Comparison of Dental Maturity in Children of Different Ethnic Origins: International Maturity Curves for Clinicians

    Volume 50, Issue 5 (September 2005)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Published Online: 27 July 2005

    Page Count: 11


    Demirjian, A
    Université de Montréal, Montréal, Québec

    Nyström, M
    University of Helsinki,

    Chaillet, N
    Université de Montréal, Montréal, Québec

    (Received 22 January 2005; accepted 26 March 2005)

    Abstract

    Dental maturity was studied with 9577 dental panoramic tomograms of healthy subjects from 8 countries, aged between 2 and 25 years of age. Demirjian's method based on 7 teeth was used for determining dental maturity scores, establishing gender-specific tables of maturity scores and development graphs. The aim of this study was to give dental maturity standards when the ethnic origin is unknown and to compare the efficiency and applicability of this method to forensic sciences and dental clinicians. The second aim was to compare the dental maturity of these different populations. We noted an high efficiency for International Demirjian's method at 99%CI (0.85% of misclassified and a mean accuracy between 2 to 18 years ± 2.15 years), which makes it useful for forensic purposes. Nevertheless, this international method is less accurate than Demirjian's method developed for a specific country, because of the inter-ethnic variability obtained by the addition of 8 countries in the dental database. There are inter-ethnic differences classified in three major groups. Australians have the fastest dental maturation and Koreans have the slowest.


    Paper ID: JFS2005020

    DOI: 10.1520/JFS2005020

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    Title Comparison of Dental Maturity in Children of Different Ethnic Origins: International Maturity Curves for Clinicians
    Symposium , 0000-00-00
    Committee E30