The accuracy of three methods of age estimation using radiographic measurements of developing teeth (original) (raw)

2003, Forensic Science International

The accuracy of age estimation using three quantitative methods of developing permanent teeth was investigated. These were Mo Èrnstad et al. [Scand. J. Dent. Res. 102 (1994) 137], Liversidge and Molleson [J. For. Sci. 44 (1999) 917] and Carels et al. [J. Biol. Bucc. 19 (1991) 297]. The sample consisted of 145 white Caucasian children (75 girls, 70 boys) aged between 8 and 13 years. Tooth length and apex width of mandibular canine, premolars and ®rst and second molars were measured from orthopantomographs using a digitiser. These data were substituted into equations from the three methods and estimated age was calculated and compared to chronological age. Age was under-estimated in boys and girls using all the three methods; the mean difference between chronological and estimated ages for method I was À0.83 (standard deviation AE0.96) years for boys and À0.67 (AE0.76) years for girls; method II À0.79 (AE0.93) and À0.63 (AE0.92); method III À1.03 (AE1.48) and À1.35 (AE1.11) for boys and girls, respectively. Further analysis of age cohorts, found the most accurate method to be method I for the age group 8.00±8.99 years where age could be predicted to 0:14 AE 0:44 years (boys) and 0:10 AE 0:32 years (girls). Accuracy was greater for younger children compared to older children and this decreased with age. #

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