期刊
JOURNAL OF FORENSIC AND LEGAL MEDICINE
卷 18, 期 8, 页码 350-354出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jflm.2011.07.003
关键词
Forensic odontology; Radiographic age assessment; India; Living adults; Lateral incisor; Canine; First premolar
资金
- S.D.M. College of Dental Sciences & Hospital, Dharwad
Pulp/tooth area ratio (PTR) method of adult dental age estimation has been examined on few tooth types. We assessed the lateral incisor (LI) and first premolar (PM1) in addition to canine (C) - alone and in combination. Periapical radiographs from 61 Indians aged 21-71 years were examined. PTR of LI produced the best age correlation (r = -0.395) followed closely by PM1 (r = -0.362). The canine revealed the lowest correlation (r = -0.206); among tooth combinations, the three teeth taken together had the best R value (-0.438) followed by LI + PM1 (-0.435), LI + C (-0.406) and C + PM1 (-0.37). The standard errors of estimates (S.E.E.) of the regression analyses for the individual teeth and tooth combinations ranged from +/- 12.13 to 13.08 years, indicating minimal difference in age estimates using solitary or multiple teeth. Errors were higher than in European groups (+/- 2.5-5 years) which may partly owe to moderate age correlation of secondary dentine deposition in Indians. Moreover, facial soft-tissue superimposition in living subjects evaluated herein possibly precluded optimal tooth and pulp canal visualization. These indicate that the PTR method should be used judiciously in age estimation of living Indian adults, although further studies on larger samples with evenly distributed age-groups is necessary for deriving definitive conclusions. (C) 2011 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.
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