Relevant bibliographies by topics / Tooth angulation / Journal articles

Journal articles on the topic 'Tooth angulation'

To see the other types of publications on this topic, follow the link: Tooth angulation.
Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Tooth angulation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Soganci, Ahmet Ertan, Ayse Selenge Akbulut, and Gokcen Sahin. "A novel method for measuring tooth angulation in permanent mandibular second molars with delayed tooth eruption." Journal of Orthodontics 48, no. 3 (April 15, 2021): 260–67. http://dx.doi.org/10.1177/14653125211003911.

Full text
Abstract:
Objective: To investigate the effect of angulation of permanent mandibular second molars (MM2) on eruption problems and investigate a new method of measuring MM2 angulation for the diagnosis and evaluation of delayed tooth eruption (DTE) for easy use in dental practice. Design: Retrospective study. Setting: Department of Orthodontics, Necmettin Erbakan University. Participants: A total of 98 patients aged 9–18 years. Methods: Patients with 64 permanent MM2s with delayed eruption problems were included in the study group. The control group consisted of patients with 83 normally erupted teeth. In addition, a sub-group, consisting of 23 patients showing unilaterally delayed eruption of the same teeth, was set as a split-mouth group. All patients with unilateral delayed eruption of second molar teeth were selected from the study group to form the sub-group. Angulations of permanent MM2s were measured on panoramic radiographs with two measurement methods: (1) a new method; and (2) a previously accepted method. The comparison of the study and control groups was performed by Mann–Whitney U-test and the split-mouth group was analysed with the paired t-test. The P value was set at 0.05 for statistical significance. Results: Measurements of the tooth angulation values of the study group were significantly higher than in the control group for both measurement methods ( P < 0.001). In addition, in the split-mouth group, angulation values of delayed eruption side were significantly higher than the erupted side ( P < 0.001). Conclusion: Increased angulations of permanent MM2s could be associated with delayed eruption problems of these teeth. This new method could be useful in clinical dentistry to determine the eruption evaluation of lower second molars.
APA, Harvard, Vancouver, ISO, and other styles
2

Pawinru, Ardiansyah S. "Angulation change of the third molar tooth in orthodontic treatment." Journal of Dentomaxillofacial Science 2, no. 1 (April 1, 2017): 40. http://dx.doi.org/10.15562/jdmfs.v2i1.448.

Full text
Abstract:
Objective : Impaction of the third molar tooth mandibular is often found in patients with orthodontic treatment. In orthodontic treatment, extraction cases of impaction of the third molar tooth are usually performed, but the patients often refuse this extraction. Extraction of premolar has a good effect on the third molar mandibular angulation during treatment.Material and Methods : This study is a retrospective clinical study with descriptive analytic to find out the effect of the first mandibular premolar tooth extraction to angulation change of the third molar mandibular in orthodontic treatment with a standard edgewise method. Angulation change was performed by comparing the third molar mandibular angulation before and after orthodontic treatment with panoramic radiographs. Angulation of the third molar tooth mandibular was calculated from the angle formed between the long axis of the tooth with the reference line infraorbita.Results : The sample comprised 60 of impacted mandibular third molar region of the left and right regions of 30 patients who had been treated declared cured in clinic of orthodontic specialist of Dentistry Faculty Padjadjaran University. The sample was divided into three (3) groups of patients before treatment angulation of the third molar tooth mandibular under 300, 300 to 600 and above 60o, then measured change of angulation and observed whether it increased, fixed or decreased. Results were analyzed by T- test and Wilcoxon test showed that there was a significant change in angulation of the third molar mandibular in orthodontic treatment with the first premolar tooth mandibular extraction.Conclusion : This study is that the first premolar tooth mandibular extraction affects the angulation of the third molar tooth mandibular after orthodontic treatment.
APA, Harvard, Vancouver, ISO, and other styles
3

Sardar, Tariq, Gulrukh Sheikh, Saddique Aslam, Numan Muhammad Khan, and Javed Akhtar Rana. "Pattern of Angulations and Common Indications for Extraction of Impacted Mandibular Third Molar at KMU-Institute of Dental Sciences, Kohat." Journal of Islamabad Medical & Dental College 8, no. 2 (June 27, 2019): 79–83. http://dx.doi.org/10.35787/jimdc.v8i2.360.

Full text
Abstract:
Background: The extraction of an impacted mandibular third molar (MTM), with associated pathologies or clinical manifestations is an important and one of the most frequent decisions in dentistry. The angle formed by the longitudinal axis of second and third molar is used to determine angulation of impacted MTM. The aim of this study was to identify the pattern of angulations of impacted mandibular third molar and common indications for extraction associated with these angulations.Material and Methods: This descriptive cross-sectional study was carried out at Department of Oral & Maxillofacial Surgery, Khyber Medical University Institute of Dental Sciences, Kohat, Khyber Pakhtunkhwa (KP) from November 2017 to July 2018. A total of 349 patients presenting with impacted mandibular third molars were included in this study. Name, age, gender, address, the angulation of the impacted tooth and the indication for extraction of the impacted tooth were recorded. Data comprising of qualitative and quantitative variables were analyzed using SPSS version 17.Results: Out of 349 patients, 206 were male and 143 females, with the male to female ratio of 1.4:1. The age range of the patients was from 18 years to 60 years with a mean age of 26 ± 6 years. The most common age group with impacted third molar was ≤ 25 years followed by 26 to 30 years’ age group. The most common angulation was mesioangular followed by vertical, horizontal and distoangular impacted mandibular third molar. Pericoronitis was the most common indication for extraction in all angulations except horizontal impaction where root resorption of the second molar was more common.Conclusion: Mesioangular is the most common angulation in impacted mandibular third molars. Pericoronitis is the main indication for all angulations of impacted mandibular third molars except horizontal angulation, occurring mostly in the third decade of life.
APA, Harvard, Vancouver, ISO, and other styles
4

Owens, Ann Marie, and Ama Johal. "Near-End of Treatment Panoramic Radiograph in the Assessment of Mesiodistal Root Angulation." Angle Orthodontist 78, no. 3 (May 1, 2008): 475–81. http://dx.doi.org/10.2319/040107-161.1.

Full text
Abstract:
Abstract Objectives: To test the hypothesis that there is no difference between the actual mesiodistal root angulation and the mesiodistal root angulation as measured on the panoramic radiograph. Materials and Methods: A typodont dentition was set up into a Class I occlusion. Wire struts were placed on the buccal surface of each tooth to represent their long axes. The dentition was fixed into a natural skull for imaging. The radiographic and true mesiodistal angulation of each tooth to a horizontal reference plane (the arch wire) was measured using a coordinate measuring machine (CMM). The mesiodistal root positions were then altered to a more mesial and then more distal position and the measurements were repeated. Results: Only 26.7% of the radiographic root angulations were within the clinically acceptable angular variation range of ±2.5°. The greatest variation in the upper arch occurred in the canine-premolar area where the roots were projected as being more divergent. The greatest variation in the lower arch occurred in the lateral incisor-canine region where these roots were projected as being more convergent. The extent of radiographic distortion is statistically greater in the lower arch than in the upper arch in the ideal (P ≤ .05) and distal (P ≤ .01) root positions. Conclusions: The hypothesis is rejected. There is a clinically significant variation between the radiographic and the true root angulations recorded. Caution is advised when interpreting mesiodistal root angulation using this radiograph.
APA, Harvard, Vancouver, ISO, and other styles
5

Nohadani, Nasila, Yango Pohl, and Sabine Ruf. "Displaced Premolars in Panoramic Radiography—Fact or Fallacy?" Angle Orthodontist 78, no. 2 (March 1, 2008): 309–16. http://dx.doi.org/10.2319/030807-117.1.

Full text
Abstract:
Abstract Objective: To test the null hypothesis that there is no difference between premolar position visualized on panoramic radiographs (PRs) and lateral headfilms (LHs). Materials and Methods: The prevalence of differences in the direction of crown angulation between PR and LH was assessed. Furthermore, brass wire markers with different sagittal and transverse angulations were placed in a dry skull. With the markers in place, LHs and PRs were taken. Results: A difference in the direction of crown angulation of unerupted second premolars between PR and LH occurred in 19.5% of patients. The reason for the angulation differences is a buccolingual orientation of the tooth, which appears as a mesiodistal angulation on the PR. Conclusion: The null hypothesis was rejected since in one-fifth of the patients premolar projection differs between the panoramic radiograph and the lateral headfilm.
APA, Harvard, Vancouver, ISO, and other styles
6

BATUBARA, Fitri Yunita, and Dewi KARTİKA. "Root morphology analysis of posterior teeth using intraoral periapical radiograph." Journal of Syiah Kuala Dentistry Society 7, no. 2 (January 11, 2023): 93–97. http://dx.doi.org/10.24815/jds.v7i2.30232.

