Evaluation of the frequency of third molar agenesis according to different age groups

2020 ◽  
Author(s):  
Umut Pamukcu ◽  
Nebiha Gozde Ispir ◽  
Meryem Toraman Alkurt ◽  
Bulent Altunkaynak ◽  
Ilkay Peker
Keyword(s):  
Age Groups ◽  
Third Molar ◽  
Third Molar Agenesis

The relation between third molar agenesis and craniofacial morphology

2012 ◽  
Vol 42 (12) ◽  
pp. 51-64
Author(s):  
Nagwa Enany ◽  
Ahmed El-Kalza ◽  
Fatma El-Shikhy
Keyword(s):  
Third Molar ◽  
Craniofacial Morphology ◽  
Third Molar Agenesis

Inferior alveolar nerve block and third-molar agenesis

2013 ◽  
Vol 144 (4) ◽  
pp. 389-395 ◽  
Author(s):  
Jerry Swee ◽  
Anthony R. Silvestri ◽  
Matthew D. Finkelman ◽  
Alfred P. Rich ◽  
Stanley A. Alexander ◽  
...  
Keyword(s):  
Nerve Block ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Inferior Alveolar Nerve Block ◽  
Third Molar Agenesis

Age Related Prevalence of Pre-Eruptive Intracoronal Radiolucent Defects in the Permanent Dentition

2016 ◽  
Vol 40 (2) ◽  
pp. 103-106 ◽  
Author(s):  
Marina Umansky ◽  
Nili Tickotsky ◽  
Silvina Friedlander-Barenboim ◽  
Sarit Faibis ◽  
Moti Moskovitz
Keyword(s):  
Retrospective Study ◽  
Age Groups ◽  
Third Molar ◽  
Young Group ◽  
Young Age ◽  
Permanent Teeth ◽  
Significance Level ◽  
Adult Age ◽  
Age Related ◽  
Unerupted Teeth

Objective: The present study aimed to determine if the prevalence of pre-eruptive intracoronal radiolucent defects is higher for young age groups, in which there are more unerupted teeth. Study design: A retrospective study of panoramic and bitewing radiographs was conducted. An inclusion criterion was the presence of un-erupted permanent teeth with a formed and clearly visible crown. Age groups were: young (6–8 years), intermediate (9–12 years) and adults (13–53 years). Significance level was set at p≤0.05. Results: Thirteen (3.9%) pre-eruptive lesions were detected in 335 records. No lesions were found in the young group (7.4%), in the intermediate and adult age groups six and seven lesions were found, respectively. In most cases the pre-eruptive lesion was found in a third molar. Conclusion: The prevalence of pre-eruptive intracoronal lesions was not higher for young age groups. The prevalence of pre-eruptive intra coronal radiolucent lesions is 3.9%, irrespective of age.

scholarly journals Relationship between skeletal malocclusion and dental anomalies in Nepalese population

2019 ◽  
Vol 9 (1) ◽  
pp. 15-18
Author(s):  
Bashu Dev Pant ◽  
Anjana Rajbhandari ◽  
Resina Pradhan ◽  
Manju Bajracharya
Keyword(s):  
Third Molar ◽  
Class Ii ◽  
Class I ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Dental Anomalies ◽  
Chi Square ◽  
Skeletal Class ◽  
Skeletal Malocclusion ◽  
Third Molar Agenesis

Introduction: Teeth eruption is important for the development of alveolar process which increases vertical height of the face and third molar is the last tooth to erupt in the oral cavity after birth. The aim of this study was to determine relationship between skeletal malocclusion and dental anomalies in Nepalese population. Materials & Method: A sample of 170 patients with agenesis of at least one third molar was divided into four groups according to the third-molar agenesis pattern. Panoramic radiographs, lateral cephalograph and cast models were used to determine the skeletal malocclusion and associated dental anomalies. The Pearson chi-square test was used for stastical analysis. Result: Among 170 patients more than half of the patients were female with the average age being 18.15 ± 3.64 years. Majority of the patients had Class I skeletal malocclusion followed by Class II and III but on group wise comparison of patients with different skeletal patterns Class I skeletal malocclusion had highest prevalence of dental anomalies followed by Class III and Class II malocclusion. Conclusion: Prevalence of third-molar agenesis was more in skeletal class I malocclusion followed by class II and III but skeletal Class I malocclusions had more dental anomalies followed by class III and class II malocclusion.

scholarly journals Radiographic assessment of lower third molar eruption in different anteroposterior skeletal patterns and age-related groups

