scholarly journals Dilated Odontoma Arising in the Mandibular Third Molar Germ: Report of a Case of an Unusual Lesion in an Uncommon Site

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2256
Author(s):  
Francesca Zara ◽  
Giacomo D’Angeli ◽  
Alessandro Corsi ◽  
Antonella Polimeni ◽  
Gian Luca Sfasciotti
Keyword(s):  
Third Molar ◽  
Enamel Organ ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Pathologic Findings ◽  
Independent Entity ◽  
Unusual Lesion ◽  
Differentiation Stage ◽  
Dens Invaginatus

Dilated odontoma is the most severe variant of dens invaginatus. It is extremely uncommon in the posterior mandible. It is thought to originate during the morpho-differentiation stage of dental development. However, its etiology and pathogenesis remain obscure. We report here the clinical and pathologic findings of an incidentally discovered dilated odontoma arising in the left third mandibular molar germ of an 11-year-old male and a review of the pertinent literature. As dilated odontoma is not established as an independent entity in the current WHO classification of odontogenic tumors and is the result of a well-established developmental anomaly of the tooth (that is, the invagination of the enamel organ into the dental papilla), it should be better identified as dilated dens invaginatus.

scholarly journals Study of Prevalence of Caries on Distal Side of Second Mandibular Molar Due To Impacted Mandibular Third Molar

2017 ◽  
Vol 3 (3) ◽  
Author(s):  
Fareedi Mukram Ali ◽  
Muzaffar Ali Khan ◽  
Ali Atiyah Derrbishi ◽  
Ghadeer Ahmed Al-Mughalis ◽  
Mahmoud Almasrahi ◽  
...  
Keyword(s):  
Third Molar ◽  
Impacted Mandibular Third Molar ◽  
Distal Side ◽  
Mandibular Third Molar ◽  
Mandibular Molar

scholarly journals Complication occurs after odontectomy of mandibular third molar

2012 ◽  
Vol 24 (2) ◽  
Author(s):  
Dicca Neldi Busra ◽  
Tis Karasutisna ◽  
Abel Tasman Yuza
Keyword(s):  
Medical Records ◽  
Age Groups ◽  
Third Molar ◽  
Secondary Data ◽  
Impacted Third Molar ◽  
Postoperative Control ◽  
Mandibular Third Molar ◽  
Minor Surgery ◽  
Descriptive Survey

Introduction: The average age for completely eruption of the mandibular third molar is age 20-25. The eruption of mandibular third molar sometimes prevented by several factors, caused this tooth becomes impacted. All impacted third molar should be removed with minor surgery, which called odontectomy. Several complications and complaint are accompanied with extraction of impacted third molar. The purpose of this study was to determine the prevalence rate of complications post-odontectomy of mandibular third molar, based on genders, age of the patients, the classification of impactions, and the day of postoperative control. Methods: The characteristics of this study was a descriptive survey that collected the secondary data from the medical records, which used the research papers to collect the data. Results: The results of this study show that there are 545 medical records of the patient included to the study, 62.7% complications occur in women. Complications often occur in age groups over 30 years (56.3%). Conclusion: Most of complications occur in C position in class I, II, and III of Pell and Gregory classification. The most complications is oedem on the first day after surgery (43.1%) and on the day of sutures opened (12.3%).

scholarly journals Prevalence of impacted mandibular third molars among patients attending the dentomaxillofacial radiology clinic

2013 ◽  
Vol 25 (1) ◽  
Author(s):  
Sanjit Singh Munjit Singh ◽  
Suhardjo Sitam ◽  
Belly Sam
Keyword(s):  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
Panoramic Radiographs ◽  
Descriptive Research ◽  
The Third ◽  
Mandibular Third Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Introduction: The third molar is undoubtedly the most variable tooth in the human dentition, and also the most common tooth to become impacted due to it being the last tooth to erupt into the dental arch The aim of research is to obtain the prevalence of the mandibular third molar (M3) impaction among the patients attending the Radiology Clinic. Methods: The type of research conducted was a descriptive research. The sampling was purposive, drawn from a population of 1451 digital panoramic radiographs taken from January – December in the year 2010, of which 392 samples were included in the survey, with patient ages ranging between 18 – 59 years at time of exposure. The position of the M3’s was assessed using the Pell and Gregory and, Winter’s impaction classification. Results: The prevalence of impacted mandibular M3’s in this study is 76.8% overall. Of the impacted mandibular M3’s present, 76.1% were bilateral impactions and of these bilateral impactions 50.7% are similar in impaction classification. Of the mandibular M3’s examined, 40.1% are in a vertical angulation, 33.3% mesioangular, 23.5% horizontal and 3.1% distoangular. The three most common types of impaction according to the Pell and Gregory classification are IIB at 38.5%, IA at 36.8% and IIA at 18.8%. Conclusion: Prevalence of  mandibular third molar of the patients attending the Radiology Clinic is 76.8%.

