz Stanula, Jarosław Paluch i Andrzej Szymon Swinarew. "Temporomandibular Joint Prostheses: Optimal Materials for the Optimal Stomatognathic System Performance—Preliminary Study". Journal of Functional Biomaterials 12, nr 1 (26.01.2021): 7. http://dx.doi.org/10.3390/jfb12010007.

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The aim of this study was to quantitatively evaluate alloplastic Temporomandibular Joint (TMJ) Prostheses against other treatment modalities regarding the jaw kinematics. Six patients with Temporomandibular Joint Prostheses, four with mandibular ramus Patient-Specific Implant (PSI) with condylar head preservation, and four after mandibular condylectomy were evaluated by the means of axiography (Cadiax Compact 2), which is the noninvasive three-dimensional study of condylar movements. The patients were also evaluated clinically for the mandibular movements. The study revealed that the significant movement limitations occurred bilaterally in patients fitted with TMJ prosthesis. For the protrusion movement, the vector length of the movement (L) for the TMJ prosthesis was 0.31 vs. 3.01 mm for the PSI (Kruskal–Wallis chi-squared = 9.1667, df = 2, p-value = 0.01022, post hoc Dunn p-value = 0.015) and for the laterotrusion to the operated side, the length of the vector (L) was 0.66 vs. 3.35 mm, respectively. Statistically significant differences between groups were most frequent for the laterotrusion to the unoperated side. The study shows that a further development on TMJ Prostheses geometry and materials is needed.

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Sverzut, Cassio Edvard, Alexandre Elias Trivellato, Alexander Tadeu Sverzut, Aníbal Henrique Barbosa Luna, Thiago Iafelice dos Santos i Cassio de Barros Pontes. "Rehabilitation of severely resorbed edentulous mandible using the modified visor osteotomy technique". Brazilian Dental Journal 20, nr 5 (2009): 419–23. http://dx.doi.org/10.1590/s0103-64402009000500011.

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The prosthetic rehabilitation of an atrophic mandible is usually unsatisfactory due to the lack of support tissues, mainly bone and keratinized mucosa for treatment with osseointegrated implants or even conventional prosthesis. The prosthetic instability leads to social and functional limitations and chronic physical trauma decreasing the patient's quality of life. A 53-year-old female patient sought care at our surgical service complaining of impairment of her masticatory function associated with the instability of the lower total prosthetic denture. The clinical and complementary exams revealed edentulism in both arches, while the mandibular arch presented severe reabsorption resulting in denture instability and chronic trauma to the oral mucosa. The proposed treatment plan consisted in the mandibular rehabilitation with osseointegrated implants and fixed Brånemark's protocol prosthesis after mandibular reconstruction applying the modified visor osteotomy technique. The proposed technique offered predictable results for reconstruction of the severely resorbed edentulous mandible and posterior rehabilitation with osseointegrated implants.

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Liu, Renshun, Yuxiong Su, Weifa Yang, Kai Wu, Ruxu Du i Yong Zhong. "A Novel Design Method of Gradient Porous Structure for Stabilized and Lightweight Mandibular Prosthesis". Bioengineering 9, nr 9 (30.08.2022): 424. http://dx.doi.org/10.3390/bioengineering9090424.

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Compared to conventional prostheses with homogenous structures, a stress-optimized functionally gradient prosthesis will better adapt to the host bone due to its mechanical and biological advantages. Therefore, this study aimed to investigate the damage resistance of four regular lattice scaffolds and proposed a new gradient algorithm for stabilized and lightweight mandibular prostheses. Scaffolds with four configurations (regular hexahedron, regular octahedron, rhombic dodecahedron, and body-centered cubic) having different porosities underwent finite element analysis to select an optimal unit cell. Meanwhile, a homogenization algorithm was used to control the maximum stress and increase the porosity of the scaffold by adjusting the strut diameters, thereby avoiding fatigue failure and material wastage. Additionally, the effectiveness of the algorithm was verified by compression tests. The results showed that the load transmission capacity of the scaffold was strongly correlated with both configuration and porosity. Scaffolds with regular hexahedron unit cells can withstand stronger loads at the same porosity. The optimized gradient scaffold showed higher porosity and lower maximum stress than the target stress value, and the compression tests also confirmed the simulation results. A mandibular prosthesis was established using a regular hexahedron unit cell, and the strut diameters were gradually changed according to the proposed algorithm and the simulation results. Compared with the initial homogeneous prosthesis, the optimized gradient prosthesis reduced the maximum stress by 24.48% and increased the porosity by 6.82%, providing a better solution for mandibular reconstruction.

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Huang, Sheng-Ni, Ming-You Shie, Yen-Wen Shen, Jui-Ting Hsu, Heng-Li Huang i Lih-Jyh Fuh. "Biomechanical Assessment of Design Parameters on a Self-Developed 3D-Printed Titanium-Alloy Reconstruction/Prosthetic Implant for Mandibular Segmental Osteotomy Defect". Metals 9, nr 5 (24.05.2019): 597. http://dx.doi.org/10.3390/met9050597.

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Patients with oral cancer often have to undergo the surgery for mandibular excision. Once the bone in the cancerous area is removed, not only the facial area but also chewing function of the patient is needed to be repaired by clinicians. In recent years, the rapid growth of three-dimensional (3D) metal printing technology has meant that higher-quality facial reconstructions are now possible, which could even restore chewing function. This study developed 3D-printed titanium (Ti)-alloy reconstruction implant for a prosthesis designed for mandibular segmental osteotomy defects, and 3D finite element (FE) analysis was conducted to evaluate its biomechanical performance. The analyzed parameters in the FE models were as follows: (1) two prosthesis designs, namely a prosthesis retaining the residual mandibular bone (for patients with mild oral cancer) and a prosthesis with complete mandibular resection (for patients with severe oral cancer); (2) two lengths of prosthesis, namely 20 and 25 mm; and (3) three thicknesses of prosthesis, namely 0.8, 1, and 1.5 mm. A 45° lateral bite force (100 N) was applied to the top of the prosthesis as the loading condition. The results revealed that for the two prosthesis designs, the prosthesis retaining the residual mandibular bone showed higher stress on the prosthesis and cortical bone compared with the prosthesis with complete mandibular resection. Regarding the two prosthesis lengths, no fixed trend of prosthesis stress was found, but stress in the cortical bone was relatively high for a prosthesis length of 20 mm compared with that of 25 mm. For the three prosthesis thicknesses, as the thickness of the prosthesis decreased, the stress in the prosthesis decreased but the stress in the cortical bone increased. These findings require confirmation in future clinical investigations.

