Chronological age estimation based on third molar development in a Portuguese population

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• 作者：In锚s Morais Caldas (12) icaldas@fmd.up.pt
  Paula J煤lio (1)
  Ricardo Jorge Sim玫es (1)
  Eduarda Matos (3)
  Am茅rico Afonso (12)
  Teresa Magalh茫es (2345)
• 关键词：Forensic dentistry &#8211 ; Dental age &#8211 ; Third molar &#8211 ; Teeth mineralization &#8211 ; Age estimation
• 刊名：International Journal of Legal Medicine
• 出版时间：March 2011
• 出版年：2011
• 期刊代码：91_0937-9827
• 类别：soc
• 卷：125
• 期：2
• 页码：235-243
• 数据来源：sp

摘要

Third molar development was assessed using a sample of 1,131 orthopantomograms from a Portuguese population. The methodology applied was the eight stages (A&#8211;H) method described by Demirjian et al. The final sample was made of 739 orthopantomograms, 387 (52.5%) of which belonging to females; age ranged between 6.1 and 22.5 years old (mean age = 14.49, S.D. = 4.37). For each developmental stage, mean age, standard deviation, and minimal and maximal age was assessed; evaluation of the rate formation of each tooth, according to sex, was calculated and data distribution expressed in percentiles for each stage; the probability of an individual being 16 was also evaluated. The relationship between tooth development and chronological age had a statistical significance for all teeth and both sexes (p < 0.0001). The data described may provide reference for forensic application and agree with the thesis that each population need specific data.