scholarly journals Comparison of Digital OPG and CBCT in Assessment of Risk Factors Associated with Inferior Nerve Injury during Mandibular Third Molar Surgery

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2282
Author(s):  
Rakhi Issrani ◽  
Namdeo Prabhu ◽  
Mohammed Sghaireen ◽  
Hasna Rasheed Alshubrmi ◽  
Amal Mohamed Alanazi ◽  
...  
Keyword(s):  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Third Molars ◽  
Factors Associated ◽  
Impacted Third Molar ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Background: Pre-operative radiographic assessment of the anatomical relationship between the roots of the mandibular third molar and the inferior alveolar nerve (IAN) is a must to minimize the risk of IAN injury during surgery. Objectives: To compare the radiographic signs of digital orthopantomogram (OPG) and cone-beam computed tomography (CBCT). An additional objective was to assess the cortex status between the mandibular canal and third molar on CBCT images in relation to the demographic characteristics, region (right or left side), and angulation of mandibular molar. Methodology: In this retrospective study, a total of 350 impacted mandibular third molars with a close relationship between the inferior alveolar canal (IAC) and impacted mandibular third molars on digital OPG were further referred for CBCT imaging for assessment of the position of the mandibular canal. The study was conducted between August 2018 and February 2020. Digital OPGs were evaluated for radiographic signs like interruption of the mandibular canal wall, darkening of the roots, diversion of the mandibular canal, and narrowing of the mandibular canal. The age and sex of patients, site of impacted third molar, Winter’s classification of mandibular third molar, position of IAC relative to impacted molar, and the radiographic markers of OPG were assessed for cortical integrity using CBCT. Chi square testing was applied to study the values of difference and binomial logistic regression was done to assess the factors associated with cortication. Statistical significance was set at p ≤ 0.05. Results: Among 350 patients, 207 (59.1%) were male and 143 (40.9%) were female with a mean age of 36.8 years. The most common OPG sign was interruption of white line, seen in 179 (51.1%) cases. In total, 246 cases (70.3%) showed an absence of canal cortication between the mandibular canal and the impacted third molar on CBCT images. Cortication was observed in all cases with a combination of panoramic signs which was statistically significant (p = 0.047). Cortication was observed in 85 (50.6%) cases where IAC was positioned on the buccal side, 11 (16.9%) in cases of inferiorly positioned IAC, and just 8 (7.6%) for cases of lingually positioned IAC which was statistically significant (p = 0.003). Statistically insignificant (p > 0.05) results were noted for cortex status in CBCT images with regards to the age, sex, site, and angulation of impacted third molars. Conclusion: CBCT imaging is highly recommended for those cases where diversion of the mandibular canal is observed on OPG and when the roots are present between canals.

scholarly journals Radiographic imaging evaluation of mandibular third molars among patients presenting to private dental college in South India

2020 ◽  
Vol 11 (3) ◽  
pp. 4884-4888
Author(s):  
Jones Jayabalan ◽  
Jayakeerthana S ◽  
Muthusekhar MR
Keyword(s):  
Third Molar ◽  
Third Molars ◽  
Imaging Evaluation ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Impacted Mandibular Third Molars ◽  
Study Population ◽  
Frequent Site ◽  
Reduced Space ◽  
Mandibular Third Molars