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Moraes, Nathalia, Eduardo Moraes, Tiago Anastacio, Licínio Silva, Aldir Machado, José Schoichet, Raphael Monte Alto i in. "Active Tactile Sensibility of Brånemark Protocol Prostheses: A Case–Control Clinical Study". Materials 14, nr 16 (18.08.2021): 4644. http://dx.doi.org/10.3390/ma14164644.

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Few studies have assessed active tactile sensibility in patients rehabilitated with implants. Improved knowledge about functional tactile sensibility will contribute to several clinical applications, such as protocols for immediate loading, prosthesis design, occlusal improvement in implantology, and physiological integration of implant-supported prostheses. The present study evaluated active tactile sensibility in patients rehabilitated with Brånemark-type mandibular prostheses that impede the total mucosa-supported maxillary prosthesis. Thirty-five subjects participated in this study. The experimental group (n = 18) inclusion criteria were as follows: Brånemark-type prosthesis and a total mucosa-supported maxillary prosthesis. The control group (n = 17) was composed of participants with complete healthy dentition. Carbon foils with different thicknesses (12 μm, 24 μm, 40 μm, 80 μm, and 200 μm) were placed in the premolar region to evaluate the brink of active oral tactile sensibility. The researchers assessed the participants 120 times. After evaluation, we observed a statistical difference (p < 0.05) between the groups. Additionally, the degree of sensibility was found for all thicknesses, except for 12 μm, on both sides. There was a more significant increase in perception in the control group as the carbon thickness increased. The tactile sensibility threshold was 2.5 times greater for participants with prostheses. Thus, the tactile sensibility for mandibular implant-supported and maxillary mucosa-supported prostheses is significantly lower than that of dentate patients, which was detected above the thickness of 80 μm; in patients with natural dentition, different thicknesses were seen starting from 24 μm.

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Samran, Abdulaziz, Mohammad Zakaria Nassani, Marwan Aswad i Amid Abdulkarim. "A Modified Design for Posterior Inlay-Retained Fixed Dental Prosthesis". Case Reports in Dentistry 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/576820.

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The aim of this paper is to report a clinical case with bilateral missing mandibular second premolars that were restored by metal-ceramic inlay-retained fixed dental prostheses. The first prosthesis was of a traditional design and the second was of a modified design. The suggested design is created by modifying the retainer wings of the traditional resin-bonded inlay-retained fixed dental prosthesis and covering the wings with composite resin. The modified design is relatively conservative, esthetic and provides an extra element for the retention of posterior metal-ceramic inlay-retained fixed dental prostheses.

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Londono, J., P. S. Baker i D. S. Pannu. "Stepwise Technique for Developing a Successful Prosthodontic Design for a Geriatric Mandibular Resection Patient". International Journal of Medical and Dental Sciences 2, nr 2 (1.07.2013): 201. http://dx.doi.org/10.19056/ijmdsjssmes/2013/v2i2/86786.

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This report describes the continued treatment of a geriatric patient with a mandibular lateral discontinuity defect and existing mandibular implantretained removable complete prosthesis opposing a maxillary complete denture. The purpose is to present a method of addressing patient concerns about existing esthetics and function using provisional restorations that permit gradual alterations to confirm operator and patient approval prior to fabrication of definitive prostheses. This technique allows the dentist to better accommodate the loss of dexterity, decreased adaptability, and other problems often complicating design of dental prostheses for aging patients.

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Kaur, Mandeep, Sakshi M. Kaura, Amit Sharma i Simarpreet Kaur. "Interim Prosthesis for Repositioning of Mandible in a Hemimandibulectomy Patient: A Case Report". European Journal of Medical and Health Sciences 3, nr 2 (24.04.2021): 42–45. http://dx.doi.org/10.24018/ejmed.2021.3.2.801.

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Background: Squamous cell carcinoma is prevalent in middle asia due to prevalence of tobacco chewing. Management includes removal of mandibular bone along with adjacent muscles and nerves. Mandible is attached to cranium with the support of muscles. Removal of muscles results in deviation of mandible and loss of occlusion, which is necessary for functions such as chewing, swallowing and to some extent in speech. Prosthetic appliances help in restoration of position of mandible and thus restoring the function. Case Report: This is a case of 58 year old male with hemimandibulectomy due to moderately differentiated squamous cell carcinoma. Treatment Plan: Interim guiding prosthesis was planned for mandibular repositioning as the patient did not report before the surgical excision. Conclusion: a definitive management would be undertaken by using cast partial dentures after mandibular repositioning with interim prosthesis is done.

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Geckili, Onur, Hakan Bilhan, Gulsum Ceylan i Altug Cilingir. "Edentulous Maxillary Arch Fixed Implant Rehabilitation Using a Hybrid Prosthesis Made of Micro-Ceramic-Composite: Case Report". Journal of Oral Implantology 39, nr 1 (1.02.2013): 115–20. http://dx.doi.org/10.1563/aaid-joi-d-10-00040.

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The prosthetic treatment of patients with an edentulous maxilla opposing mandibular natural teeth is one of the most challenging endeavors that face clinicians. Occlusal forces from the opposing natural teeth may cause fractures in the maxillary prosthesis and also result in advanced bone loss of the edentulous maxilla. With the presence of extreme gagging reflex, the treatment may become more complicated. This article describes and illustrates the 2-stage surgical and prosthetic treatment of a patient with an edentulous maxilla opposing natural teeth. In the beginning, the patient was treated with 4 implants and a maxillary implant-supported overdenture. The extreme gagging reflex and the occlusal forces from the mandibular natural teeth obligated the team a second stage surgical and prosthetic treatment, which included increasing the number of implants after bilateral sinus lifting in the posterior maxilla and fabricating a maxillary fixed hybrid prosthesis made of micro-ceramic composite that yielded a satisfactory result.

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Geramipanah, Farideh, Saman Fallahi Sichani, Susan Mirmohammadrezaei i Safoura Ghodsi. "Practical guidelines for fabricating mandibular guide flange prostheses: A new technique for measuring the flange angulation". Prosthetics and Orthotics International 40, nr 4 (11.03.2015): 528–31. http://dx.doi.org/10.1177/0309364615574160.

