Enamel Defects in the Deciduous Dentition as a Potential Predictor of Defects in the Permanent Dentition of 8- and 9-year-old Children in Fluoridated Cheshire, England

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Abstract
It is claimed that dental fluorosis in both deciduous and permanent teeth is increasing in fluoridated and non-fluoridated communities. What is unclear is whether fluoride-induced enamel opacities in the deciduous dentition are associated with the subsequent appearance of enamel defects in the permanent dentition. The aim of this study was to establish whether a relationship existed between the presence of diffuse enamel defects on the deciduous molars and permanent incisors of schoolchildren who were lifetime residents in an optimally fluoridated community in Cheshire, England. The dentitions of eight-and nine-year-old children were examined by two examiners, each unaware of the findings of the other. There was a significant increased risk of diffuse enamel defects in the permanent incisors for those children who presented with diffuse defects on their first deciduous molars (Relative Risk, 1.45; 95% confidence interval, 1.05 to 2.0) or second deciduous molars (Relative Risk, 1.86; 95% confidence interval, 1.36 to 2.54). In light of these findings, it is worth considering the potential of the presence of enamel defects in deciduous molars in children aged 1 to 3 years as a predictor of the future appearance of similar lesions in their permanent incisors.