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Radiologic Age Validation using Demirjian's 8-Teeth Method - An Institutional Anthropological Study on North-Indian

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Forensic age estimation in India using dental development shows India-specific formulas are more reliable than the Demirjian method for juveniles and young adults. Accuracy is better in females aged 14-17, suggesting localized scoring is needed.

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Area of Science:

  • Forensic Odontology
  • Anthropology

Background:

  • Age estimation is crucial in forensic odontology, utilizing various methods including dental development.
  • Dental calcification offers accurate and accessible data for age determination.

Purpose of the Study:

  • To validate Demirjian's revised 8-teeth method using India-specific formulas for age estimation in individuals aged 7-25.
  • To assess the accuracy of these formulas in the local Indian population.

Main Methods:

  • Utilized Orthopantomograms (OPGs) of 7-25 year olds.
  • Assigned developmental stages using the 'Tooth development chart'.
  • Applied gender-specific regression formulas to estimate age and compared it with actual age.

Main Results:

  • India-specific regression formulas demonstrated higher reliability than the modified Demirjian method.
  • The method showed better accuracy for the 14-17 year age range, particularly in females.
  • The approach is recommended as an adjunct to existing age estimation techniques.

Conclusions:

  • Significant variations in dental development exist within the diverse Indian population.
  • The need for India-weighted scoring systems, especially in North India, is validated for improved reliability.