Abstract:
OBJECTIVES:Radiographic dental age estimation methods are viable in the living and deceased. One such method [Kvaal et al. Forensic Sci Int 1995;74:175-85] quantified secondary dentinal deposition indirectly through measurements of tooth and pulp lengths and widths. The method is untested on non-European populations and our objective was to assess its accuracy in Indians and determine if population-specific formulae improved age estimation. METHODS:Digital radiographs of 100 Indians were made using the conventional paralleling technique (n=47) and bisecting angle technique (n=53), the latter being the prevalent method of periapical radiography in India. Pulp and tooth lengths and widths were measured (using commercially available computer software) and their ratios substituted in Kvaal's formulae; also, population-specific formulae were developed by us using principal component regression analyses. RESULTS:The average errors of age estimation were ∼±18-20 years for the paralleling and ∼±19-21 years for the bisecting angle technique; estimates in both samples of radiographs were significantly different from actual age (p<0.001). The Indian formulae produced smaller errors for both samples (∼±11-14 years), an improvement over Kvaal's formulae. CONCLUSIONS:Large errors from Kvaal's formulae may owe primarily to variation in the rate of secondary dentinal deposition in Indians influenced both by environmental and genetic variation. Errors using the Indian formulae, whilst smaller, are more than in the original study and other European samples, implying large errors in age estimates in Indians irrespective of population-specific formulae. This may preclude the method's routine usage in estimating age in adult Indians.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Kanchan-Talreja P,Acharya AB,Naikmasur VGdoi
10.1016/j.archoralbio.2011.08.020subject
Has Abstractpub_date
2012-03-01 00:00:00pages
277-84issue
3eissn
0003-9969issn
1879-1506pii
S0003-9969(11)00274-3journal_volume
57pub_type
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journal_title:Archives of oral biology
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journal_title:Archives of oral biology
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journal_title:Archives of oral biology
pub_type: 杂志文章
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更新日期:2003-05-01 00:00:00
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更新日期:2012-06-01 00:00:00
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更新日期:1991-01-01 00:00:00
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更新日期:2018-04-01 00:00:00
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更新日期:2009-03-01 00:00:00
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更新日期:2012-08-01 00:00:00
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