Drusini's and Takei's Methods for Age Estimation in Korean Adults

Eun-Gyo Jeong; Jun-Young Heo; Soo-Min Ok; Sung-Hee Jeong; Yong-Woo Ahn

doi:10.7580/kjlm.2015.39.1.1

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Jeong, Heo, Ok, Jeong, and Ahn: Drusini's and Takei's Methods for Age Estimation in Korean Adults

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Korean J Leg Med 2015;39(1):1-5.

Published online: 17 January 2015

DOI: https://doi.org/10.7580/kjlm.2015.39.1.1

Drusini's and Takei's Methods for Age Estimation in Korean Adults

Eun-Gyo Jeong, Jun-Young Heo, Soo-Min Ok, Sung-Hee Jeong, Yong-Woo Ahn

Department of Oral Medicine, School of Dentistry, Pusan National University, Yangsan, Korea

Correspondence to Yong-Woo Ahn Department of Oral Medicine, School of Dentistry, Pusan National University, 49 Busandaehak-ro, Yangsan 626-815, Korea Tel: +82-55-360-5241 Fax: +82-55-360-5234 E-mail: ahnyongw@pusan.ac.kr

Received 17 January 2015 Revised 4 February 2015 Accepted 18 February 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Estimation of an individual's age has received considerable attention in forensic science. Several methods have been described, and abundant results have been obtained and evaluated. Among the numerous methods for dental age prediction in adults, the progressive diminution of the coronal pulp cavity and dental attrition have been primarily used. Although the reliability of age estimation methods using teeth has been demonstrated, correlation between methods has not been reported. Therefore, the aim of this study was to evaluate concurrence between Drusini's methods. We reanalyzed the age of 107 patients (64 male, 43 female) using Drusini's method. The ages had been previously estimated as ranging from 24 to 69 years using Takei's method. Our results revealed a strong correlation between the two methods (r=0.762) and suggest both methods to be suitable for application in Korean individuals younger than 50 years old. A previous study has shown Takei's and Drusini's methods to be reliable for forensic purposes. The strong correlation between the two methods in the present study suggests that it would be reasonable to use the most appropriate method for age estimation dependent on oral state.

Keywords: Forensic dentistry, Age determination by teeth, Korea, Population, Matched-pair analysis

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Fig. 1.

Measurement of coronal height (CH) and coronal pulp cavity height (CPCH) performed on radiograph using Adobe Photoshop CS5 program.

Table 1.

Distribution of study samples according to age and gender

Age group (yr)	Male	Female	Total
21-30	0	3	3
31-40	2	6	8
41-50	17	10	27
51-60	27	14	41
61-70	18	10	28
Total (%)	64 (59.81)	43 (40.19)	107 (100)

Table 2.

Correlation of Takei's and Drusini's methods for males and females by Karl Pearson's correlation coefficients technique

Sex	Correlation coefficient (r-value)
Male	0.766^∗
Female	0.747^∗
Total	0.762^∗

^∗ P<0.05, by Pearson's correlation.

Table 3.

Correlation of Takei's and Drusini's methods for tooth types by Karl Pearson's correlation coefficients technique

Tooth type	Correlation coefficient (r-value)
1st premolar	0.760^∗
2nd premolar	0.752^∗
Total	0.762^∗

^∗ P<0.05, by Pearson's correlation.

Table 4.

Inter-rater reliability according to gender by Pearson's correlation coefficients technique

Sex	Intra-rater reliability (intra-class correlation coefficient)
Male	0.943^∗
Female	0.937^∗
Total	0.942^∗

^∗ P<0.05, by Pearson's correlation.

Table 5.

Correlation of Takei's and Drusini's methods for age groups by Pearson's correlation coefficients technique

Age (yr)	Correlation coefficient (r-value)
31-50	0.693^∗
50-70	0.488^∗
Total	0.762^∗

^∗ P<0.05, by Pearson's correlation.

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