2014 ◽  
Vol 85 (4) ◽  
pp. 577-584 ◽  
Author(s):  
Aleksandar Jakovljevic ◽  
Emira Lazic ◽  
Ivan Soldatovic ◽  
Nenad Nedeljkovic ◽  
Miroslav Andric
Keyword(s):  
Logistic Regression ◽  
Age Groups ◽  
Third Molar ◽  
Width Ratio ◽  
Class Iii ◽  
Second Molar ◽  
Age Related ◽  
Mandibular Third Molar ◽  
Lateral Cephalograms ◽  
Third Molar Eruption

ABSTRACT Objective:  To analyze radiographic predictors for lower third molar eruption among subjects with different anteroposterior skeletal relations and of different age groups. Materials and Methods:  In total, 300 lower third molars were recorded on diagnostic digital orthopantomograms (DPTs) and lateral cephalograms (LCs). The radiographs were grouped according to sagittal intermaxillary angle (ANB), subject age, and level of lower third molar eruption. The DPT was used to analyze retromolar space, mesiodistal crown width, space/width ratio, third and second molar angulation (α, γ), third molar inclination (β), and gonion angle. The LC was used to determine ANB, angles of maxillar and mandibular prognathism (SNA, SNB), mandibular plane angle (SN/MP), and mandibular lengths. A logistic regression model was created using the statistically significant predictors. Results:  The logistic regression analysis revealed a statistically significant impact of β angle and distance between gonion and gnathion (Go-Gn) on the level of lower third molar eruption (P < .001 and P < .015, respectively). The retromolar space was significantly increased in the adult subgroup for all skeletal classes. The lower third molar impaction rate was significantly higher in the adult subgroup with the Class II (62.3%) compared with Class III subjects (31.7%; P < .013). Conclusion:  The most favorable values of linear and angular predictors of mandibular third molar eruption were measured in Class III subjects. For valid estimation of mandibular third molar eruption, certain linear and angular measures (β angle, Go-Gn), as well as the size of the retromolar space, need to be considered.

scholarly journals Third molar agenesis among children and youths from three major races of Malaysians

2012 ◽  
Vol 7 (3) ◽  
pp. 211-217 ◽  
Author(s):  
Jacob John ◽  
Phrabhakaran Nambiar ◽  
Shani Ann Mani ◽  
Nor Himazian Mohamed ◽  
Nur Fazwani Ahmad ◽  
...  
Keyword(s):  
Third Molar ◽  
Third Molar Agenesis

Relationship between tooth size and third molar agenesis

1974 ◽  
Vol 82 (8) ◽  
pp. 552-556 ◽  
Author(s):  
H. C. CHRISTENSEN ◽  
B. MELSEN
Keyword(s):  
Third Molar ◽  
Tooth Size ◽  
Third Molar Agenesis

scholarly journals Prevalence of Third Molar Agenesis in Patients – A Panoramic Retrospective Study

2021 ◽  
Vol 2 (2) ◽  
pp. 5-8
Author(s):  
Vivek Padmanabhan ◽  
Omar Khaled AR Abo Mostafa ◽  
Lama M. Kamel Rahhal
Keyword(s):  
Treatment Options ◽  
Third Molar ◽  
Tooth Germ ◽  
P Value ◽  
Chi Square ◽  
Dental Patients ◽  
Dental Tissues ◽  
Third Molar Agenesis ◽  
Chi Square Test ◽  
Congenitally Missing

Background/Purpose: Agenesis is found to be the most common dental anomaly affecting at least 25% of the population. Agenesis is an anomaly where the tooth germ fails to differentiate completely into dental tissues resulting in congenitally missing teeth. The aim of this study was to determine the prevalence of bilateral agenesis of mandibular second premolars. This study also reflects upon the treatment options available for the agenesis of mandibular second premolars. Materials and Methods: Bilateral agenesis was considered as agenesis and unilateral agenesis was excluded from the study. Orthopantamograms (OPGs) of 945 dental patients aged 6 years -30 years were examined for the agenesis of teeth. Descriptive statistics were used to describe the percentages and frequencies were calculated using chi square test and the level of significance was considered if p value was <0.05. Results: The prevalence of bilateral agenesis or congenitally missing mandibular second premolars were at 10.5%. Conclusions: The prevalence rates of bilateral agenesis or congenitally missing mandibular second premolars are more common in males than females. A well informed evidence based decision should be taken for the clinical management of the missing mandibular second premolars.

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