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Background and aim: When a mandibulectomy causes discontinuity, the patient will need a rehabilitative prosthesis to achieve a proper occlusal relationship. Technique: This article describes step-by-step guidelines for measuring the patient-specific mandibular guide flange angulation. In the presented technique, the flange angulation is determined by dividing the horizontal overlap of the maxillary posterior teeth plus the maxillary buccal clasp thickness by the vertical distance of the mandibular continuous clasp up to the maxillary buccal clasp. Discussion: The mandibular guiding flange prosthesis must achieve an angulation that is appropriate for the particular circumstances of each patient to minimize the complications with mandibular deviation. Clinical relevance The introduced method for measuring the patient-specific mandibular guide flange angulation can help prosthodontists to prepare the mandibular guiding flange prosthesis with higher accuracy and predictability.

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Sanyal, Pronob, Sulekha Gosavi, Siddharth Gosavi, Abhijeet R. Kore, Shobha Kore i Shivsagar Tewari. "Mandibular Loop Connector: An Underrated Treatment Modality". World Journal of Dentistry 6, nr 3 (2015): 184–87. http://dx.doi.org/10.5005/jp-journals-10015-1339.

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ABSTRACT Connectors are the components of fixed dental prosthesis that join the individual retainers and pontics together. Connectors may be rigid or nonrigid. Loop connector is a type of rigid connector, indicated primarily when an existing diastema is to be maintained in a planned fixed prosthesis. Such cases can be treated with an implant supported prosthesis or a fixed prosthesis using a loop connector. In case of loop connector, the connector is in the form of a loop on the lingual aspect of the prosthesis that connects the adjacent retainer and pontic. Similarly, loop connector can also be used in the mandibular anterior region for replacement of central incisors, using canines as abutments rather than mandibular laterals which usually have compromised bone support. There are many reports in literature describing the use of a loop connector in the maxillary anterior sextant. But, there are seldom reports about the use of a loop connector in the mandibular anterior region. This case report describes the use of a mandibular loop connector for the replacement of mandibular teeth where the adjacent teeth are periodontally compromised. How to cite this article Kore AR, Kore S, Gosavi S, Tewari S, Gosavi S, Sanyal P. Mandibular Loop Connector: An Underrated Treatment Modality. World J Dent 2015;6(3):184-187.

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Renato, Jordao Claudio, Magaldi Felipe Jorge, Alexandre Leonardo Pereira i William César Caldas. "Fixed jaw overdenture with three implants using equator type components - Clinical case report". International Journal of Dentistry Research 4, nr 3 (25.12.2019): 94–96. http://dx.doi.org/10.31254/dentistry.2019.4301.

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Mandibular overdenture dentures retained by two implants are viable options for oral rehabilitation of elderly patients. Different types of implant components are used for retention of these prostheses in the mouth, with the ball component being the most used. The aim of this study is to present a small variation of the conventional two-implant technique using the ball-type component by adding an implant and also replacing the component with a locator type (Neodent) for retention of the mandibular prosthesis.

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Kalaignan, Parithimar, i Jaya Shree Mohan. "Oral Health Related Quality Of Life with Mandibular Resection Prosthesis". Biomedical and Pharmacology Journal 11, nr 3 (4.09.2018): 1423–28. http://dx.doi.org/10.13005/bpj/1506.

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Cancers of the orofacial region can be devastating in their impact on physical structure and function of the affected individual, leading to potentially severe compromises in quality of life. A total of Twenty (20) mandibular resected patients were selected for this study. All the patients’ were rehabilitated with mandibular resection prosthesis. Novel scale known as Maxillofacial Prosthesis Performance Scale (MFPPS) was developed for mandibulectomy patients to assess the oral health related quality of life. This scale has been tested for validity and reliability. The OHRQol was measured using the oral health impact profile (OHIP-Edent-19), Obturator functioning scale (OFS-15) and Maxillofacial Prosthesis Performance Scale (MFPPS-10) with standardized questionnaire after 2 weeks & 3months of prosthesis function for twenty (20) mandibular resected patients. For OHIP –Edent scale; when comparing 2 weeks, all subscale scores shown significant progress on oral health impact profile-Edent scale after 3 months of prosthesis function. For OFS scale; when observing the score of 2 weeks and 3 months, there was dramatic improvement of (75%) in miscellaneous factors which include Problems in dryness of mouth, engagement in social events and obturator positioning. For MFPPS; all rehabilitated patients’ were observed two weeks later, negative impacts have been eliminated and positive impacts increased on oral health. The patient was reviewed again 3months later and confirming an even higher level of overall satisfaction with the Mandibular Resection Prosthesis. The maxillofacial prosthesis had a strong positive impact on quality of life .Hence mandibular resection prosthesis enhance the oral health related quality of life.

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Dzambas, Ljubisa, i Asen Dzolev. "Surgical-prosthetic treatment of large mandibular cysts". Vojnosanitetski pregled 60, nr 3 (2003): 365–68. http://dx.doi.org/10.2298/vsp0303365d.

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This paper presents a combined surgical-prosthetic procedure of reconstructing mandibular bone defect in a 53 year old patient, following enucleation of a mandibular cyst (Cystectomy Partsch II). After a thorough diagnostic evaluation, a surgical procedure was planned with the particular attention to the nature of the disease, patient?s condition, size and extension of the cyst, tissue loss, and the possibilities of prosthetic management of a mandibular bone defect with partial postresection dental prosthesis. It is of great importance to point to the significance of teamwork of a maxillofacial surgeon and a specialist in prosthodontics. This kind of cooperation provided very effective and less risky soft tissue, as well as bone tissue regeneration (osteogenesis). The patient?s recovery was fast, and he could return to his daily activities and work without significant changes regarding quality of life after surgery and prosthetic treatment.

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Heydecke, G., D. H. McFarland, J. S. Feine i J. P. Lund. "Speech with Maxillary Implant Prostheses: Ratings of Articulation". Journal of Dental Research 83, nr 3 (marzec 2004): 236–40. http://dx.doi.org/10.1177/154405910408300310.

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Speech is often perturbed after placement of maxillary implant-retained prostheses. We tested the hypothesis that the rate of speech errors varies with prosthetic design. Thirty edentulous subjects with mandibular implant prostheses entered two within-subject crossover trials. Subjects wore maxillary fixed prostheses and removable long-bar overdentures (Trial 1), or overdentures with and without palates (Trial 2). Test words from a French language speech battery were recorded after each prosthesis had been worn for two months. The percentages of stops, fricatives, and vowels correctly perceived by lay judges were calculated. Subjects produced a significantly higher percentage of sounds correctly with overdentures than with fixed prostheses. Between-treatment differences were significant for stops and fricatives (p < 0.01), but not for vowels. There were no significant differences in error rates between the two overdentures. In conclusion, maxillary implant overdentures with and without palates enable patients to produce more intelligible speech than fixed prostheses.