Full text
Abstract:
Oral and dental health problems are still a part of ongoing national health issues in Indonesia.Through endodontic treatment, also called root canal treatment, a decayed tooth can still be preserved and restoredto its original form. It is done if the dental infection has spread into the pulp or the tooth has become nonvital due totrauma or accident. Root morphology is one of the main concerns before performing endodontic treatment. Aperiapical radiograph taken with bisecting and paralleling techniques is the first method in intraoral radiographicexamination to assist dental diagnosis and case management. This research aimed to analyze the mean length ofposterior teeth using an intraoral periapical radiograph and the difference in posterior teeth length in differentvertical angulations. A total of four extracted lower premolars and four extracted lower molars served as samples inthis analysis. They were mounted in an occluder, and a periapical radiograph was obtained using paralleling andbisecting technique with vertical angulation of -20, -15, -10, -5, 0, +5, +10, +15, and +20. The tooth length wasmeasured from the crown's highest point to the tooth apex's lowest end. Data obtained was then calculated usingSPSS. The result showed that the mean length of the lower premolar and molar was longer if the vertical angulationreached +20. Analysis with one-way ANOVA for the difference in the length of premolars, mesial root, and distalroot of lower molars between a direct measurement with digital caliper and measurement on periapical radiographstaken with paralleling technique and bisecting technique in all vertical angulations showed a p-value of  0,05.There were no significant differences in the mean length of lower premolars and the mesial and distal root of lowermolars between direct measurement using a digital caliper and measure on periapical radiographs taken withparalleling technique and bisecting technique in vertical angulations of -15, -10, -5, 0, +5, +10, +15, and +20.KEYWORDS: Vertical angulation, posterior tooth root morphology, periapical radiograph
APA, Harvard, Vancouver, ISO, and other styles
7

Abulohom, Faisal, Hesham Mohammed Al-Sharani, Zakarya Al-Muaalemi, Abdalhaq Hussin Alhasani, Nassr Abdalwhab Al-Hutbany, Mubarak Ahmed Mashrah, Ekaterina Diachkova, and Tenglong Hu. "Prevalence and Pattern of Maxillary Wisdom Tooth Impaction and Angulation in Relation to the Maxillary Sinus among Yemeni Students." Research, Society and Development 11, no. 10 (August 9, 2022): e522111030579. http://dx.doi.org/10.33448/rsd-v11i10.30579.

Full text
Abstract:
The goal of this study was to determine the prevalence of maxillary third molar impaction and angulation, as well as its relationship to the maxillary sinus, in a group of Yemeni students. Panoramic x-rays were used to assess 200 students, 102 men and 98 females, in this retrospective investigation. Chi-square tests were used to assess age, gender, maxillary sinus approximation to maxillary third molar roots, depth of impaction, and angulation. A total of 327 maxillary third molars were examined; the most congenitally missing maxillary third molar was on the right side, and females (10.25%) had more maxillary third molars engaged in the maxillary sinus than males (8.0%) (4.9%). Type A (52.9%) was the most common according to Pell and Gregory's classification, although vertical angulations of the maxillary third molar were seen more frequently (85.32%). Congenitally missing maxillary third molars are more common in females, and position A was the most common among the maxillary third molars on a vertical level.
APA, Harvard, Vancouver, ISO, and other styles
8

Kim, Dong Mok, Kyung Duk Park, and Oh Won Kwon. "Assessment of mesiodistal tooth angulation on the panoramic radiograph." Clinical Orthodontics and Research 3, no. 3 (August 2000): 153–54. http://dx.doi.org/10.1034/j.1600-0544.2000.30307.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Shepherd, Norman J., Vincent J. Morgan, and Robert J. Chapman. "ANGULATION ASSESSMENT OF ANTERIOR SINGLE TOOTH ROOT FORM IMPLANTS." Implant Dentistry 4, no. 1 (1995): 52–56. http://dx.doi.org/10.1097/00008505-199504000-00009.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Shepherd, N. J., V. J. Morgan, and R. J. Chapman. "Angulation assessment of anterior single tooth root form implants." Implant Dentistry 4, no. 1 (1995): 66. http://dx.doi.org/10.1097/00008505-199504000-00022.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Torres, Carlos Rocha Gomes, Eduardo Galera da Silva, Ana Paula Martins Gomes, Clovis Pagani, Ana Claudia Carvalho Xavier, and Maria Beatriz Beber Kamozaki. "Comparison of Different Ultrasonic Tip Angulations on Time Required for Cast Post Removal." World Journal of Dentistry 5, no. 3 (2014): 147–51. http://dx.doi.org/10.5005/jp-journals-10015-1277.

Full text
Abstract:
ABSTRACT Aim The aim of this study was to design, develop and compare ultrasound tips with different angulations on time required for cast post removal. Materials and methods To test and compare the ultrasonic tips developed, 36 metal patterns were fabricated from tin bars, on a mechanical precision lathe. Each metal pattern simulated an endodontically treated tooth, without coronal remaining, prepared to receive a cast post with 10 mm long. The cast posts were cemented with zinc phosphate cement. The metal patterns with their respective intraradicular posts cemented were stored at 37°C, at relative humidity 100%, for a period of 48 hours. After this period, the specimens were randomly divided into three groups, and each group was submitted to the action of one of the ultrasonic tips (n = 12): G1—tip with 30° angulation; G2—tip with 45° angulation and G3—tip without angulation (straight tip). Each ultrasonic tip was used on the surfaces of the cast posts (mesial, distal, buccal, lingual and incisal) for 5 seconds, at maximum power, until the cast post removal using an ultrasound device (Jet Sonic, Satelec System, Gnatus, Ribeirão Preto, SP, Brazil). The time required for cast posts removal was recorded and the data statistically analyzed by the ANOVA and Tukey tests (p < 0.05). Results The means of time evaluated for cast posts removal were G1: 59.25s; G2: 119.0s and G3: 48.4s. Group 2 presented the highest mean value in seconds, differing statistically from G1 and G3. No significant differences were observed between G1 and G3. Conclusion It may be concluded that the ultrasonic tip angulation had a direct influence on the time required for cast posts removal by ultrasound. When the different ultrasonic tips were compared, the 30° angulation and the straight tips required a shorter ultrasonic vibration time. All cast posts luted with zinc phosphate were successfully removed in a relatively short time by the different ultrasonic tips analyzed. How to cite this article da Silva EG, Xavier ACC, Kamozaki MBB, Gomes APM, Torres CRG, Pagani C. Comparison of Different Ultrasonic Tip Angulations on Time Required for Cast Post Removal. World J Dent 2014;5(3):147-151.
APA, Harvard, Vancouver, ISO, and other styles
12

Lokesh, NK, CMS Krishna Prasad, D. Lakshmayya Naidu, T. Harini, H. Vidyadhara Lakshmi, and HS Dharmesh. "Biomechanical Characteristics of Microimplant for Anchorage in Orthodontics: A 3D Finite Element Model Study." Journal of Contemporary Dental Practice 14, no. 6 (2013): 1076–79. http://dx.doi.org/10.5005/jp-journals-10024-1454.

Full text
Abstract:
ABSTRACT In orthodontic treatment, anchorage control is essential for success. A recent development, stationary anchorage (microimplants) eliminates one of the uncertainties of orthodontic tooth movement by offering absolute control over potentially undesirable counter movements. The objective of this study was to establish a 3D finite element model for microimplant and to analyze the influence of different angulations to the long axis of the teeth (30-90°) on the biomechanical characteristics of orthodontic anchorage implant-bone interface. Results of this study showed that largest stress and deformation was seen in the cortical bone and upper region of trabecular bone. Stress and deformation increased as the angulations of the implant to the long axis of the tooth increased. As the angulation of the implant to the long axis of maxillary 1st molar increased, stress and deformation also decreased. Maximum stress and displacement were recorded when implant was placed perpendicular to the long axis of maxillary 1st molar. How to cite this article Naidu DL, Harini T, Prasad CMSK, Lakshmi HV, Lokesh NK, Dharmesh HS. Biomechanical Characteristics of Microimplant for Anchorage in Orthodontics: A 3D Finite Element Model Study. J Contemp Dent Pract 2013;14(6):1076-1079.
APA, Harvard, Vancouver, ISO, and other styles
13

Kuncoro, Rebecca Azary, and Yulita Kristanti. "MANAGEMENT OF MISALIGNED CROWN FRACTURE WITH EXTERNAL ROOF RESORPTION USING MINERAL TRIOXIDE AGGREGATE (MTA) AND CUSTOM CAST POST AND CORE RESTORATION." Jurnal Teknosains 6, no. 2 (August 30, 2017): 95. http://dx.doi.org/10.22146/teknosains.27596.

