Tooth decay a genetic problem

Remember “The Big Book of British Smiles” from “The Simpsons”?

The dentist used it to scare children into proper dental hygiene.

And let’s be honest, it was funny! Because though British tea and good manners have an excellent international reputation, British teeth are mostly used as a punch line.

But tooth decay is far from only a British problem — in fact, it’s one of the most common chronic disease worldwide.

Scientists say the health of your teeth depends on a combination of genetics and dental hygiene. We all know that person who never brushes, eats tons of candy and rarely (if ever) has a cavity. Then there are those of us who floss regularly, yet still end up breathing in the laughing gas once or twice a year.

About 60% of the risk for tooth decay appears to be due to genetic factors, says Mary L. Marazita, director of the Center for Craniofacial and Dental Genetics at the University of Pittsburgh School of Dental Medicine.

Though genetic dentistry is still in its infancy, scientists have identified five areas where genes play a role in tooth decay.

Read the full, original story: Bad teeth? Blame your genes

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