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Marin, Danny Omar Mendoza, Kássia de Carvalho Dias, André Gustavo Paleari, Ana Carolina Pero, João Neudenir Arioli Filho i Marco Antonio Compagnoni. "Split-Framework in Mandibular Implant-Supported Prosthesis". Case Reports in Dentistry 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/502394.

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During oral rehabilitation of an edentulous patient with an implant-supported prosthesis, mandibular flexure must be considered an important biomechanical factor when planning the metal framework design, especially if implants are installed posterior to the interforaminal region. When an edentulous mandible is restored with a fixed implant-supported prosthesis connected by a fixed full-arch framework, mandibular flexure may cause needless stress in the overall restorative system and lead to screw loosening, poor fit of prosthesis, loss of the posterior implant, and patient’s discomfort due to deformation properties of the mandible during functional movements. The use of a split-framework could decrease the stress with a precise and passive fit on the implants and restore a more natural functional condition of the mandible, helping in the longevity of the prosthesis. Therefore, the present clinical report describes the oral rehabilitation of an edentulous patient by a mandibular fixed implant-supported prosthesis with a split-framework to compensate for mandibular flexure.Clinical Significance.The present clinical report shows that the use of a split-framework reduced the risk of loss of the posterior implants or screws loosening with acceptable patient comfort over the period of a year. The split-framework might have compensated for the mandibular flexure during functional activities.

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Awchat, Kiran, Parag Dua, I. D. Roy i Deepa Vinod Bhat. "Comprehensive management of mutilated dentition with fixed mandibular implant prosthesis and maxillary overdenture- A 6 year follow-up case report". IP Annals of Prosthodontics and Restorative Dentistry 8, nr 3 (15.09.2022): 161–64. http://dx.doi.org/10.18231/j.aprd.2022.032.

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Rehabilitation of mutilated dentition is esthetic and functional challenge. The present condition of dentition, patient’s level of motivation for maintaining oral hygiene, social status etc are the key factors to successful rehabilitation. Maxillary teeth supported overdenture against mandibular complete denture is a potential risk for enhancing residual ridge resorption of mandibular arch. In such situation mandibular implant prosthesis is a better treatment option. In this case report a comprehensive management of patient with mutilated dentition has been carried out in phased manner.Here three roots with healthy periodontium were preserved in maxillary arch. Fixed implant prosthesis was made in mandibular arch. Presently patient has been followed up for 6 years and found to be highly satisfied and having a good oral hygiene. Maxillary overdenture against mandibular fixed implant prosthesis should be considered as effective rehabilitative modality in rehabilitating such cases.

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Nischal, K., i R. Chowdhary. "Early Loaded Single Implant Reinforced Mandibular Overdenture". Case Reports in Dentistry 2016 (2016): 1–4. http://dx.doi.org/10.1155/2016/4213753.

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Rehabilitating atrophied mandible with two-implant supported denture is a common treatment modality for implant retained removable overdenture in mandible. This paper aims to design a treatment modality where single implant reinforced overdenture is fabricated for a severely atrophied mandibular ridge with early loading protocol. Results of studies have shown that a single implant mandibular overdenture significantly increases the satisfaction and quality of life of patients with edentulism. Midline fracture of the prosthesis is the most common complication related to single implant and two-implant retained mandibular overdentures. To manage such complication, a thin metal mesh is used to reinforce the overdenture and also to make the prostheses lighter and cost effective as compared to conventional cast metal framework.

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PADURARU, Marius Ionut, Diana PADURARU, Teodora ALEXA-STRATULAT, Anca NEAGU, Marius NEAGU, Vlad AFRASANIE, Lucian MIRON, Alexandru Bogdan CIUBARA, Magda ANTOHI i Anamaria CIUBARA. "Anxiety and Fear in Cancer Patients". BRAIN. Broad Research in Artificial Intelligence and Neuroscience 11, nr 3sup1 (2020): 197–206. http://dx.doi.org/10.18662/brain/11.3sup1/136.

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This article describes rehabilitation of one case, complex psychiatric treatment, facial asimetry, with mandibular and maxilla missing teeth and dental disharmony, with a fixed and also removable hybrid prosthesis.Rehabilitation with fixed or removable prosthesis is even more challenging when the edentulous span is long and the ridge is irregular deformities and unfavorable biomechanics encountered at the prosthetic field for complex rehabilitation. In such situation, a fixed-removable prosthesis allows favorable biomechanical stress distribution along with restoration of esthetics, phonetics, comfort, hygiene, and better postoperative care and maintenance.

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CHECHERITA, Laura Elisabeta, Lucian Ștefan BURLEA, Liana AMINOV, Raluca Elena BACIU, Bogdan Petru BULANCEA, Ioana RUDNIC, Iulian Costin LUPU i Ovidiu STAMATIN. "Oral Rehabilitation Therapies in a Patient with Facial Dysmorphia and Psychiatric Profile - Clinical Case Report". BRAIN. Broad Research in Artificial Intelligence and Neuroscience 11, nr 3sup1 (2020): 207–19. http://dx.doi.org/10.18662/brain/11.3sup1/137.

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This article describes rehabilitation of one case, complex psychiatric treatment, facial asimetry, with mandibular and maxilla missing teeth and dental disharmony, with a fixed and also removable hybrid prosthesis.Rehabilitation with fixed or removable prosthesis is even more challenging when the edentulous span is long and the ridge is irregular deformities and unfavorable biomechanics encountered at the prosthetic field for complex rehabilitation. In such situation, a fixed-removable prosthesis allows favorable biomechanical stress distribution along with restoration of esthetics, phonetics, comfort, hygiene, and better postoperative care and maintenance.

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Mariette Rakotoson, Nicko Sergio Rabarijaona, Tojomamy Herinjaka Ralaizafindraibe, Florian Adèlis Andriniaina, Tahina Ratsirarisoa, Ndimby Nomenjanahary Andrinjakarivony, Marie Olga Rasoanirina, Patrick Maholisoa Randrianandraina i Henri Martial Randrianarimanarivo. "Obstructive Sleep Apnea Syndrome (OSAS) management in Dento-Facial Orthopedic". Magna Scientia Advanced Research and Reviews 7, nr 1 (28.02.2023): 035–41. http://dx.doi.org/10.30574/msarr.2023.7.1.0023.