Full text
Abstract:
Crown fracture is the most commonly reported traumatic injuries in the permanent dentition. One of the unfavorable response to trauma is the development of external root resorption (ERR). Injuries may also cause tooth angulation changes so it should be treated with a customized cast post and core to produce better aesthetic result and to obtain sufficient compressive strength.The case report describes the use of mineral trioxide aggregate (MTA) as an apical plug to promote periapical healing of an open apex and the use of custom cast post and core to correct the tooth angulation.Case report.A 23-year-old male patient came to RSGM Prof. Soedomo with a chief complaint of a fractured and labial misaligned of upper right central incisor due to trauma 10 years ago. Patient expressed his unwillingness to get orthodontic therapy. Percussion and palpation test showed no discomfort or pain. There was no mobility noticed. Radiograph showed periapical radiolucency and open apex. Tooth was treated with calcium hydroxide dressing and MTA apical plugs were placed in the apical portion of canals. Tooth was restored with custom cast post and core to correct the angulation followed by the placement of an porcelain crown.MTA can be used as apical plug for sealing open apex caused by ERR combined with custom cast post and core for other option for misaligned tooth.
APA, Harvard, Vancouver, ISO, and other styles
14

Paul, Rosaline Tina, A. R. Ligil, V. T. Vineeth, and P. P. Biswas. "Modified Precision Lingual Bonding Technique: A Step-wise Approach with Torque Angulation Device-bracket Positioning Device." APOS Trends in Orthodontics 7 (August 1, 2017): 199–203. http://dx.doi.org/10.4103/apos.apos_97_16.

Full text
Abstract:
Objectives Contemporary preadjusted edgewise appliance is all about the precision in bracket design, prescription and positioning in addition to the orthodontist’s skill and training. However, achieving it is a bigger challenge as the anatomy of the lingual surface of a tooth is uneven, dissimilar, and moreover the tooth alignment on the lingual surface is variant. Thus, the need for an accurate method of bracket positioning with predetermined torque and angulation incorporated in the brackets according to the patients’ need is of key importance. Materials and Methods A TAD- BPD machine used to enhance the accuracy of bracket positioning and bioplast accurate tray transfer technique was used. Results A step-wise procedures in bracket positioning and fabricating an indirect bonding tray for lingual orthodontics using the torque angulation device-bracket positioning device. Conclusions This technique facilitated unhindered bonding even in severely crowded cases and easy rebonding during mid-treatment stages.
APA, Harvard, Vancouver, ISO, and other styles
15

Tao, Tianjin, Hengyan Liang, Xinyu Yan, Qi Fan, Qingsong Jiang, Fan Jian, Hu Long, and Wenli Lai. "Comparison of Root Parallelism in Extraction Cases Treated with Clear Aligners vs. Fixed Appliances." Applied Sciences 12, no. 22 (November 18, 2022): 11756. http://dx.doi.org/10.3390/app122211756.

Full text
Abstract:
In the process of orthodontic treatment, root parallelism is related to the relapse of extraction spaces, black triangles, and periodontal health. However, there are few studies on root parallelism in extraction cases with different types of appliances. The objective was to compare the root parallelism in extraction cases treated with clear aligners vs. those treated with fixed appliances by measuring the differences per extraction site and to access the root-movement control capacity of both orthodontic appliances. A retrospective study was conducted on cases in which the first premolars were extracted, treated by clear aligner appliance (“Invisalign” system, 28 patients) or fixed appliance (30 patients). The angulations of the tooth axis (canines, the second premolars, the first molars, and the second molars) were measured to analyze and compare the difference in root parallelism between the two orthodontic appliances. The percentage of root parallelism between the canine and second premolar in both groups had no significant difference. However, judging from the average angle difference value, the fixed appliance might have a greater range in root angulation adjustment than the aligner. In the angulation categories, the aligner mainly showed root apical divergence, while the fixed appliance mainly showed root apical convergence. The dental crown of the molars was mainly non-tipping in both groups, but it could be observed that the dental crown of the maxillary molars had a tendency toward mesial inclination. In conclusion, the same root parallelism and root inclination were obtained in tooth extraction cases whether treated by clear aligners or fixed appliances. This study provides clinicians with more information on the performance of clear aligners and fixed appliances.
APA, Harvard, Vancouver, ISO, and other styles
16

Hadler-Olsen, Sigurd, Anders Sjögren, Jeanett Steinnes, Mari Dubland, Napat Limchaichana Bolstad, Pertti Pirttiniemi, Heidi Kerosuo, and Raija Lähdesmaki. "Double vs single primary tooth extraction in interceptive treatment of palatally displaced canines:." Angle Orthodontist 90, no. 6 (July 21, 2020): 751–57. http://dx.doi.org/10.2319/031920-196.1.

Full text
Abstract:
ABSTRACT Objectives To compare the impact of primary canine and primary first molar extractions with extractions of only the primary canine regarding correction of palatally displaced canines (PDCs). Materials and Methods Thirty-two children aged 9.5–13.5 years with 48 PDCs were randomly allocated to either the double-extraction group (DEG) or single-extraction group (SEG). Clinical and radiographic examinations were performed at baseline and at 6-month intervals until the canine emerged or orthodontic treatment was started. Outcome measures were: emergence of maxillary canine (yes/no), emergence of maxillary canine into a favorable position (yes/no), and maxillary canine positional change (angulation and sector). Factors influencing PDC emergence were analyzed using logistic regression. Results In the DEG, 64% (16/25) of canines emerged into the oral cavity vs 78% (18/23) in the SEG (P = .283). Favorable PDC position at trial end was seen in 64% (16/25) of the DEG vs 57% (13/23) of the SEG (P = .600). Significant distal movement of PDCs was recorded in the DEG and SEG, though no significant difference was observed between groups. Significant predictors of canine emergence were initial canine angulation (Angle A) (P = .008) and space conditions at T0 (P = .030). Conclusions Double or single primary tooth extraction procedures are equivalent in supporting PDC eruption into the oral cavity and into a favorable position in the dental arch. Initial canine angulation and space assessments may be used as predictors of successful PDC eruption.
APA, Harvard, Vancouver, ISO, and other styles
17

Germane, Nicholas, Bruce E. Bentley, and Robert J. Isaacson. "Three biologic variables modifying faciolingual tooth angulation by straight-wire appliances." American Journal of Orthodontics and Dentofacial Orthopedics 96, no. 4 (October 1989): 312–19. http://dx.doi.org/10.1016/0889-5406(89)90350-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

AL-Hamdani, Dr Sundus Anwer M., Dr Maha M. Al-Sened, Dr Khawlah Tarteeb Hussein, and Dr Ahmed Samir Al-Naaimi. "Factors associated with pericoronitis among subjects with impacted third molars teeth." Mustansiria Dental Journal 8, no. 2 (March 13, 2018): 193–201. http://dx.doi.org/10.32828/mdj.v8i2.326.

Full text
Abstract:
The removal of impacted third molars is one of the most common procedures inoral surgery. This is because third molars show high incidence of impaction and areoften associated with pain due to pericoronitis.Assess the reasons for extraction and describe the type of tooth angulations andstate of eruption. Determine the association of selected factors with pericoronitis as areason for extraction.A total of 256 patients having symptomatic third molars and referred to the oralsurgery department for consultation, diagnosis and treatment of partially orcompletely impacted third molars in the mandible and maxilla were included in thesample. All these teeth were surgically treated.the most common cause of surgical extraction of third molars was pericoronitis(86.7%). The condition occurs mostly in mandible and in the 25-29 years age group.Horizontal/transverse third molars were more affected by pericoronitis (96.9%)followed by vertical angulations (91.6%). Pericoronitis encountered more frequentlywith complete soft tissue impaction (93.3%).pericoronitis was the most common cause of third molar extraction. Factorsassociated with increased risk of having pericoronitis include: age group 25-29 years,mandible location, Horizontal / transverse angulation type and complete soft tissueimpactions.
APA, Harvard, Vancouver, ISO, and other styles
19

Jang, Jin-Myoung, Je Seon Song, Jae-Ho Lee, Hyung-Jun Choi, and Seong-Oh Kim. "Changing the Angulation of the Tooth Germ in the Bony Crypt: A Case Report." Journal of Clinical Pediatric Dentistry 42, no. 5 (January 1, 2018): 401–5. http://dx.doi.org/10.17796/1053-4625-42.5.14.

Full text
Abstract:
An ankylosed primary molar may cause rotation or ectopic impaction of succedaneous premolar. When conventional treatment modalities such as observation, surgical exposure with or without orthodontic traction, and autotransplantation are not possible, the simple surgical relocation method could be an alternative treatment option for a lingually rotated premolar during the tooth germ stage before opting to extraction. In the case reported herein, the lingually rotated permanent mandibular second premolar tooth germ was surgically relocated within its bony crypt. Continued root development and spontaneous eruption were observed without complications during the 3.5-year follow-up period.
APA, Harvard, Vancouver, ISO, and other styles
20

Simić, Sanja, Predrag Nikolić, Jelena Stanišić Zindović, Radovan Jovanović, Ivana Stošović Kalezić, Aleksandar Djordjević, and Vesna Popov. "Root Resorptions on Adjacent Teeth Associated with Impacted Maxillary Canines." Diagnostics 12, no. 2 (February 1, 2022): 380. http://dx.doi.org/10.3390/diagnostics12020380.

