Dental age estimation based on imaging of lower third molars in Western Indian population

Abstract

The study aimed to determine age by assessing the discernibility of the periodontal ligament (PDL) and root canal (RC) on panoramic radiographs of mandibular third molars. In this retrospective study, 2000 panoramic radiographs of individuals aged between 16 to 40 were analysed, including both males and females. The radiographic discernibility of PDL and RC in mandibular third molars was assessed according to the study by Olze et al. which was categorised into four stages. At each stage, the minimum, maximum, and standard deviation were assessed. Statistical analysis was conducted to examine the relationship between age, sex, and PDL/RC stage. There was a notable disparity in the average age of individuals at different stages of PDL and RC. There was a considerable increase in the average age from PDL & RC stage 0 to stage 3. By considering the minimum and maximum values for each stage, individuals can be classified as being older than 17 years if they are in stage 1, and older than 20 years if they are in stages 2 and 3. These classifications are determined based on the combined results of the PDL and RC stages. The radiographic discernibility of PDL and RC can be utilised as a promising method to determine age in the western Indian population.