Children whose parents smoke are more likely to develop cavities, says a recent study. Doctors at the University of Rochester's Strong Children's Research Center, in the US, studied nearly 4,000 children with cavities and discovered a relationship between second-hand smoke and cavities. The children underwent dental exams and blood testing to detect the level of cotinine, a measure of second-hand smoke. Forty seven per cent of the children in the study had cavities in their baby teeth and 26 per cent had cavities in their permanent teeth reports Ivanhoe Broadcast News .
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