Say ouch!Five billion people worldwide suffer from tooth decay Tooth Decay Definition Tooth decay, which is also called dental cavities or dental caries, is the destruction of the outer surface (enamel) of a tooth. , says a new study by the World Health Organization. That means more than 80 percent of the world population needs to work on their smile. Tooth decay happens when bacteria living In your mouth produce an acid that dissolves your tooth enamel enamel, a siliceous substance fusible upon metal. It may be so compounded as to be transparent or opaque and with or without color, but it is usually employed to add decorative color. It was used to decorate jewelry in ancient Egypt, Greece, and Rome. (outer, protective covering of a tooth). Left untreated, tooth decay can cause pain, infection, and even tooth loss. Want to flash a healthy smile? "Brush and floss (Free, Libre and Open Source Software) See free software and open source. to reduce bacteria," advises Dr. Matt Messina, dentist dentist /den·tist/ (den´tist) a person with a degree in dentistry and authorized to practice dentistry. den·tist n. A person who is trained and licensed to practice dentistry. and spokesperson for the American Dental Association American Dental Association (ADA), n.pr a nonprofit professional association whose membership is dental professionals in the United States. Its purpose is to assist its members in providing the highest professional and ethical care to the citizens of the . Compare the two bar graphs (right). Which world region suffers from the most tooth decay? Explain. [GRAPHICS OMITTED] Lesson Plans Here's the recent press release on tooth decay by the World Health Organization: www.who.int/mediacentre/releases/2004/pr15/en/ Did you know that teeth help give your face its shape? Find out more cool facts about teeth at the American Dental Hygienists' Association Web site: www.adha.org/kidstuff/ |
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