Estimation of Dental Age by Mandibular Third Molar Through Digital Orthopantomogram Using Modified Demirjian Method In South Indian Population Visiting A Dental College- A Retrospective Study

International Journal of Forensic Odontology Pub Date : 2023-12-02 DOI:10.56501/intjforensicodontol.v8i2.947

Nisha Veluchamy, Narendran Achuthan, Durgadevi Pancharethinam

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Abstract

Aim: The aim of this study was to evaluate the applicability of Demirjian’s method for dental age assessment in a group of South Indian population and to develop an age-predictive equation suitable for the studied group. Subjects and methods: In this retrospective, blind, cross-sectional study, 120 Digital Orthopantomograms were selected from the archived medical files of patients attending Dental College and evaluated to estimate dental age. Results: Age was over estimated for almost all of the studied subjects with an accuracy range from 0.18 to 1.19 years for males and from 0.08 to 0.87 years for females, with the exception of two age subgroups Conclusion: Demirjian’s method is very useful and suitable for the South Indian population. The development of a prediction equation and the introduction of adaptable conversion tables to transform the maturity score into a dental age for the South Indian population with population-specific samples may be suitable alternatives.

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一项回顾性研究：在一所牙科学院就读的南印度人群中，使用改良的 Demirjian 法通过下颌第三磨牙数字正畸图估算牙龄

目的：本研究旨在评估 Demirjian 牙齿年龄评估方法在南印度人群中的适用性，并开发出适合所研究人群的年龄预测方程。研究对象和方法：在这项回顾性、盲法、横断面研究中，我们从牙科学院就诊患者的存档医疗档案中选取了 120 张数字正畸照片，并对其进行了评估，以估算牙龄。研究结果除了两个年龄分组外，几乎所有研究对象的年龄都被高估了，男性的准确度在 0.18 至 1.19 岁之间，女性的准确度在 0.08 至 0.87 岁之间： Demirjian 方法非常有用，适合南印度人群。开发一个预测方程和引入可调整的转换表，将成熟度得分转换成南印度人群的牙龄，并针对特定人群进行取样，可能是合适的替代方法。

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International Journal of Forensic Odontology

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