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Introduction: Obstructive Syndrom Apnea (OSA) has a worldwide incidence of 0.3 to 5%, predominantly in men. This pathology causes an obstruction of the upper airway with a significant risk of asphyxia and sudden death. The objective of our study was to report the case of a patient with OSA treated in Dento-Facial Orthopedics. Observation: This was a 41-year-old man with risk factors for OSA, dento-arch dysmorphosis, and maxillo-mandibular bone deformity. The nasofibroscopy revealed a narrowed oropharynx, an airway obstruction in the supine position. The polysomnography concluded to the diagnosis of OSA in its severe form with 45 apneas in one night, an oxygen saturation of 85%. The treatment consisted of a mandibular advancement prosthesis. Discussion: OSA is a serious pathology under-diagnosed in Madagascar. Repeated apneas and hypopneas are associated with significant decreases in oxygen partial pressure. The most reliable and widely used test in the world is polysomnography. Treatment of OSA with positive pressure allows the increase of the pressure inside the pharynx. Mandibular advancement prostheses allow for promandibulia. These therapeutic devices improve the quality of life of our patient. By traction system, the device allows a mandibular protrusion during sleep. Conclusion: The treatment of OSA consists of a multidisciplinary management including Dento-Facial Orthopedics and dental prosthesis.

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Pantaleo, Giuseppe, Alfonso Acerra, Francesco Giordano, Francesco D’Ambrosio, Michele Langone i Mario Caggiano. "Immediate Loading of Fixed Prostheses in Fully Edentulous Jaws: A 7-Year Follow-Up from a Single-Cohort Retrospective Study". Applied Sciences 12, nr 23 (5.12.2022): 12427. http://dx.doi.org/10.3390/app122312427.

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The aim of this retrospective single-cohort study was to evaluate the clinical outcome of four-to-five implants immediately restored with metal-resin screw-retained cross-arch fixed prostheses in edentulous jaws 10 years after loading. One-hundred-and-four consecutive patients received four to five implants placed with a torque superior 35 Ncm. One-hundred-and-twenty-seven metal-resin screw-retained fixed prostheses (59 mandibular and 68 maxillary) were to be delivered within 3 days. Outcome measures, evaluated by the treating clinician, were: prosthesis and implant failures, prosthetic modifications, peri-implant mucositis, and biological and prosthetic complications. A total of 549 implants were placed. Twenty-one implants failed in 14 patients and 102 prostheses were remade, at least once, in 81 patients: 2 due to implant failures and 33 because of fractures of the prostheses. In particular, 25 original metal-resin prostheses had to be remade because of fractures versus only eight of the replacement monolithic metal-resin prostheses. All patients were wearing fixed prostheses at the end of the follow-up. Thirty-six biological complications occurred in 22 patients. Eighty-six prosthetic complications occurred in 42 patients. In conclusion, immediately loaded cross-arch prostheses supported by four-to-five immediately placed implants are a viable therapeutic option if robust prostheses are made.

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Kadioglu, Merve N., Mehmet Fatih Senturk, Aysegül Mine Tuzuner Oncul i Mine Cambazoglu. "Repositioning of the Mental Nerve in Case of Severe Mandibular Atrophy: A Case Series". International Journal of Experimental Dental Science 3, nr 1 (2014): 41–43. http://dx.doi.org/10.5005/jp-journals-10029-1067.

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ABSTRACT Following tooth extraction, cortical bone suffers greater resorption on the vestibular area and patients typically present narrow and low alveolar crests. In case of moderate to severe mandibular atrophy; the bone height between alveolar crest and mental nerve is too narrow and patients may feel pain under pressure. Repositioning of the mental nerve is an effective preprosthetic surgery procedure in patients with hyperesthesia caused by dental prosthesis. As well as this surgical repositioning of the mental nerve facilitates the placement of implants can prevent pain, in overdenture prosthesis and fixed dentures. In this report, mental nerve repositioning, implant placement in the interforaminal region of the mandible and prosthetic rehabilitation of two cases with hyperesthesia due to severe mandibular atrophy is presented. Nerve repositioning may constitute a treatment alternative in patients with a consequent risk of mental nerve damage during the placement of dental implants. How to cite this article Kadioglu MN, Senturk MF, Oncul AMT, Cambazoglu M. Repositioning of the Mental Nerve in Case of Severe Mandibular Atrophy: A Case Series. Int J Experiment Dent Sci 2014;3(1):41-43.

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Feine, J. S., P. de Grandmont, P. Boudrias, N. Brien, C. LaMarche, R. Taché i J. P. Lund. "Within-subject Comparisons of Implant-supported Mandibular Prostheses: Choice of Prosthesis". Journal of Dental Research 73, nr 5 (maj 1994): 1105–11. http://dx.doi.org/10.1177/00220345940730051301.

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Lenganey, Hugues, Simon Rasteau, Harmik Minassian, Gregory Murcier, Robin Jouan i Florent Borgnat. "Mandibular propulsion and dental implant rehabilitation for an edentulous patient with class II malocclusion and severe obstructive sleep apnea". Journal of Oral Medicine and Oral Surgery 27, nr 2 (2021): 27. http://dx.doi.org/10.1051/mbcb/2020057.

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Introduction: Orthognathic surgery can be a treatment for occlusal, oro-facial functional disorders and esthetics discrepancies as well as for obstructive sleep apnea. It is often practiced after an orthodontic preparation, but in edentulous patients, the preparation can be replaced with implant supported prosthesis to simulate the final occlusion. Observation: A patient presenting severe obstructive sleep apnea, vertical and sagittal insufficiency of the lower third of the face and poor dental health was treated with a guided mandibular advancement and an almost complete implant supported prosthesis rehabilitation. At first, the implants were placed and immediately loaded, giving the patient a class 2 occlusion. Then, an orthognathic surgery was performed, giving the patient a class 1 occlusion, and then the final prosthesis was made. Commentaries: The interest of this case is the combined treatment of the obstructive sleep apnea, the dental and facial deformities by mandibular retrognathia and the edentulous jaws. The gold standard for obstructive sleep apnea is a maxillary and mandibular advancement. In this case, for esthetic and anatomic reasons, a mandible propulsion alone has been performed, showing a positive and stable result for the treatment of obstructive sleep apnea. The use of surgical guide permitted to plan the treatment with more accuracy. Conclusion: This case combines a fixed prosthetic rehabilitation, which permitted to guide the orthognathic surgery and the treatment of obstructive sleep apnea.

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Khatami, Amir H., Joseph A. Toljanic i Alejandro Kleinman. "Mandibular Reconstruction With Vascularized Fibula Flap and Osseointegrated Implants: A Clinical Report". Journal of Oral Implantology 36, nr 5 (1.10.2010): 385–90. http://dx.doi.org/10.1563/aaid-joi-d-09-00066.