Full text
Abstract:
Aim: Through the use of CBCT images, many unidentified features of impacted canines can be easily resolved. The potential collision of impacted maxillary canines and adjacent teeth could lead to root resorption (RR). The aim of this study is to examine the prevalence, location and severity of RR on adjacent teeth caused by impacted maxillary canines and the association between the adjacent teeth and the features of maxillary impacted canines on CBCT. Methods: This study examined 89 subjects with 108 maxillary impacted canines, having had no previous orthodontic treatment (mean age: 18.3 ± 4.1 years). The following impacted-canine-related parameters were analyzed on the CBCT images: location; RR levels on adjacent teeth; occlusal line and midline distances of impacted canines; and the angulations of impacted canines to the midline, lateral incisor and occlusal line. Logistic regression was used to evaluate the association between RR and the measured parameters on CBCT. Results: In this study, we found that the majority of our patients with impacted maxillary canines were female (62.5%). Of the total 108 maxillary impacted canines, 60.2% resorbed the adjacent teeth of the affected quadrants. Lateral incisors were the most affected (34.3%). The mean age of subjects with RR was 16.7 ± 3.5 years. The frequency of RR was statistically significantly higher in female subjects (40.4%). Slight RR was the most frequent (30.5%) and the highest incidence noted at the apical third of the root (29.6%). Regarding the impacted maxillary canine angulation to the midline and adjacent tooth, higher values of angulation caused severe forms of RR (p < 0.05). Conclusion: The sensitivity of CBCT allows for the accurate diagnosis of the location and the degree of RR, alongside the angulation and distance of impacted canines to adjacent teeth. The association between the linear and angular features of the impacted maxillary canines and RR was confirmed.
APA, Harvard, Vancouver, ISO, and other styles
21

Pontes, Luana F., Rodolpho L. Cecim, Sissy M. Machado, and David Normando. "Tooth angulation and dental arch perimeter—the effect of orthodontic bracket prescription." European Journal of Orthodontics 37, no. 4 (October 14, 2014): 435–39. http://dx.doi.org/10.1093/ejo/cju055.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

ElBeialy, Amr, Fouad Elsharby, and Hend ElSayed. "Canine retraction rate and angulation with 0.017”X0.025” versus Canine retraction rate and angulation with 0.017”X0.025” versus 0.016”X0.022” stainless steel arch wire with a power arm 0.016”X0.022” stainless steel arch wire with a power arm." Future Dental Journal 8, no. 1 (June 1, 2022): 17–20. http://dx.doi.org/10.54623/fdj.8013.

Full text
Abstract:
Background: The dimensions of the arch wire affect its stiffness and the play between the wire and bracket. Canine retraction over stiffer arch wires limits the degree of canine tipping. However, the greater the wire dimensions, the greater the resistance to sliding. Frictional resistance is known to delay tooth movement. Aim: The aim of this controlled clinical trial was to compare canine retraction rate and angulation with 0.017”X0.025” versus 0.016”X0.022” stainless steel arch wire with a power arm. Materials and Methods: Twenty-four Class II malocclusion patients (age 13.8± 2.6 years) participated in this study. The teeth were leveled and aligned. Bilateral maxillary first premolars were extracted. In group A, the canines were retracted over 0.017”X0.025” wires. In group B, they were retracted using 0.016”X0.022” wires with a vertical power arm. The retraction force was 150g generated by elastomeric chains. The canine retraction rate and angulation were measured at the end of six months. The rates in the two groups were compared with the t-test and the angulation with the Mann Whitney test. Results: canine retraction rate was 4.64±1.5 in group A and 5.24±1.45 in group B. The canine angulation was 6.41±5.14 and 6.73±6.0 for group A and B, respectively. Conclusion: No difference was observed in the canine retraction rate or angulation with 0.017”X0.025” versus 0.016”X0.022” stainless steel arch wire with a power arm.
APA, Harvard, Vancouver, ISO, and other styles
23

Talwar, Aditya, Naval Bawaskar, and Shweta R. Bhat. "Rho Loop: A Novel Approach for Correcting Unfavorably Rotated Bilateral Teeth." Journal of Indian Orthodontic Society 55, no. 3 (April 26, 2021): 339–41. http://dx.doi.org/10.1177/03015742211001642.

Full text
Abstract:
Rectangular loops have been advocated for correcting severely malaligned teeth due to their simplicity and range of activation. This article describes a novel design of two rectangular loops used for correcting the bilaterally malaligned teeth without using the molars as anchor tooth. The present Rho loop offers an alternative for improving the position and angulation of severely malaligned bilateral teeth.
APA, Harvard, Vancouver, ISO, and other styles
24

Yunus, Barunawaty, Kenrico John Nursalim, and Andi Sumidarti. "Prevalence of impacted third maxillary molar tooth with skeletal malocclusion reviewed from cephalometric imaging in RSGM Kandea and Ladokgi Makassar year 2016-2019." Makassar Dental Journal 11, no. 1 (April 1, 2022): 9–12. http://dx.doi.org/10.35856/mdj.v11i1.498.

Full text
Abstract:
Background: Radiography is an inseparable part of dentistry, one of which is cephalometric techniques. Impacted tooth is a con-dition of the tooth that cannot erupt completely; whereas malocclusion is a mismatch between the two jaws. Objective: To de-termine the prevalence of maxillary third molars with skeletal malocclusion at Hasanuddin University Hospital and Ladokgi Ma-kassar Hospital. Methods: This descriptive observational research used total sampling research design. The population are all cephalometric radiographic data of patients aged 17-30 years collected from medical record data years 2016-2019. The data are processed in tables. Results: A total of 45 (56.3%) samples were impacted and 35 (43.8%) samples were not impacted. Class I skeletal malocclusion is the most common in all impaction cases and women are more prevalence than men. The group of 20-22 years was the most affected sample. The most common angulation is distoangular. Conclusion: Maxillary third molar im-paction with skeletal malocclusion was more common in women, in the age group 20-22 years, with the most impacted angulati-on being distoangular. Class I skeletal malocclusions were the most common in the sample, followed by Class II, and Class III.
APA, Harvard, Vancouver, ISO, and other styles
25

Miresmaeili, Amirfarhang, Nasrin Farhadian, Vahid Mollabashi, and Faezeh Yousefi. "Web-based evaluation of experts' opinions on impacted maxillary canines forced eruption using CBCT." Dental Press Journal of Orthodontics 20, no. 2 (April 2015): 90–99. http://dx.doi.org/10.1590/2176-9451.20.2.090-099.oar.

Full text
Abstract:
AIM: This study aims at examining the difficulty in performing forced eruption of impacted maxillary canines, using CBCT information and according to experienced orthodontist's opinion. The second aim was to find the most important factors related to this decision. METHODS: Based on a careful literature review on impacted maxillary canines, ten main factors were selected to assess difficulties associated with impacted teeth. Thirty six consecutive patients with 50 impacted maxillary canines were examined and variables were measured for each impacted tooth using Dolphin 3D software. Ten orthodontists assessed the radiographs of teeth and provided their opinion on the difficulty in bringing impacted teeth into occlusion named subjective degree of difficulty (SDD). The correlation established between mean SDD of each tooth and measured variables were analyzed by means of linear regression. RESULTS: Mean SDD was 6.45 ± 1.22 for all 50 teeth. Linear regression showed a high coefficient of correlation between mean SDD and age, dilacerations, vertical height, angulation and horizontal overlap (P < 0.05). CONCLUSION: To predict the difficulty of impacted maxillary canines forced eruption, according to the opinion of experienced orthodontists, the factors age, dilaceration, angulation, overlap and vertical distance from the occlusal plane are the most important variables.
APA, Harvard, Vancouver, ISO, and other styles
26

Roig-Vanaclocha, Ana, Naia Bustamante-Hernández, Maria Fernanda Solá-Ruíz, Carla Fons-Badal, Eduardo Selva-Otaolaurruchi, and Rubén Agustín-Panadero. "Efficacy of Miniscrews in Gaining Prosthetic Space for a Dental Implant to Replace the Mandibular First Molar: A Case Series." Applied Sciences 11, no. 2 (January 10, 2021): 607. http://dx.doi.org/10.3390/app11020607.