The most common reason for mandibular third molar impaction is due to reduced space between the distal part of the second mandibular molar and the anterior border of the ascending ramus of the lower jaw. The tooth that is impacted is commonly asymptomatic, or sometimes present with various pathological conditions causing pain and swelling as well as pus discharge. In our current study, we have assessed the patterns of Mandibular third molar impactions using the Orthopantomogram (OPG’s). OPG’s of 150 patients (91 female and 59 male) who were between 18-25 years of age and had impacted mandibular third molars was assessed for gender, the region having the highest frequency of impaction and the fashion of impaction of the mandibular third molars. The study shows Bilateral impaction was more commonly seen in 26.66% of the study population and case of unilateral impactions the most frequent site is particularly in left side 23.33% and in right 19.33% unilateral impactions. The mesioangular pattern of impaction was more common in both male and female and was followed by distoangular, vertical and horizontal patterns.The study showed that there was no gender bias in the presence of impacted mandibular third molars and that the mesioangular pattern of impaction was more common.

scholarly journals PREDICTION OF EXTRACTION DIFFICULTY FOR INFERIOR THIRD MOLAR

InterConf ◽  
2021 ◽  
pp. 273-278
Author(s):  
Gabriela Motelica ◽  
Nicolae Chele ◽  
Sergiu Beliniuc
Keyword(s):  
Medical Records ◽  
Third Molar ◽  
Radiographic Examination ◽  
Common Complication ◽  
Correct Position ◽  
Anatomical Structures ◽  
Second Molar ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
The University

Inferior third molar impaction remains an actual topic of discussion in modern dentistry due to the frequent complications and treatment contraindications. According to Rock and Elsey inferior third mandibular molar impaction occurs in 73% of young people. Many theories of impaction of inferior 3rd molar have been proposed, but the most popular is the insufficient development of retromolar space. Some authors claim that M3 extraction should only be performed when complications may occur, others say that M3 should be extracted if there are no contraindications, but Martin Kunkel is the advocate of the prophylactic extraction of the inferior third molar. In order to achieve the proposed goal, the frequency of impaction of mandibular third molar and their relationship with neighboring anatomical structures was evaluated. There were statistically processed data of medical records and radiographic examination. This study was made based on 320 patients treated in the University Dental Clinic nr.2, SUMPh ,,Nicolae Testemițanu”. Of these, 147 patients were selected: 58 patients with impacted inferior 3rd molar and 89 patients with inferior 3rd molar apparently erupted in the correct position. The most common complication caused by M3 was pericoronitis, followed by second molar caries.

scholarly journals DISSECTION AND DETAILED ANATOMY OF AN IMPACTED MANDIBULAR THIRD MOLAR. Disección y anatomía detallada de un tercer molar mandibular impactado

2016 ◽  
Vol 5 (3) ◽  
pp. 229-234
Author(s):  
Radu C Ciuluvic? ◽  
Mugurel C Rusu
Keyword(s):  
Surgical Procedures ◽  
Adult Male ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Lingual Nerve ◽  
Impacted Tooth ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Male Cadaver ◽  
Mylohyoid Nerve

Los trastornos neurosensoriales del nervio alveolar inferior (IAN) o el nervio lingual (LN) se reportan comúnmente en casos del tercer molar inferior impactado. Los casos están documentados usualmente mediante estudios imagenológicos. Pruebas de disección de la anatomía detallada en estos casos son raras, sino inexistentes. Se informa aquí sobre un estudio de disección en un caso de un tercer molar inferior impactado (ángulo bucal), en un cadáver de un hombre adulto, 68 años de edad. Más allá de las “clásicas” relaciones del diente impactado con el IAN y el LN, también han sido encontradas estrechas relaciones con las ramas de LN, el ganglio de debajo de la mandíbula, el nervio milohioideo (MN) y la anastomosis del LN y MN. Estos detalles anatómicos deben considerarse también cuando tales casos están documentados en pacientes antes de procedimientos quirúrgicos. Los efectos de los daños del ganglio de debajo de la mandíbula deben ser analizados más.  Neurosensory disturbances of the inferior alveolar nerve (IAN), or the lingual nerve (LN), are commonly reported in cases of third mandibular molar impaction. Cases are usually documented by use of imagistic methods. Dissection proofs of the detailed anatomy in such cases are rare, if not absent. It is reported here a dissection study in a case of an impacted (bucco-angular) third mandibular molar, in an adult male cadaver, 68 years old. Beyond the “classical” relations of the impacted tooth with the IAN and the LN, close relations were also found with the LN branches, submandibular ganglion, mylohyoid nerve (MN), and the anastomosis of the LN and the MN. These anatomical details should be also considered when such cases are documented in patients before surgical procedures. Effects of the submandibular ganglion damage should be further explored.