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Abstract Primary and secondary reconstruction of mandibular discontinuity defects with vascularized flap is currently the standard of care in many institutions. The most commonly used donor site for such flaps is fibula. Fibula provides enough bone length, allows 2-team approach, and has low donor site morbidity and abundant periosteal blood supply. The placement of endosseous implants in the vascularized fibula flap also facilitates functional dental rehabilitation. This clinical report describes the prosthetic rehabilitation and the complications of 2 mandibular discontinuity defects treated with vascularized fibula flap and implant-supported fixed prosthesis.

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Marian Anand Bennis i Deepak Nallaswamy V. "Full mouth rehabilitation with maxillary equator® attachment over denture and mandibular hybrid denture - A case report". International Journal of Research in Pharmaceutical Sciences 12, nr 1 (13.01.2021): 388–91. http://dx.doi.org/10.26452/ijrps.v12i1.4165.

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Implant-supported prosthodontic rehabilitation of total edentulism remains the most complex restorative challenges. The main reason being the number of variables that aﬀect both the aesthetic and functional aspects of the prosthesis. A hybrid denture or the ‘Toronto prosthesis’ is one that is fabricated over a metal framework and retained by screws threaded into implants. This article presents the fabrication of implant-retained maxillary Equator® attachment overdenture opposing mandibular implant-retained hybrid prosthesis. A total of four implants (Equinox® Myriad plus) were placed the maxillary arch and six implants (Equinox® Myriad plus) in the mandibular arch. The patient's occlusal vertical dimension, centric relation, aesthetics and phonetics were determined and maintained throughout the restorative process. This case report describes the management of a completely edentulous patient with a mandibular implant-supported fixed prosthesis and maxillary implant-retained overdenture with Equator® attachment.

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Flanagan, Dennis. "Complete Artificial Dentition Supported by Endosseous Implants: A Case Report of Total In-office Treatment". Journal of Oral Implantology 31, nr 2 (1.04.2005): 91–97. http://dx.doi.org/10.1563/0-726.1.

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Abstract This case report demonstrates the construction of a complete restoration of the dentition by the surgical placement of endosseous titanium implants that support a fixed prosthesis in each jaw. The positioning of the implants and teeth in the prostheses are important factors for a successful long-term result. Distribution of the occlusal biting forces over as many implants as possible is important. Off-axial occlusal biting forces should be diverted to the anterior prostheses, where the forces are not as great and the posterior teeth are designed with flat occlusal surfaces that separate during excursionary chewing movements. Medial mandibular flexure caused by the contraction of the medial pterygoid muscle can be addressed by constructing the prosthesis in segments. This is so as not to have a rigid entity encased in flexing bone that may induce stress to the bone, leading to loss of implant integration and failure. Segmenting also insures an appropriate fit of the prosthesis with respect to casting and porcelain firing distortion. Lip support by means of a flange in the prosthesis may be necessary when there has been a large amount of bone loss from edentulous resorption. Cleaning and maintenance of the prostheses every 3 to 6 months is essential.

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Jain, Himani, Tarun Kalra, Manjit Kumar, Ajay Bansal i Deepti Jain. "Three-Dimensional Finite Element Analysis to Evaluate Stress Distribution in Tooth and Implant-Supported Fixed Partial Denture–An In Vitro Study". Dental Journal of Advance Studies 8, nr 03 (5.08.2020): 084–91. http://dx.doi.org/10.1055/s-0040-1714331.

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Abstract Introduction This study was undertaken to assess the influence of different superstructure materials, when subjected to occlusal loading, on the pattern of stress distribution in tooth-supported, implant-supported, and tooth implant-supported fixed partial prostheses, using the finite element analysis with a comparative viewpoint. Materials and Methods The geometric models of implant and mandibular bone were generated. Three models were created in accordance with the need of the study. The first model was given a tooth-supported fixed partial prosthesis. The second model was given tooth implant-supported fixed partial prosthesis, and the third model was given implant-supported fixed partial prosthesis. Forces of 100 N and 50 N were applied axially and buccolingually, respectively. Results The present study compared the stresses arising in the natural tooth, implant, and the whole prostheses under simulated axial and buccolingual loading of three types of fixed partial dentures, namely, tooth-supported, tooth implant-supported, and implant-supported fixed partial dental prostheses using three different types of materials. Conclusion The pattern of stress distribution did not appear to be significantly affected by the type of prosthesis materials in all models. The maximum stress concentrations were found in the alveolar bone around the neck of the teeth and implants.

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Shetty, Mallika S., Sanath Kumar Shetty, Suhaim Sayyed Karkala, Zahid Mohammed i Tushar Milind Wankhede. "Prosthetic Management of a Posterior Ridge Defect Case with Fixed Removable Type of Hybrid Prosthesis - A Case Report". Journal of Evolution of Medical and Dental Sciences 10, nr 36 (6.09.2021): 3192–95. http://dx.doi.org/10.14260/jemds/2021/648.

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The main aim of prosthetic dentistry is restoring the form, function, comfort and appearance of the patient by the placement of a prosthesis replacing the missing teeth and contiguous tissues.1 Various prosthetic options for partially edentulous patients include an interim removable partial denture (RPD) to a cast partial denture, a fixed dental prosthesis (FDP), and a more implant-retained prosthesis. However, FDP and implant-retained prosthesis are not always feasible, particularly in patients with excessive residual ridge resorption and jaw defects due to trauma and / or surgical ablation. In such a situation, a dentist may resort to another option of fixed-RPD prosthesis, to restore the defective hard and soft tissues to achieve natural aesthetics, phonetics, comfort, and better hygiene. This hybrid prosthesis fulfils the objectives of the rehabilitation such as support, stability, and retention characteristics similar to a fixed prosthesis and aesthetics and hygiene maintenance of a removable prosthesis.2,3,4,5 Any prosthesis designed or fabricated should be based on the prosthetic principles of support, stability, retention, and preservation of remaining structures.1 From the patient's perspective, retention is one of the important factors for its acceptability. These retentive options range from simple bar and clip attachments to more sophisticated spark erosion overdentures.6,7 Spark erosion prosthesis is technique sensitive, bulky, and requires expensive equipment.6,7 On the other hand, precision attachments provide better vertical support and stimulation to the underlying tissue through intermittent vertical massage.8 Treatment with a hybrid denture is an affordable choice to fulfil the patient's aesthetic demands along with providing a good prognosis for the prosthesis and preservation of the remaining dentition. This article presents two case reports of prosthodontic rehabilitation of a patient with mandibular defects using an attachment-retained fixed-removable hybrid prosthesis.