Full text
Abstract:
Background: The objective of this case series was to evaluate the efficacy of miniscrews to upright the lower second molar as a result of early loss of the lower first molar in order to permit rehabilitation by means of an implant-supported single crown. Methods: The case series included ten patients who each received a miniscrew placed distal of the second molar in order to straighten the tooth; the prosthetic space gained (sufficient to allow implant placement in the edentulous space) and the change in angulation obtained were analyzed. The changes produced by miniscrews were evaluated in radiographs. Results: Statistical analysis identified significant improvements in angulation (p = 0.005) and significant amounts of space gained (p = 0.005) as well as a strong correlation between these two parameters (r = −0.93; p < 0.001). Conclusions: The use of miniscrews alone without the intervention of other orthodontic methods to straighten a mesialized lower second molar in order to replace a missing first molar with an implant significantly improves both the angulation of the molar and the prosthetic space available.
APA, Harvard, Vancouver, ISO, and other styles
27

Roig-Vanaclocha, Ana, Naia Bustamante-Hernández, Maria Fernanda Solá-Ruíz, Carla Fons-Badal, Eduardo Selva-Otaolaurruchi, and Rubén Agustín-Panadero. "Efficacy of Miniscrews in Gaining Prosthetic Space for a Dental Implant to Replace the Mandibular First Molar: A Case Series." Applied Sciences 11, no. 2 (January 10, 2021): 607. http://dx.doi.org/10.3390/app11020607.

Full text
Abstract:
Background: The objective of this case series was to evaluate the efficacy of miniscrews to upright the lower second molar as a result of early loss of the lower first molar in order to permit rehabilitation by means of an implant-supported single crown. Methods: The case series included ten patients who each received a miniscrew placed distal of the second molar in order to straighten the tooth; the prosthetic space gained (sufficient to allow implant placement in the edentulous space) and the change in angulation obtained were analyzed. The changes produced by miniscrews were evaluated in radiographs. Results: Statistical analysis identified significant improvements in angulation (p = 0.005) and significant amounts of space gained (p = 0.005) as well as a strong correlation between these two parameters (r = −0.93; p < 0.001). Conclusions: The use of miniscrews alone without the intervention of other orthodontic methods to straighten a mesialized lower second molar in order to replace a missing first molar with an implant significantly improves both the angulation of the molar and the prosthetic space available.
APA, Harvard, Vancouver, ISO, and other styles
28

Lamontagne, Pierre, Yacoub Al-Tarakemah, and Eino Honkala. "Relationship between the Preferred Chewing Side and the Angulation of Anterior Tooth Guidance." Medical Principles and Practice 22, no. 6 (2013): 545–49. http://dx.doi.org/10.1159/000353466.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Machado, Marcos Teixeira, Edelcio de Souza Rendohl, Karina Andrea Novaes Olivieri, Milton Edson Miranda, and William Cunha Brandt. "Influence of angulation and height of tooth preparation on the distribution of tensions in prosthetic crowns for upper central incisor." Brazilian Journal of Oral Sciences 18 (November 12, 2019): e191620. http://dx.doi.org/10.20396/bjos.v18i0.8657259.

Full text
Abstract:
Aim: it was to use tridimensional finite element analysis (FEA) to analyze the effect of height and angulation of prosthetic preparations on the distribution of stresses for lithium disilicate prosthetic crowns, the underlying resin cement, and the prosthetic preparation of a superior central incisor. Methods: a CAD modeling software, SolidWorks 2013, was used to generate three-dimensional virtual models comprising the dimensions of the preparation parameters. Three angles (6, 12 and 16 degrees) were simulated on the prepared walls and two wall heights were utilized (4 and 5 mm), for a total of six model groups according to the height and angulation of the walls. A vertical line in the Y-axis was used as a reference for determining the degrees of convergence (inclination of the preparations). The chamfer finish and preparation width were standardized for all groups. Results: the 4 mm preparations behaved more appropriately when the axial wall convergence was approximately 6 degrees. The 5 mm preparations required 12 degrees of angulation. In relation to resin cement, there was better stress distribution when the angle of incisal convergence was between 6 and 12 degrees. An increase to 16 degrees led to a considerable increase in peak stress at the preparation margin. Conclusion: it was concluded that the convergence of the axial walls of coronal preparations with 4 and 5 mm heights should be 6 and 12 degrees, respectively, to avoid high tension spikes in the underlying resin cement.
APA, Harvard, Vancouver, ISO, and other styles
30

Sharma, Sarang, Shibani Grover, Vivek Sharma, Dhirendra Srivastava, and Meenu Mittal. "Endodontic and Esthetic Management of a Dilacerated Maxillary Central Incisor Having Two Root Canals Using Cone Beam Computed Tomography as a Diagnostic Aid." Case Reports in Dentistry 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/861942.

Full text
Abstract:
Traumatic injuries to the primary dentition are quite common. When primary teeth are subjected to trauma, force transmission and/or invasion of the underlying tooth germs lying in close proximity can result in a variety of disturbances in the permanent successors. Few of these disturbances include hypoplasia, dilaceration, or alteration in the eruption sequence and pattern. Dilaceration is defined as an angulation or sharp bend or curve in the linear relationship of the crown of a tooth to its root. A rare case of maxillary left central incisor having crown dilaceration and Vertucci’s type II canal configuration with symptomatic periapical periodontitis is reported. Cone beam computed tomography was used for better understanding of the anomaly and complicated root canal morphology. The tooth was successfully managed by nonsurgical root canal therapy and restoration with resin composite to restore esthetics.
APA, Harvard, Vancouver, ISO, and other styles
31

Akadiri, Oladimeji A., Ambrose E. Obiechina, Juwon T. Arotiba, and Abiodun O. Fasola. "Relative Impact of Patient Characteristics and Radiographic Variables on the Difficulty of Removing Impacted Mandibular Third Molars." Journal of Contemporary Dental Practice 9, no. 4 (2008): 51–58. http://dx.doi.org/10.5005/jcdp-9-4-51.

Full text
Abstract:
Abstract Aim The aim of this study was to assess the relative contributions of patient characteristics and radiographic variables to the difficulty of extraction of impacted mandibular third molars in a Nigerian population. Methods and Materials Seventy-nine consecutive patients undergoing mandibular third molar extractions were recruited for this prospective cohort study. Specific patient characteristics and radiographic variables were recorded. All extractions were performed under local anesthesia by the same oral surgeon, and the surgical difficulty was assessed based on the duration of surgery. Results Body weight (BW) (P=0.009) and body surface area (BSA) (P=0.004) were the significant patient characteristics while tooth impaction depth (P=0.002), number of roots (P=0.035), and tooth angulation (P=0.003) were the significant radiographic variables associated with surgical difficulty using a univariate analysis. A multiple linear regression model was constructed with these variables using surgical difficulty as the dependent variable. Radiographic factors were found to be the more important determinants of surgical difficulty with the depth of impaction (P=0.038) being the singular most important factor. Conclusion Although the difficulty of surgical removal of impacted lower third molars is dependent on BW, BSA, impaction depth, tooth angulation, and the number of roots, radiographic variables were of greater importance with impaction depth being the most important single factor. Citation Akadiri OA, Obiechina AE, Arotiba JT, Fasola AO. Relative Impact of Patient Characteristics and Radiographic Variables on the Difficulty of Removing Impacted Mandibular Third Molars. J Contemp Dent Pract 2008 May; (9)4:051-058.
APA, Harvard, Vancouver, ISO, and other styles
32

Bataineh, Anwar, Abdalla Hazza'a, and Abd-albaset Odat. "Angulation of Mandibular Third Molars as a Predictive Factor for Pericoronitis." Journal of Contemporary Dental Practice 10, no. 3 (2009): 51–58. http://dx.doi.org/10.5005/jcdp-10-3-51.

Full text
Abstract:
Abstract Aim The aims of this study were to investigate the association between pericoronitis and the angular position, state of eruption, and the depth of impaction of mandibular third molars as well as to compare these findings with similar studies. Methods and Materials A total of 242 patients ranging in age from 18 to 41 years of age suffering from pericoronitis were examined. Subjective and objective observations were recorded on a checklist that included the name, age, gender, type of pericoronitis and state of eruption, position of the affected tooth for each patient as well as any radiographic changes in the mandibular third molars. Results The peak age for the occurrence of pericoronitis was in the 21-25 year-old age group. The soft tissues adjacent to vertically inclined, partially erupted mandibular third molars at the level of or above the occlusal plane were the most commonly affected. There was a statistically significant association between radiographic changes and the mesioangular position of the tooth (p<0.002) and the age group of the subject (p=0.004), but the association was not statistically significant between the gender of the subject, type of pericoronitis, state of eruption, and depth of impaction. Conclusion The soft tissues adjacent to vertically inclined, partially erupted mandibular third molars were more frequently affected by pericoronitis than teeth that are soft tissue impacted or erupted. Mesioangular erupted third molars were the teeth most frequently associated with bone loss. Clinical Significance The soft tissues at highest risk of developing pericoronitis are those adjacent to mandibular third molars that are partially erupted, in a vertical position, and erupted to the level of or above the occlusal plane. Citation Hazza'a A, Bataineh A, Odat A. Angulation of Mandibular Third Molars as a Predictive Factor for Pericoronitis. J Contemp Dent Pract 2009 May; (10)3:051-058.
APA, Harvard, Vancouver, ISO, and other styles
33

Sammartino, Gilberto, Juan Carlos Prados-Frutos, Francesco Riccitiello, Pietro Felice, Vincenzo Cerone, Roberta Gasparro, and Hom-Lay Wang. "The Relevance of the Use of Radiographic Planning in Order to Avoid Complications in Mandibular Implantology: A Retrospective Study." BioMed Research International 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/8175284.

