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International Journal of Dentistry
Volume 2011, Article ID 150424, 6 pages
Clinical Study

Measuring Dental Caries in the Mixed Dentition by ICDAS

1Faculty of Dentistry, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait
2Institute of Stomatology, University of Tartu, Raekoja Plats 6, 51003 Tartu, Estonia
3Faculty of Medicine, University of Turku, 20014 Turku, Finland

Received 9 July 2011; Accepted 24 August 2011

Academic Editor: Alexandre Rezende Vieira

Copyright © 2011 Eino Honkala et al. 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.


Caries has traditionally been assessed with WHO criteria including only obvious caries lesions. ICDAS has been developed to detect also the enamel caries lesions. This study aims to study caries and the associations of the number of caries lesions between the permanent and primary molars with ICDAS in the mixed dentition of the first and second grade primary school children. The clinical examinations of 485 children were conducted by four examiners with high reproducibility (inter- and intraexaminer kappas >0.9). The mean number of caries lesions—especially dentine caries—seemed to be higher in the second primary molars than in the first permanent molars. There were significant correlations between the number of lesions on occlusal and lingual surfaces between the primary and permanent molars. Enamel caries lesions, restorations, and caries experience did not increase according to age. Therefore, caries might be increasing in this population. As a conclusion, ICDAS recording seems to give appropriate information from the occurrence of caries lesions and its correlations between the primary and permanent teeth and surfaces.