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G, Dr Sreelakshmi, Dr Divya Hegde, Dr Sajan Shetty, Dr Sanjana Shah, Dr Khushboo Mishra i Dr Sneha Sreeram. "Floating Denture – A Solution for Heavy Maxillary Prosthesis: A Case Report". RGUHS Journal of Dental Sciences 13 (2021): 56–59. http://dx.doi.org/10.26715/rjds.13_2_9.

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Aim: To describe an ingenious technique for the fabrication of light-weight complete denture in severely resorbed ridges. Background: Prosthetic rehabilitation of severely atrophic ridges has always been an ordeal for the clinician. The restorative space between the maxillary and mandibular residual ridges is increased due to severe resorption. The prosthesis overloads the underlying hard and soft tissues exacerbating ridge resorption. Retention, stability, and support are the essential principles on which the success of an entire denture is based. To prevent further resorption of the ridges, the weight of the prosthesis needs to be reduced which can be achieved by making a hollow prosthesis. This case report describes an innovative technique to fabricate a hollow denture-incorporating catheter. Conclusion: The prosthesis developed through the technique was light in weight and eliminated the need for a spacer

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Troiano, Antonio, Giorgio Lo Giudice, Roberto De Luca, Fabrizio Lo Giudice, Salvatore D’Amato, Gianpaolo Tartaro i Giuseppe Colella. "Salvage of Dental Implant Located in Mandibular Odontogenic Cyst. A Conservative Surgical Treatment Proposal". Dentistry Journal 8, nr 2 (11.05.2020): 49. http://dx.doi.org/10.3390/dj8020049.

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The aim of this case report was to evaluate the use of Partsch I cystotomy in order to preserve a dental implant located in an odontogenic cyst extended from 3.2 to 4.4. A 50 year-old woman showed a circular, well-defined unilocular radiolucent area, Ø2.5 cm, in the right mandibular region with an oral implant intruding inside it. The overdenture in the mandibular right site showed no clinical mobility. The authors decided to perform a surgical treatment aimed to preserve the implant. The patient underwent Partsch I surgery followed by iodoform gauze insertion replaced weekly for one month, revision of the previous orthograde endodontic treatments, and an acrylic resin obturator prosthesis application for the following two months. The twelve month follow-up showed no clinical mobility of the right lateral mandibular implant prostheses. Radiographical analysis revealed cystic lesion healing and perimplant bone regeneration. This report highlights the opportunity to apply cystotomy when the cyst involves a dental implant and undermines its stability. This possibility is offered by the peculiar clinical scenario where the implant was stabilized by the presence of a previous prosthetic fixation. Our study led to the application of an operative protocol that allowed for the preservation of the implant.

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Vlasceanu, Daniel, Mihaela Marin, Horia Alexandru Petrescu, Elena Preoteasa i Horia Miron Gheorghiu. "Investigation of the Mechanical Behavior of Mandibular Overdentures Using Finite Element Method". Key Engineering Materials 638 (marzec 2015): 165–70. http://dx.doi.org/10.4028/www.scientific.net/kem.638.165.

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The purpose of this paper is to analyze the overdenture fixed on two mandibular implants anchored on staples, determining the behavior of the prosthesis. It‘s consider this ansamble must operate under of occlusal forces present during various functional activities such as mastication proccess. To analyze the stresses induced by masticatory forces on the anchoring system and mandibular overdenture retention using two implants by type staple system, and its displacement, was built, using the finite element method, a three-dimensional numerical model of a mandibular overdenture with mixed support: implant and mucosa. Geometrical model was developed having as reference a real mandibular complete denture that was 3D scanned previously. These images, which contains three-dimensional size of the prosthesis was imported into a CAD program (Computer Analysis Design) for obtaining geometrical model consisting of lines, surfaces and volumes. The numerical model designed examines various cases of arrangement of total prosthesis implant support in relation to the median axis of the mandible in order to determine the best case form for fixing the prosthesis. Numerical analyzes were performed using Ansys software, a program that uses the finite elements method.

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Stroparo, Jeferson Luis de Oliveira, Fabrício Guimarães Rodrigues, Moira Pedroso Leão, Dilcele Silva Moreira Dziedzic i João César Zielak. "Reposicionamento horizontal mandibular com próteses provisórias removíveis tipo overlay – relato de caso Mandibular horizontal repositioning with removable temporary overlay prostheses – case report". RSBO 16, nr 1 (3.07.2019): 62. http://dx.doi.org/10.21726/rsbo.v16i1.787.

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Introduction: Rehabilitation with the use of overlay-type removable prostheses is indicated in cases of more severe occlusal dysfunction. This type of treatment meets the need for more immediate results, providing aesthetic improvement while the rehabilitation work is being done, while promoting the gradual rehabilitation of occlusal function, re-adjusting the intermaxillary relationship. In addition, the patient can anticipate the final result of the treatment beforethe definitive prosthesis is made. Objective: To show a clinical case of planning and execution of removable overlays. Case report: JCF patient had occlusal dysfunction and presented as main complaint the aesthetic and functional deficiency. He used a removable partial denture (PPR) only on the upper arch. The existing prosthesis did not present stability due to the loss of some dental elements, pillars of the PPR. Two overlays (upper and lower) were indicated because the patient had good periodontal conditions in the remaining dentalelements that were in a favorable position. Necessary exodontia, adequacy of the buccal environment with sub and supragingival scaling and the fabrication of overlays were performed. Conclusion: The use of temporary overlays can provide the necessary time for the patient to adapt to the new occlusal conformation in the period in which the restorations and definitive prostheses are expected to be performed. The use of overlays presented a satisfactoryresult for the proposed treatment, since it promoted the functional rehabilitation, restored aesthetic, even temporarily, and motivated the patient to continue the treatment. According to the patient, there were significant improvements in chewing quality and self-esteem.

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Mehta, Shak, Manjit Kumar, Ajay Bansal, Ritu Batra, Chhavi Sharma i Sanjan Verma. "Prosthodontic Rehabilitation of a Case with Overlay Denture: A Case Report". Dental Journal of Advance Studies 6, nr 02/03 (grudzień 2018): 134–36. http://dx.doi.org/10.1055/s-0038-1677644.

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AbstractA removable dental prosthesis that covers and rests on two or more remaining natural teeth, the roots of natural teeth, and/or dental implants is known as overdenture. This leads to less resorption of residual alveolar ridges. Restoration and modified teeth coronally can also be used as multiple abutments. In most cases, abutments are treated endodontically. In most patients with complete dentures, mandibular denture is difficult to adapt, and there is loss of retention because of less surface area. This case report represents prosthetic rehabilitation of a mandibular edentulous patient with cast coping with short dowels supported overdenture.

