Radiographic assessment of periodontal ligament visibility in mandibular third molars as a tool for defining the 18 year threshold among Indians

2020 ◽  
pp. 1-8
Author(s):  
Rutvi Shah ◽  
Punnya V. Angadi
Keyword(s):  
Periodontal Ligament ◽  
Third Molars ◽  
Radiographic Assessment ◽  
Mandibular Third Molars

scholarly journals Panoramic Radiographic Assessment of Agenesis of Mandibular Third Molars: A Hospital Based Study in Eastern Nepal

2019 ◽  
Vol 57 (217) ◽  
Author(s):  
Pragya Regmee ◽  
Jyotsna Rimal ◽  
Ichha Kumar Maharjan ◽  
Surya Raj Niraula
Keyword(s):  
Panoramic Radiograph ◽  
The Other ◽  
Third Molars ◽  
Radiographic Assessment ◽  
Review Committee ◽  
Oral Medicine ◽  
Chi Square ◽  
Institutional Review ◽  
Chi Square Test ◽  
Mandibular Third Molars

Introduction: Racial variation, genetic inheritance and various other factors can affect the jaw size and ultimately the tooth size and number. Studies for agenesis of mandibular third molars (M3s) have been carried out in various populations but data relating to these are not evident from most of the parts of Nepal. Hence, the objective of the present study is to determine the prevalence of agenesis among the population of patients visiting the Department of Oral Medicine and Radiology of this institute. The study also sought the odds of agenesis of M3 in one side when there was missing M3 on the other side of the mandible. Methods: This study was conducted after the approval from Institutional Review Committee of BPKIHS. Two hundred and eighty four patients (568 sites of M3, bilaterally), visiting the Department of Oral Medicine and Radiology were studied with Panoramic Radiograph to assess for agenesis of mandibular third molars, bilaterally. Percentage of agenesis was calculated and chi square test was applied where relevant. Odds ratio was also calculated. Results: Agenesis was seen in 28.7% of the participants. The Odds of M3 being missing on one side with concurrent missing M3 on the other side was 40.27 (Confidence Interval 19.34 to 83.87). Conclusions: Agenesis was highly prevalent in this study group. The likelihood of M3 being absent on one side, when there was concurrent missing M3 on the other side of mandible was also high.

scholarly journals Radiographic assessment of impacted mandibular third molars

2021 ◽  
Vol 7 (3) ◽  
pp. 94-98
Author(s):  
Pankaj Kukreja ◽  
Fahd Nasser Al Qahtani ◽  
Ahad Fahd Al Qahtani ◽  
Modi Fahd Al Qahtani ◽  
Majedah Fahd Al Qahtani ◽  
...  
Keyword(s):  
Mandibular Canal ◽  
Lingual Nerve ◽  
Structural Systems ◽  
Imaging Method ◽  
Third Molars ◽  
Radiographic Assessment ◽  
Lower Jaw ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars ◽  
Crown Roots

The surgical remedy of problems related to lower jaw 3 molars is related to common surgical risks like contamination, haemorrhage, pain and swelling. Certain unique risks are related with such surgery, specifically inferior alveolar and lingual nerve harm as these are adjacent vital structures. Risk assessment calls for an entire understanding of dental factors that can impact the care of these characteristic structures. Preoperative radiographic assessment warrants to provide data about the tooth itself, its encompassing bone, the neighbouring dentition, and related anatomical structural systems. Parameters that ought to be assessed are level of impaction, root formulations, angulation of the enamel, number of roots, root morphology, related pathology and, most importantly, the relation some of the crown/roots and the mandibular canal. An appropriate imaging method for 3 molars ought to display the complete 3rd molar and the mandibular canal below it. In this mini review, we elaborate on the generally used radiographic assessment methods of mandibular 3rd molars.

scholarly journals Prevalence of mandibular third molar impaction pattern in a private dental clinic of Sultanpur Lodhi

2015 ◽  
Vol 3 (2) ◽  
pp. 47
Author(s):  
Pushappreet Kaur
Keyword(s):  
Third Molar ◽  
Third Molars ◽  
Radiographic Assessment ◽  
Dental Clinic ◽  
Impacted Tooth ◽  
Mandibular Third Molar ◽  
Class 1 ◽  
Impacted Mandibular Third Molars ◽  
Tooth Number ◽  
Mandibular Third Molars