Full text
Abstract:
The aim of this retrospective radiological study was to evaluate the variability of the mandibular anatomy in the presence and absence of teeth and to consider how it could influence implant planning. 187 mandibular CT DentaScans were selected from our department archive according to the inclusion criteria. The axial height, vertical height, angulation of the bone crest, and the bone available for ideal implant placement were measured. The analysis of the data shows that the mandible contour presents a constant degree of angulation. The variation of angulation in the absence of teeth was statistically significant only in the region between the canine and the first premolar and in that between the second premolar and the first molar. The difference between the crest height and the available distance to place the implant was greater in the region of the second molar while in the other regions the implant planning was made complex by postextraction resorption. Alveolar bone resorption after tooth loss can be considered as a risk factor for lingual cortical perforation during the insertion of an implant. To avoid potential intra/postoperative complications, 3D radiographic examination is recommended in order to study the mandibular anatomy and identify the risk areas.
APA, Harvard, Vancouver, ISO, and other styles
34

Behnaz, Ebadian, Mosharraf Ramin, Samaneh Abbasi, Memar Ardestani Pouya, and Farzin Mahmood. "The effect of implant angulation and splinting on stress distribution in implant body and supporting bone: A finite element analysis." European Journal of Dentistry 09, no. 03 (July 2015): 311–18. http://dx.doi.org/10.4103/1305-7456.163235.

Full text
Abstract:
ABSTRACT Objective: The aim of this study was to investigate the influence of implant crown splinting and the use of angulated abutment on stress distribution in implant body and surrounding bone by three-dimensional finite element analysis. Materials and Methods: For this study, three models with two implants at the site of mandibular right second premolar and first molar were designed (1): Both implants, parallel to adjacent teeth, with straight abutments (2): Anterior implant with 15 mesial angulations and posterior implant were placed parallel to adjacent tooth, (3): Both implants with 15 mesial angulations and parallel to each other with 15° angulated abutments. Restorations were modeled in two shapes (splinted and nonsplinted). Loading in tripod manner as each point 50 N and totally 300 N was applied. Stress distribution in relation to splinting or nonsplinting restorations and angulations was done with ABAQUS6.13. Results: Splinting the restorations in all situations, led to lower stresses in all implant bodies, cortical bone and spongy bone except for the spongy bone around angulated first molar. Angulated implant in nonsplinted restoration cause lower stresses in implant body and bone but in splinted models more stresses were seen in implant body in comparison with straight abutment (model 2). Stresses in nonsplinted and splinted restorations in cortical bone of angulated molar region were more than what was observed in straight molar implant (model 3). Conclusion: Implant restorations splinting lead to a better distribution of stresses in implant bodies and bone in comparison with nonsplinted restorations, especially when the load is applied off center to implant body. Angulations of implant can reduce stresses when the application of the load is in the same direction as the implant angulation.
APA, Harvard, Vancouver, ISO, and other styles
35

Zaman, Mahmud Uz, Naif Salem Almutairi, Mohammed Abdulrahman Alnashwan, Shabab Mohammed Albogami, Nawaf Masad Alkhammash, and Mohammad Khursheed Alam. "Pattern of Mandibular Third Molar Impaction in Nonsyndromic 17760 Patients: A Retrospective Study among Saudi Population in Central Region, Saudi Arabia." BioMed Research International 2021 (August 26, 2021): 1–8. http://dx.doi.org/10.1155/2021/1880750.

Full text
Abstract:
The objective of this study was to study the incidence of type of impaction of mandibular third molars based on the classifications of Pell and Gregory and Winter, which included angulation of the tooth and level of the occlusal surface of the third molar with respect to the second molar, respectively, in a sample of Saudi population in central region. In this retrospective study, orthopantomograms (OPGs) of 17760 patients were examined, who were reported by the Dental University Hospital (DUH) at King Saud University, Riyadh, Saudi Arabia, between the years 2016 and 2020. Out of 17760 radiographs, 2187 (12.31%) patients presented with at least one impacted third molar. Out of which, 1337 (7.52%) patients had bilateral impaction and 850 (4.78%) patients had unilateral impaction ( p < 0.001 ). No gender predominance was noted in the impaction status ( p > 0.05 ). In bilateral impaction, 671 were male (50.2%) and 666 were female (49.8%). Among unilateral impaction, 394 (46.4%) were male and 456 (53.6%) were female. Mesioangular angulation was the most common pattern of impaction (65%) followed by vertical angulation in both bilateral and unilateral impactions. Level A impaction was found to be highest in both bilateral and unilateral impactions which are 48.02% and 54.0%, respectively ( p < 0.05 ). Our study highlights mesioangular impaction and level “A” as the most frequently encountered angulation and level of impaction in impacted teeth. This study result provides us useful data regarding the radiographic status of mandibular third molars in the population of Saudi Arabia.
APA, Harvard, Vancouver, ISO, and other styles
36

Bonardi, João Paulo, Gustavo Antonio Corrêa Momesso, Vathierre Nunes de Lima, Anderson Maikon de Souza Santos, Barbara Ribeiro Rios, Erik Neiva Ribeiro de Carvalho Reis, Leonardo de Freitas Silva, Eduardo Hochuli Vieira, Joel Ferreira Santiago Júnior, and Leonardo Perez Faverani. "Etiological factors for mandibular fractures in transoperative period of tooth extraction: systematic review." Research, Society and Development 9, no. 9 (September 5, 2020): e721997856. http://dx.doi.org/10.33448/rsd-v9i9.7856.

Full text
Abstract:
Objectives: to analyze the possible etiological factors associated with mandibular fractures occurring during tooth extractions. Methods the following data were collected: sex, age, the extracted tooth, tooth classification, angulation, level of bone impaction, pathological association, recognized technical errors, instruments used at the time of the fracture, and the surgeon’s experience and specialization, if applicable. An electronic search of the following databases was performed: PubMed/Medline, Lilacs, Embase, and Scopus. The data were tabulated and analyzed using the Chi-square test, a P-value less than 0.05 was considered significant. Results: a total of 80 cases were selected. Sex and age were not statistically significant (P>0.05). The teeth most associated with fractures were the mandibular third molars; however, the location was not significant. Pell & Gregory classes II, B, C, mesio-angular teeth, partial bone impaction, teeth related to pathological process, application of excessive strength, extractions with elevators, and non-specialists showed greater association with mandibular fractures during transoperative time (P<0.05).
APA, Harvard, Vancouver, ISO, and other styles
37

de Carvalho, Irla Karlinne Ferreira, and Anibal Henrique Barbosa Luna. "Spontaneous Eruption of Premolar Associated with a Dentigerous Cyst." Case Reports in Dentistry 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/5323978.

Full text
Abstract:
Dentigerous cyst (DC) is the second most common odontogenic cyst with greater incidence in young patients. It presents as a unilocular, asymptomatic radiolucency involving the crown of an impacted tooth, commonly noticed in X-rays to investigate absence, wrong tooth position, or delay in the chronology of eruption. Decompression/marsupialization (D/M) is the most implemented treatment, especially when preserving the tooth involved is advised. The aim of this study is to discuss the DC characteristics that contribute to spontaneous eruption of premolars, by reporting the case of a conservative treatment of DC. This eruption depends on factors such as age, angulation of inclusion, rate of root formation, depth of inclusion, and eruption space. This paper reports the case of a 10-year-old patient with a radiolucent lesion diagnosed as DC involving element 35, which erupted as a result of treatment. The patient was observed during 1 year and 6 months.
APA, Harvard, Vancouver, ISO, and other styles
38

Kartika, Dewi, Trelia Boel, and Sondang Pintauli. "ANALYSIS OF ROOT CANAL MORPHOLOGY OF INCISOR TEETH USING PERIAPICAL RADIOGRAPHY BISECTING TECHNIQUE AND CHANGE HORIZONTAL ANGULATION 30º IN SUB RACE PROTO AND DEUTRO MALAY." Dentika Dental Journal 21, no. 01 (July 1, 2018): 1–9. http://dx.doi.org/10.32734/dentika.v21i01.1107.

