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. 2016 Aug 31;11(8):e0162070.
doi: 10.1371/journal.pone.0162070. eCollection 2016.

Prevalence of Third Molar Agenesis: Associated Dental Anomalies in Non-Syndromic 5923 Patients

Mamun Khan Sujon  1 , Mohammad Khursheed Alam  1 , Shaifulizan Abdul Rahman  2
Affiliations

Prevalence of Third Molar Agenesis: Associated Dental Anomalies in Non-Syndromic 5923 Patients

Mamun Khan Sujon et al. PLoS One. .

Abstract

The aim of this study was to investigate the prevalence of third molar agenesis and other associated dental anomalies in Bangladeshi population and to investigate the relationship of other dental anomalies with the third molar presence/agenesis. A retrospective study was performed using panoramic radiographs of 5923 patients, who ranged in age from 10 to 50 years. All radiographs were analyzed by Planmeca Romexis® 3.0 software (Planmeca Oy, Helsinki, Finland). Pearson chi-square and one way ANOVA (Post Hoc) test were conducted. The prevalence of third molar agenesis was 38.4%. The frequency of third molar agenesis was significantly higher in females than males (p <0.025). Third molar agenesis was significantly more prevalent in maxilla as compared to mandible (p <0.007). The prevalence of other dental anomalies was 6.5%, among them hypodontia was 3.1%. Prevalence of third molar agenesis varies in different geographic region. Among the other dental anomalies hypodontia was more prevalent.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Distribution of subjects in total population with third molar agenesis and jaw involvement.
Fig 2
Fig 2. Distribution of agenesis according to side involvement.
Fig 3
Fig 3. Global distribution of prevalence of third molar Agenesis.
See this image and copyright information in PMC

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