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Borgonovo, Andrea E., Simone L. M. Galbiati i Dino Re. "Trefoil System for the Treatment of Mandibular Edentulism: A Case Report with 30 Months Follow-Up". Case Reports in Dentistry 2020 (17.10.2020): 1–6. http://dx.doi.org/10.1155/2020/8845649.

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The purpose of this work is to describe a clinical case of full-arch mandible rehabilitation with a fixed prosthesis on three implants. The chosen protocol is the Trefoil system by Nobel (Nobel Biocare, Zurich, Switzerland) that allows to realize a mandibular fixed rehabilitation on three particularly designed fixtures through the use of prefabricated surgical guides and a preassembled bar on which the prosthesis is built. Both surgical and prosthetic procedures were completed without complications, and after 30 months, the rehabilitations are in good health conditions. The patient is able to maintain a good level of hygiene and is satisfied with the work from an aesthetic and functional point of view.

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Alhammadi, Sara Hussain. "Full Mouth Rehabilitation Using Telescopic Removable Prosthesis". Case Reports in Dentistry 2022 (17.10.2022): 1–9. http://dx.doi.org/10.1155/2022/9536443.

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A female, aged 55 years, was presented to the clinic concerned with her inability to function properly due to missing teeth and collapse of her vertical dimension. On examination, remaining tooth position of the upper arch was favorable for telescopic denture and remaining tooth position of the lower arch was favorable for removable prosthesis. The patient requested an aesthetic maxillary and mandibular denture with no visible metal clasps on smiling. Therefore, upper telescopic removable complete denture and lower chrome cobalt removable prostheses were suggested to the patient as conservative treatment to reestablish her occlusal vertical dimension and restore her aesthetics and function.

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Aneja, S., S. Mittal, J. Duhan, S. Hans i R. Maheshwari. "Implant Supported Mandibular Overdenture with Bilateral Balanced Occlusion: A Case Report". Journal of Oral Health and Community Dentistry 9, nr 1 (styczeń 2015): 44–46. http://dx.doi.org/10.5005/johcd-9-1-44.

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ABSTRACT Implant Supported overdentures have been a common treatment for edentulous patients for the past 25 years and predictable achieve good clinical results. Many patients, especially those who are uncomfortable with dentures, enjoy the additional retention and support implants provide for their dentures. The implant-supported overdenture has been accepted as the standard of care for fully edentulous patients and should be the first choice of treatment for the edentulous mandible. Implant-supported overdentures offer many practical advantages over conventional complete dentures and removable partial dentures. These include decreased bone resorption; reduced or eliminated prosthesis movement; better esthetics; improved tooth position; better occlusion, including improved occlusal load direction, increased occlusal function and maintenance of the occlusal vertical dimension. Supported overdentures improve phonetics, the patient's psychological outlook and quality of life. Conventional dentures rely upon the residual alveolar ridge and mucosa for support and retention. Many patients have problems adapting to their complete dentures, especially to the mandibular prosthesis. The widespread use of denture adhesives is one indication that these prostheses generally provide inadequate comfort and function.

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de Araújo Nobre, Miguel, Carlos Moura Guedes, Ricardo Almeida, António Silva i Nuno Sereno. "Hybrid Polyetheretherketone (PEEK)–Acrylic Resin Prostheses and the All-on-4 Concept: A Full-Arch Implant-Supported Fixed Solution with 3 Years of Follow-Up". Journal of Clinical Medicine 9, nr 7 (10.07.2020): 2187. http://dx.doi.org/10.3390/jcm9072187.

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Background: The aim of this three-year prospective study was to examine the outcome of a solution for full-arch rehabilitation through a fixed implant-supported hybrid prosthesis (polyetheretherketone (PEEK)-acrylic resin) used in conjunction with the All-on-4 concept. Methods: Thirty-seven patients (29 females, 8 males), with an age range of 38 to 78 years (average: 59.8 years) were rehabilitated with 49 full-arch implant-supported prostheses (12 maxillary rehabilitations, 13 mandibular rehabilitations and 12 bimaxillary rehabilitations). The primary outcome measure was prosthetic survival. Secondary outcome measures were marginal bone loss, plaque and bleeding scores, veneer adhesion issues, biological complications, mechanical complications, and the patients’ subjective evaluation. Results: There were two patients (maxillary rehabilitations) lost to follow-up, while one patient withdrew (maxillary rehabilitation). One patient with bimaxillary rehabilitation fractured the mandibular PEEK framework, rendering a 98% prosthetic survival rate. Implant survival was 100%. Average (standard deviation) marginal bone loss at 3-years was 0.40 mm (0.73 mm). Veneer adhesion was the only technical complication (n = 8 patients), resolved for all patients. Nine patients (n = 11 prostheses) experienced mechanical complications (all resolved): fracture of acrylic resin crowns (n = 3 patients), prosthetic and abutment screw loosening (n = 4 patients and 3 patients, respectively), abutment wearing (n = 1 patient). One patient experienced a biological complication (peri-implant pathology), resolved through non-surgical therapy. A 90% satisfaction rate was registered for the patients’ subjective evaluation. Conclusions: Based on the results, the three-year outcome suggests the proposed rehabilitation solution as a legitimate treatment option, providing a potential shock-absorbing alternative that could benefit the implant biological outcome.

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Ow, Andrew, Winston Tan i Lukasz Pienkowski. "Mandibular Reconstruction Using a Custom-Made Titanium Prosthesis: A Case Report on the Use of Virtual Surgical Planning and Computer-Aided Design/Computer-Aided Manufacturing". Craniomaxillofacial Trauma & Reconstruction 9, nr 3 (wrzesień 2016): 246–50. http://dx.doi.org/10.1055/s-0036-1581060.

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The use of virtual surgical planning and computer-aided design/computer-aided manufacturing has been reported to enhance the planning for the reconstruction of mandibular continuity defects. This case report illustrates the use of this technology in the fabrication of a custom-made titanium prosthesis to restore a segmental mandibular defect. The design specifications and sequence of the custom-made titanium prosthesis are discussed. Although successful in this case, there are limitations in its application and case selection is of vital importance.

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Lima Junior, S. M., F. B. D. J. Boos Lima, T. Colferai, P. H. de Moraes i S. Borges. "Total mandibular titanium prosthesis in a child". International Journal of Oral and Maxillofacial Surgery 46 (marzec 2017): 185–86. http://dx.doi.org/10.1016/j.ijom.2017.02.635.

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