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Age estimation from developing third molars.

Yvonne Padmini Wilson1, Phrabhakaran Nambiar2,3, Hashim Yaacob3

  • 1Department of Facilities, Security and Transport, MAHSA University, Kuala Lumpur, Malaysia.

The Medico-Legal Journal
|November 11, 2021
PubMed
Summary
This summary is machine-generated.

Third molar development in Malaysians shows early female advancement, with males catching up by their teens. This study details developmental stages and variations in third molars for Malaysian populations.

Keywords:
Age estimationMalaysiansmaxilla and mandible-dental developmentpanoramic radiographsthird molars

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Area of Science:

  • Dentistry
  • Human Biology
  • Radiology

Background:

  • Third molar (wisdom tooth) development is a key indicator of dental age.
  • Understanding developmental variations is crucial for orthodontic and forensic applications.

Purpose of the Study:

  • To investigate third molar development in a Malaysian population.
  • To analyze variations based on jaw (maxilla vs. mandible) and gender.
  • To correlate developmental stages with chronological age.

Main Methods:

  • Utilized Demirjian's method for assessing tooth development.
  • Analyzed dental panoramic radiographs of 1224 Malaysian subjects aged 8–24 years.
  • Assigned Demirjian development grades (A–H) to third molars.

Main Results:

  • 18.8% of subjects had congenitally missing or extracted third molars.
  • Females initiated third molar development earlier, particularly in the mandible.
  • Males showed accelerated development by age 9, reaching more advanced grades in their mid-teens than females.
  • Root development initiation (Grade E) observed from age 13; advanced stages (Grade H) possible at 18 years.

Conclusions:

  • Significant gender and jaw-related variations exist in Malaysian third molar development.
  • Demirjian's method provides a reliable framework for assessing third molar maturation in this population.
  • Findings contribute to accurate dental age estimation and understanding of developmental patterns.