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ISRN Dentistry
Volume 2013 (2013), Article ID 390314, 9 pages
http://dx.doi.org/10.1155/2013/390314
Research Article

Dental Maturity in Saudi Children Using the Demirjian Method: A Comparative Study and New Prediction Models

Department of Preventive Dentistry, Riyadh Colleges of Dentistry and Pharmacy, P.O. Box 67126, Riyadh 11596, Saudi Arabia

Received 27 December 2012; Accepted 18 January 2013

Academic Editors: M. Del Fabbro and J. H. Jeng

Copyright © 2013 Ziad D. Baghdadi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A sample of 422 dental panoramic radiographs from individuals of known age (from 4 to 14 yrs), sex (males: 217, females: 205), and ethnicity (Saudi) was collected. A dental maturation score for each individual was calculated using the Demirjian method. Age was then estimated using the original Demirjian curves and tables based on French-Canadian population and population-specific curves and tables for Arab (Saudi and Kuwaiti) and European (Belgian) populations. The differences between dental age and chronological age were analyzed and compared using paired t-tests, one-way ANOVA test, and a post hoc Scheffé’s test. The Demirjian method utilizing French-Canadian standards presented significant difference between dental age and chronological age for the total sample and in the vast majority of age groups in both sexes. The mean overestimation of age was about 10 months ( ). The tables designed specifically for Arab populations had a significantly lower error than the tables designed for French-Canadian and Belgian populations. The latter had the largest error in age predication. New age prediction models and maturation scores for Saudi population were developed based on the Demirjian method using multinomial functions.