<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>

scholarly journals Pattern of Impacted Mandibular Third Molar Teeth in Rangpur Region, Bangladesh: A Radiological Evaluation

KYAMC Journal ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 8-13
Author(s):  
Md Rubayet Alam Prodhan ◽  
Md Shahidul Islam ◽  
Rifat Rezwana ◽  
Md Moynul Hasan
Keyword(s):  
Third Molar ◽  
Third Molars ◽  
Radiographic Assessment ◽  
Impacted Tooth ◽  
Panoramic Radiographs ◽  
Impacted Mandibular Third Molar ◽  
Mandibular Third Molar ◽  
Molar Teeth ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Background: Third molar is the most commonly impacted tooth in the oral cavity and accounts for large of all impactions. The most common complication in the extraction of the third mandibular molars is nerve and vessels damage. Therefore, thorough radiographic assessment is a necessary to avoid these surgical complications. Objective: The purpose of this study was to evaluate the frequency, angulation, depth of the impacted mandibular third molars and its relationship with ramus on radiographs. Materials and Methods: This study comprised 800 orthopantomograms (OPGs) of patients attending different dental clinics and hospitals in Rangpur region, Bangladesh between June 2014 to May 2015. Panoromic Radiographic assessment was carried out to evaluate the pattern of third molar impaction in terms of age, gender, angulation of impaction, level of eruption and available retromolar space using panoramic radiographs and Pell & Gregory classification. Results: A total of 314 radiographic third molar areas were found in this study, out of them 137 belong to male patients and 177 belong to the female patients. The mesio angular types of angulation was most prevalent (46%) whereas distoangular was rare (5%) in our study. In relation to anterior border of the ramus of mandible Level B 52% and Class II 59% were the most common pattern of impaction. The female tends to be dominant as compared to male & the maximum number (35%) of impacted third molars are found in an age group of 38 years and above. Conclusion: Panoramic radiographs can be used as reliable investigation for evaluation of impacted mandibular third molar. KYAMC Journal.2021;12(01): 08-13

scholarly journals Mandibular third molars as a risk factor for angle fractures: a retrospective study

2009 ◽  
Vol 8 (3) ◽  
pp. 237-240 ◽  
Author(s):  
K. Rajkumar ◽  
Sinha Ramen ◽  
Roy Chowdhury ◽  
P. K. Chattopadhyay
Keyword(s):  
Risk Factor ◽  
Retrospective Study ◽  
Third Molars ◽  
Mandibular Third Molars ◽  
Angle Fractures

scholarly journals Mesial Migration Effect on Root Morphology of Mandibular Third Molars

2007 ◽  
Vol 77 (1) ◽  
pp. 73-76 ◽  
Author(s):  
A. Altuğ Bıçakçı ◽  
Oral Sökücü ◽  
Hasan Babacan ◽  
H. Hüseyin Köşger
Keyword(s):  
Third Molar ◽  
Root Apex ◽  
Central Line ◽  
Occlusal Plane ◽  
Third Molars ◽  
Migration Effect ◽  
Mandibular Third Molar ◽  
Root Curvature ◽  
History Of ◽  
Mandibular Third Molars

Abstract Objective: To test the hypothesis that there is a relationship between forward mandibular third molar migration and root curvature of the mandibular third molars. Materials and Methods: The study is comprised of 64 patients who had a history of unilateral mandibular first molar extraction before 16 years of age with no other missing teeth or prosthetic restorations in the mandible. The extraction space was fully or partly closed. The mean remaining space was 1.1 ± 0.41 mm. The root angles for the mesial and distal roots of the mandibular third molars were measured on the panoramic radiographs by calculating the differences between the angle formed by the long axis drawn perpendicular to the occlusal plane of the crown of mandibular third molar and the central line of the lower one ninth of the root through the root apex. The differences between the extracted and nonextracted sides for mesial and distal roots were analyzed using a paired sample t-test. Results: Both mesial and distal roots were approximately 8° more vertical on the extraction sides than on the nonextraction sides. The differences were statistically significant. Conclusion: Mesial tooth migration of mandibular third molars reduces the amount of root curvature developing on this tooth.

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