Full text
Abstract:
The incisor has a variation of root canal morphology, which can be assessed using periapical radiography. Periapical radiography with standard angulation often makes complicates the assessment of the root canal morphology that is branched off in buccal and lingual directions because the radiograph result of the root canal will appear superimposed. Therefore, it is necessary to change horizontal angulation to mesial or distal to help assess the superimposed root canal. Root canal morphology may vary by population. The population in Indonesia consists mainly of the sub-races of Proto and Deutro-Malay. The purpose of this study was to determine the difference of root canal morphology between maxillary and mandibular incisors; between the sub-races of Proto and Deutro-Malay; and between the right and left regions, using twice the radiation projection. This study was an analytical study with cross-sectional method using 55 subjects who come from three previous generations of Proto and Deutro-Malay. On each tooth were performed twice radiations periapical radiography, using standard angulation and altering horizontal angulation toward distal 30º. The results showed that in Proto-Melayu, for maxillary central incisors maxillary teeth were obtained type I (99.1%) and III (0.9%) Vertucci, and maxillary lateral incisors were obtained type I Vertucci (100%). In mandibular central incisors were obtained type I (90%), II (3.6%), III (2.7%) Vertucci and IV Gulabivala (3.6%), and mandibular lateral incisors were obtained type I (87.3 %), II (1.8%), III (7.3%) Vertucci and type IV Gulabivala (3.6%). In Deutro-Malay, maxillary central incisors were obtained 100% Vertucci type I and maxillary lateral incisors were obtained type I (99.1%) and II (0.9%). In mandibular central incisors were obtained type I (85.5%), III (11.8%) Vertucci, IV Gulabivala (1.8%), and other types 1-2-1-2-1 (0.9%), and mandibular lateral incisors were obtained by type I (81.8%) and III (18.2%) Vertucci. The result of chi-square analysis showed there were no significant differences of root canal morphology of maxillary insicors tooth between Proto and Deutro-Malay and between right and left region (p> 0,05), but there were significant differences of root canal morphology between maxillary and mandibular incisors and root canal morphology of the mandibular incisor between Proto and Deutro-Malay (p <0.05). In conclusion, maxillary and mandibular incisors of Proto and Deutro-Malay sub-races have variations in root canal configuration and there were differences found in the mandibular incisors.
APA, Harvard, Vancouver, ISO, and other styles
39

Sánchez, Silvia Barrientos, Adriana Rodríguez Ciodaro, David Martínez Laverde, and Alejandro Curan Cantoral. "The prevalence and characterization of implant-related findings in panoramic radiographs." Imaging and Radiation Research 5, no. 1 (November 21, 2004): 24. http://dx.doi.org/10.24294/irr.v4i1.1732.

Full text
Abstract:
Introduction: In Colombia, the last oral health study showed that about 70% of the population has partial edentulism while 5.2% will have lost all their teeth between the age of 65 and 79. Rehabilitation with implants is an increasingly used option, which requires clinical and radiographic follow-up. Panoramic radiography is a low-cost option, in which it is possible to observe areas of bone loss, mesiodistal angulation of the implant, relationship with anatomical structures and lesions suggestive of peri-implantitis. Reports and analysis of relevant data on radiographic findings associated with dental implants are required to determine the risk factors for their success in patients who use them. Objective: To determine the prevalence and characterize the findings associated with osseointegration implants in panoramic radiographs. Methods: A descriptive cross-sectional observational study was carried out with 10,000 digital panoramic radiographs selected by convenience from radiological centers in the city of Bogota, Colombia, of which 543 corresponded to the sample analyzed for the presence of implants. The following were evaluated for each implant: location, position, angulation and distances to adjacent structures, using the Clínicalview® program (Orthopantomograph OP200D, Instrumentarium, USA). Results: The frequency of radiographs with implants was 5.43% with a total of 1,791 implants, with an average of 3.2 per radiograph. They were found in greater proportion in the upper jaw with a supracrestal location and an angulation of 10.3 degrees. 32% had implant/tooth or implant/implant distances that were less than optimal. 40.9% were restored and 1.2% showed lesions compatible with periimplantitis. Conclusions: A high percentage of the implants reviewed have a risk factor that affects their long-term viability, either due to angulation, supracrestal or crestal position, proximity to teeth or other implants, or because they are not restorable.
APA, Harvard, Vancouver, ISO, and other styles
40

Fuma, Asuka, Etsuko Motegi, Hiroko Fukagawa, Mayumi Nomura, Masataka Kano, Kenji Sueishi, and Shigeru Okano. "Mesio-distal Tooth Angulation in Elderly with Many Remaining Teeth Observed by 3-D Imaging." Bulletin of Tokyo Dental College 51, no. 2 (2010): 57–64. http://dx.doi.org/10.2209/tdcpublication.51.57.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Navarro, Joana, Maria Cavaller, Estela Luque, Maria Luisa Tobella, and Alejandro Rivera. "Dental anomaly pattern (DAP): Agenesis of mandibular second premolar, distal angulation of its antimere and delayed tooth formation." Angle Orthodontist 84, no. 1 (July 24, 2013): 24–29. http://dx.doi.org/10.2319/030513-183.1.

Full text
Abstract:
ABSTRACT Objective: To test the null hypotheses that children with unilateral agenesis of the mandibular second premolar (MnP2) do not show (1) greater distal angulation of the unerupted antimere and (2) delayed tooth formation compared with children without agenesis. Materials and Methods: Panoramic radiographs of 38 patients with unilateral aplasia of MnP2 were retrospectively examined and compared to a non-agenesic control group of 82 patients. Ages ranged from 8 to 15 years. Contralateral mandibular deciduous second molars were present for all participants. Each unerupted MnP2 was traced, and its developmental stage and angulation were recorded (measured with the distal angle and the premolar-molar angle). Dental age was evaluated using the Haavikko method. Student's t-test was performed to identify significant differences between the compared groups. The significance level for statistical testing was set at P &lt; .05. Results: The results indicated a 9.5° decrease in the distal angle and a 13.2° increase in the premolar-molar angle for the unerupted MnP2 in the agenesis sample. This was a highly statistically significant difference (P &lt; .001 and P &lt; .0001, respectively) compared with the MnP2 inclinations in the control sample. The delay in dental age was significantly greater in patients with agenesis (2.1 years) compared with the delay in the control group (1.5 years) (P &lt; .001). Conclusion: Both null hypotheses are rejected. The results of this study statistically support the hypothesis that aplasia of MnP2, distally displaced MnP2s, and delayed tooth formation are part of a genetically related pattern of dental anomalies.
APA, Harvard, Vancouver, ISO, and other styles
42

Kaur, Pushappreet. "Prevalence of mandibular third molar impaction pattern in a private dental clinic of Sultanpur Lodhi." International Journal of Health 3, no. 2 (September 20, 2015): 47. http://dx.doi.org/10.14419/ijh.v3i2.5173.

Full text
Abstract:
<p><strong>Background:</strong> Mandibular third molar is the most commonly impacted tooth, and its removal is a frequently performed dentoalveolar procedure. It is important to know the prevalence rate in a particular community.</p><p><strong>Objective:</strong> This article aims at evaluation of angulation, ramus relationship and depth of impacted mandibular third molars among patients visiting a private dental clinic in Sultanpur Lodhi.</p><p><strong>Methodology:</strong> 150 patients presenting with 228 cases of lower third molar impaction were included within this study. IOPAR and where necessary, OPG was used for radiographic assessment. Age, sex and tooth number were recorded in each patient on a specially designed performa. Angulation was determined using winter’s method whereas assessment of ramus relationship and depth was done using Pell and Gregory's method.</p><p><strong>Results and Conclusion: </strong>The age of patients ranged from 21-43 years with mean age of 26.6 years. Males showed preponderance to mandibular M3 impaction (54%) in our study, and right side was found more frequently involved (53%). Radiographic assessment revealed that mesioangular impaction (45.2%) was the most prevalent angular pattern followed by vertical, distoangular and horizontal types, and Class 2 Position A (29.4%) most common and Class 1 Position C the least common type of impaction depth and ramus relationship.</p>
APA, Harvard, Vancouver, ISO, and other styles
43

Gaêta-Araujo, Hugo, Matheus Bronetti da Silva, Camila Tirapelli, Deborah Queiroz Freitas, and Christiano de Oliveira-Santos. "Detection of the gubernacular canal and its attachment to the dental follicle may indicate an abnormal eruption status." Angle Orthodontist 89, no. 5 (March 11, 2019): 781–87. http://dx.doi.org/10.2319/090518-651.1.