scholarly journals Association between third mandibular molar impaction and degree of root development in adolescents

2012 ◽  
Vol 83 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Søren Rødsgaard Lauesen ◽  
Jens O. Andreasen ◽  
Thomas Alexander Gerds ◽  
Søren Steno Ahrensburg Christensen ◽  
Mette Borum ◽  
...  
Keyword(s):  
Growth Rate ◽  
Root Development ◽  
Odds Ratio ◽  
Third Molar ◽  
Development Stage ◽  
Third Molars ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Oral And Maxillofacial Surgeon ◽  
Molar Region

Abstract Objective: To compare the root development and the growth rate of the mandibular third molar (M3 inf) in individuals where the M3 inf erupted vs individuals exhibiting M3 inf impaction. Materials and Methods: Serial standardized intraoral radiographs (Eggen technique) were taken annually of the mandibular third molar region from 132 subjects (71 male and 61 female) from 15 to 20 years of age. Based on the films, 264 lower third molars were classified into an eruption and an impaction group. Root development was recorded according to a quantitative method described by Haavikko (1970), and the eruption status was analyzed using logistic regression. Results: In total, 155 (59%) of the M3 inf erupted, and 109 (41%) were impacted at age 20. In 44 (33%) patients both M3 inf were impacted, in 21 (16%) patients one tooth was erupted and the contralateral tooth impacted, and in 67 (51%) patients both M3 inf were erupted. The more mature a tooth was at age 15, the higher was the probability of eruption (odds ratio: 3.89, P < .001). The growth rate of the root development stage was statistically significantly associated with the probability of eruption (odds ratio: 10.50, P  =  .041). Conclusions: Delayed mandibular third molar root development is associated with impaction. Radiographs taken at age 15 may predict the risk of impaction and thereby guide decision making for the orthodontist or the oral and maxillofacial surgeon.

scholarly journals Variant root morphology of third mandibular molar in normal and impacted teeth

2017 ◽  
Vol 6 (3) ◽  
pp. 1052-1061
Author(s):  
Isaac Kipyator Bokindo ◽  
Fawzia Butt ◽  
Francis Macigo
Keyword(s):  
Root Morphology ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Impacted Teeth ◽  
The Third ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Panoramic Views

The mandibular third molar poses a challenge to dental surgeons due to it’s unpredictable morphology which leads to increased difficulty during its extraction. The root morphology of the third molar is considered to be the most variable in the human dentition. The study aims to document these variations which will be useful while undertaking procedures on the third molar. Three hundred and fifty nine panoramic views of the mandible were obtained from the Radiology division for patients seeking treatment in the School of Dental Sciences since 2010. The prevalence of third molar impaction was found to be 27%, with mesioangular being the commonest at 21.9% using the Winter’s classification. Dilacerations of roots was recorded at 44%, with a ratio of normal to dilacerated of 1:1 seen in impacted teeth while, non impacted teeth had a ratio of 1.3:1. Most teeth had 2 roots (85.5%), with one root seen in 12.1%. Partially fused roots was also observed in 2.4% of cases with only one case showing three roots. The total mean distance from the tips of roots to the mandibular canal was -0.5mm. Higher negative means of -1.5mm was recorded in impacted teeth than in normal teeth (-0.2mm). Teeth with dilacerated roots also showed closer proximity to mandibular canal than straight rooted teeth. The left side of the jaw also showed higher negative means. Present findings suggest that careful considerations should be made on impacted teeth. In addition to the type of impaction, proximity to the inferior alveolar nerve (IAN), number of roots and shape of the roots should be assessed. Similar considerations should also be made to non impacted teeth due to the high unpredictability observed in root morphology.Keywords: Third molar, root morphology, impaction

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