Longitudinal study of dental caries experience and pattern among a group of children in Baghdad


The most dramatic increase in dental decay is thought to have occurred during thelast part of the 19th and the beginning of the 20th centuries. The aim of this study wasto investigate the caries experience and pattern in primary and permanent teeth in alongitudinal study. Dental caries of 166 kindergarten children of 4-5 years old wasrecorded. Only 122 of the children were re-examined when their ages became 10-11.The third examination of 118 children was done when their ages became 13-14.Dental caries registration was done following the criteria of WHO (1987). Dentalprevalence was increased by age reaching 94.9 percent at 13-14 years old. No sexdifferences were observed among the three examinations except in DMFT. TheDMFT incidence after 6 years was 4.3 and after 3 years was 1.8, while DMFSincidence was 6.4 and 2.2 respectively. The D/d component was the highest meanvalue. Although dental caries was significantly higher in posterior than in anteriorteeth, there were no jaw differences. Occlusal and proximal surfaces were thepredominate surfaces affected among permanent and primary teeth respectively.Coinciding with the incline in caries experience observed among children, changes inthe distribution and progression rate of the disease have been found.