Full text
Abstract:
ABSTRACT Objectives: To evaluate and compare the detection of gubernacular canals (GC) and their characteristics in normal and abnormal tooth eruption. Materials and Methods: Patients with unerupted teeth were classified according to sex and age. Each tooth was classified according to dental group, eruption status, formation status, angulation, and GC detection. The opening of the GC in the alveolar crest and the attachment sites in relation to the dental follicle were assessed. Data were analyzed by the chi-square and Kruskal-Wallis tests, with a significance level of 5%. Results: Cone-beam computed tomography scans of 159 patients were evaluated. The final sample (N = 598) consisted of 423 teeth with normal eruption, 140 impacted teeth, and 35 teeth with delayed eruption. The overall detection rate of GC was 90.6%. These rates were 94.1%, 87.1%, and 62.9% for normal eruption, impacted teeth, and delayed eruption, respectively. GC detection rates were higher in the early stages of tooth formation in normal tooth eruption and in impacted teeth. The rate of GC detection was even lower in delayed teeth when they were angulated. Unusual attachment sites of the GC to the dental follicle were associated with abnormal eruption status. Conclusions: The results of the present study suggest that GC characteristics may indicate an abnormal eruption status.
APA, Harvard, Vancouver, ISO, and other styles
44

Omar, Aisyah, Muhammad Ikman Ishak, Muhamad Noor Harun, Eshamsul Sulaiman, and Noor Hayaty Abu Kasim. "Effects of Different Angulation Placement of Mini-Implant in Orthodontic." Applied Mechanics and Materials 121-126 (October 2011): 1214–19. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1214.

Full text
Abstract:
Orthodontic is one of the treatments in dentistry field which concerned on malocclusion treatments such as improper bites, tooth irregularity and disproportionate jaw relationships. The mini-implant (OMI) is one of the components used in the orthodontic treatment, besides braces and spring. The application of OMI has been well accepted in orthodontic treatment. However, one of the main factors of OMI failures is the implant insertion procedure in which the clinician find it difficult to obtain the best angle to insert the OMI. Therefore, this study aims to evaluate stress in an OMI and bones using the finite element analysis (FEA) with variations of insertion angles and to identify their optimal angle for the implant placement. The three dimensional (3D) model of a left maxillary posterior bone section was constructed based on CT image dataset. That 3D model consists of cortical bone, cancellous bone, second premolar, first molar and second molar teeth. The 3D model of OMI was placed between root of second premolar and first molar teeth. The OMI was simulated with seven different angles of insertions: 30˚, 40˚, 50˚, 60˚, 70˚, 80˚ and 90˚. Within the seven different insertion angles, the results showed that the increase of insertion angle reduced the maximum equivalent von Mises stress in cortical bone, cancellous bone and OMI. Based on this FEA study, the optimal angle placement of OMI is when the implant positioned at vertical angle (90˚) to the bone surface.
APA, Harvard, Vancouver, ISO, and other styles
45

Afridi, Sonia Umar, Najma Baseer, Zubair Durrani, Muhammad Ibrahim Afridi, and Shahida Jehan. "ASSOCIATION BETWEEN ANGULATION OF MANDIBULAR THIRD MOLAR IMPACTIONS WITH FACIAL SKELETAL TYPES AND CEPHALOMETRIC LANDMARKS." KHYBER MEDICAL UNIVERSITY JOURNAL 14, no. 1 (March 31, 2022): 47–55. http://dx.doi.org/10.35845/kmuj.2022.22111.

Full text
Abstract:
OBJECTIVE: To determine the association of impacted mandibular third molar with skeletal facial types and different anatomical and cephalometric landmarks. METHODS: This cross-sectional study was conducted at Rehman College of Dentistry and Khyber College of Dentistry, Peshawar, Pakistan from October to December 2020. Panoramic and lateral cephalometric radiographs of 800 patients (aged 22-35 years) were retrieved from the records. Third molar impaction was classified by Winter’s classification using IC Measure software. The skeletal facial type was determined by measuring Point A Nasion Point B angle using Viewbox software. An association of third molar impaction with skeletal facial types, cephalometric and anatomical variables was evaluated. RESULTS: The most common mandibular tooth impactions type was Mesioangular impaction (81.3%) and skeletal facial type was skeletal class-I (47.5%). Comparative analysis among different impaction types using One-way ANOVA showed that although these impaction types did not differ significantly in terms of skeletal facies (p=0.07), significant difference in terms of age (p=0.028), Maxillary Mandibular Plane Angle (MMPA) (p=0.007), depth (p=0.000), ramus relation (p=0.000) and inferior dental nerve (ID) canal (p=0.001) were observed. ID canal was found to be positively but weakly correlated (r=0.2) with impaction types. Contrariwise, depth and ramus relation showed moderately negative correlation (r=-0.40 and r=-0.30, respectively) with impacted tooth angulations. CONCLUSION: Although it is difficult to predict the impaction type in patient based on their skeletal facies, associations between other anatomical and cephalometric variables were observed which may help in predicting the degree of difficulty that may be encountered during the surgical procedures.
APA, Harvard, Vancouver, ISO, and other styles
46

Shpack, Nir, Moshe Davidovitch, Ofer Sarne, Narchos Panayi, and Alexander D. Vardimon. "Duration and Anchorage Management of Canine Retraction with Bodily Versus Tipping Mechanics." Angle Orthodontist 78, no. 1 (January 1, 2008): 95–100. http://dx.doi.org/10.2319/011707-24.1.

Full text
Abstract:
Abstract Objective: To compare tipping mechanics (TM) and bodily mechanics (BM) with respect to duration, angulation, and anchorage loss during canine retraction. Materials and Methods: TM and BM brackets were bonded to the upper right and left canines, respectively, of 14 subjects requiring maxillary first premolar extractions. The upper canines were retracted with variable nickel titanium closed coil springs (F = 0.50 or 0.75 N) attached posteriorly to a Nance anchorage appliance through the first molars. Panoramic radiographs and dental casts were taken at five time points. Canine angulation was assessed with custom metallic jigs inserted into the vertical slots of the canine brackets prior to radiographic exposure. Results: The canine crown contacted the second premolar after 102.2 ± 106 and 99.0 ± 80.0 days, and achieved root uprighting in 72.0 ± 31.3 and 37.2 ± 42.7 additional days with the TM and BM groups, respectively. Only the uprighting stage differed significantly between the two mechanics (P &lt; .05). During retraction, tooth angulation differed significantly (P &lt; .001) between the TM (6°) and BM (−0.8°) groups. Anchorage loss, as assessed by mesial molar movement, was 1.2 ± 0.3 mm and 1.4 ± 0.5 mm for the TM and BM groups, respectively. Conclusions: Bodily canine retraction occurred faster (38 days) than tipping due to a shorter duration of root uprighting. Anchorage loss (17%–20%) was similar for both retraction methods, ie, maximum anchorage could not be provided by the Nance appliance. Both TM and BM brackets had inadequate rotational control of the retracted canine.
APA, Harvard, Vancouver, ISO, and other styles
47

Shams, Salman, Syed Ghazanfar Hassan, Suneel Kumar Punjabi, and Soonhan Abdullah. "MOLAR CARIES;." Professional Medical Journal 24, no. 07 (July 3, 2017): 1088–92. http://dx.doi.org/10.29309/tpmj/2017.24.07.1083.

Full text
Abstract:
Objectives: To identify risk factor of distal surface caries on mandibular secondmolar associated with partially erupted mandibular third molar. Setting: The study wasconducted in the Department of Oral and Maxillofacial Surgery, Liaquat University HospitalJamshoro/Hyderabad from April 2013 to September2013. Methodology: Total 273 patientsof either gender with age 16-45 years had partially impacted mandibular third molar, wereincluded. Diagnosis was made on clinical as well as periapical view and OPG examination.Distance from CEJ of mesial surface of third molar to CEJ of distal surface of second molarwas measured in millimeters. Results: Results about association of caries with other variablesshowed that significant association of caries was observed with gender, winter classification,Pell Gregory (ramus), and angulation with p<0.01. The association of caries was also observedwith age and third molar site with p<0.05. The association was not significant with Pell Gregory(occlusal) and distance with p> 0.05. Conclusion: It was concluded with the results of thisstudy that there was an increased risk of developing dental caries in 2nd molar tooth at distalsurface with risk factor being partially erupted mandibular 3rd molar, mesioangular, class I, levelA, and angulation of more than 30 degrees.
APA, Harvard, Vancouver, ISO, and other styles
48

Satir, Samed, and Muhammed Hilmi Buyukcavus. "Comparison of the Angulation of the Unerupted Mandibular Second Premolar in Turkish Population with Tooth Agenesis." Turkish Journal of Orthodontics 32, no. 4 (December 31, 2019): 195–99. http://dx.doi.org/10.5152/turkjorthod.2019.18011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Bavbek, Andaç Barkin, Arife Dogan, and Murat Cavit Çehreli. "Biomechanics of implant-tooth supported prostheses: effects of mesiodistal implant angulation and mode of prosthesis connection." Journal of Applied Biomaterials & Biomechanics 9, no. 2 (2011): 118–28. http://dx.doi.org/10.5301/jabb.2011.8565.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Maalhagh‐Fard, Ahmad, and Sherif Badr. "Fabricating a provisional restoration for a 2‐stage, single‐tooth implant with less than optimal angulation." Journal of Prosthodontics 10, no. 4 (December 2001): 234–36. http://dx.doi.org/10.1111/j.1532-849x.2001.00234.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography