Secondhand smoke and incidence of dental caries in deciduous teeth among children in Japan: population based retrospective cohort study

BMJ, 21 October 2015

The aim of this study is to question whether maternal smoking during pregnancy and exposure of infants to tobacco smoke at age 4 months increase the risk of caries in deciduous teeth.

Among the findings the study concludes that exposure to tobacco smoke at 4 months of age was associated with an approximately twofold increased risk of caries, and the risk of caries was also increased among those exposed to household smoking, by 1.5-fold, whereas the effect of maternal smoking during pregnancy was not statistically significant.

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