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. 2019 Nov 11;19(1):242.
doi: 10.1186/s12903-019-0942-y.

Age Estimation in Three Distinct East Asian Population Groups Using Southern Han Chinese Dental Reference Dataset

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Free PMC article

Age Estimation in Three Distinct East Asian Population Groups Using Southern Han Chinese Dental Reference Dataset

Jayakumar Jayaraman et al. BMC Oral Health. .
Free PMC article

Abstract

Background: Dental age estimation can assist in the identification of victims following natural disasters and it can also help to solve birth date disputes in individuals involved in criminal activities. A reference dataset (RDS) has been developed from the dental development of 2306 subjects of southern Han Chinese origin and subsequently validated. This study aimed to test the applicability of the southern Han Chinese dental maturation RDS on three distinct East Asian population groups.

Methods: A total of 953 dental panoramic radiographs of subjects aged 2 to 24 years were obtained from Philippines, Thailand and Japan. The staging of dental development was conducted according to Anglo-Canadian classification system. The dental age (DA) was calculated using six methods; one un-weighted average and five weighted average (n-tds, sd-tds, se-tds, 1/sd-tds, 1/se-tds) methods based on the scores of the southern Han Chinese RDS. Statistical significance was set at p < 0.05 and the variation between chronological age (CA) and DA was evaluated using paired t-test and Bland & Altman scatter plots.

Results: From six dental age calculations, all methods of DA accurately estimated the age of Japanese and few methods in Filipino subjects (n-tds, 1/sd-tds, 1/se-tds). There was consistent overestimation of age for all the methods for Thai females (p < 0.05).

Conclusions: The southern Han Chinese dental reference dataset was shown to be most accurate for Japanese, followed by Thai males and it was particularly ineffective for Filipinos and Thai females.

Keywords: Age estimation; Dental age; Japan; Philippines; Southern Chinese; Thailand.

Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Distribution of samples (males, females) based on their geographical location
Fig. 2
Fig. 2
Variations (in years) between the Chronological Age (CA) and estimated Dental Age (1/sd-tds) in the Thai subjects using the southern Han Chinese reference dataset
Fig. 3
Fig. 3
Variations (in years) between the Chronological Age (CA) and estimated Dental Age (1/sd-tds) in the Filipino subjects using the southern Han Chinese reference dataset
Fig. 4
Fig. 4
Variations (in years) between the Chronological Age (CA) and estimated Dental Age (1/sd-tds) in the Japanese subjects using the southern Han Chinese reference dataset

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References

    1. British Broadcasting Corporation. Typhoon Haiyan death toll rises over 5000. https://www.bbc.com/news/world-asia-25051606 Accessed 3 Dec 2018.
    1. United Nations Children’s Fund. Percentage of children under age 5 whose births are registered (by sex, place of residence and household wealth quintile) https://data.unicef.org/topic/child-protection/birth-registration/ Accessed 3 Dec 2018.
    1. Thailand - Disaster Statistics, Data related to human and economic losses from disasters that have occurred between 1980 and 2010. Available: http://www.preventionweb.net/english/countries/statistics/?cid=170. Accessed 3 Dec 2018.
    1. Petju M, Suteerayongprasert A, Thongpud R, Hassiri K. Importance of dental records for victim identification following the Indian Ocean tsunami disaster in Thailand. Public Health. 2007;121:251–257. doi: 10.1016/j.puhe.2006.12.003. - DOI - PubMed
    1. Barnes GL. Origins of Japan-the ‘Big Picture’ revisited: a review of new plate tectonics research. Japan Rev. 2013;25:169–184.

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