Journal of Forensic Medicine ›› 2024, Vol. 40 ›› Issue (2): 149-153.DOI: 10.12116/j.issn.1004-5619.2023.231206

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Determining Whether an Individual is 18 Years or Older Based on the Third Molar Root Pulp Visibility in East China

De-min HUO1(), Kai-jun MA2(), Jing-lan XU3, Xu SONG4, Xiao-yan MAO4, Xia LIU5, Kai-fang ZHAO6, Jian ZHANG1, Meng DU1   

  1. 1.Institute of Criminal Science and Technology, Jiading Branch of Shanghai Public Security Bureau, Shanghai 201822, China
    2.Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai 200083, China
    3.Shanghai Jiading District Hospital of Traditional Chinese Medicine, Shanghai 201800, China
    4.Department of Orthodontics, Shanghai Jiading District Dental Research Institute, Shanghai 201800, China
    5.Detachment of Criminal Investigation, Qingpu Branch of Shanghai Public Security Bureau, Shanghai 201700, China
    6.Institute of Criminal Science and Technology, Pudong Branch of Shanghai Public Security Bureau, Shanghai 200135, China
  • Received:2023-12-23 Online:2024-06-07 Published:2024-04-25
  • Contact: Kai-jun MA

Abstract:

Objective To investigate the age-related changes of the mandibular third molar root pulp visibility in individuals in East China, and to explore the feasibility of applying this method to determine whether an individual is 18 years or older. Methods A total of 1 280 oral panoramic images were collected from the 15-30 years old East China population, and the mandibular third molar root pulp visibility in all oral panoramic images was evaluated using OLZE 0-3 four-stage method, and the age distribution of the samples at each stage was analyzed using descriptive statistics. Results Stages 0, 1, 2 and 3 first appeared in 16.88, 19.18, 21.91 and 25.44 years for males and in 17.47, 20.91, 22.01 and 26.01 years for females. In all samples, individuals at stages 1 to 3 were over 18 years old. Conclusion It is feasible to determine whether an individual in East China is 18 years or older based on the mandibular third molar root pulp visibility on oral panoramic images.

Key words: forensic anthropology, forensic dentistry, age estimation, third molar, root pulp, oral panoramic images

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