Frequent swimmers may be at risk for developing yellowish-brown or dark brown stains on their teeth.

Those who swim more than six hours a week continually expose their teeth to chemically treated water. Pool water contains chemical additives such as anti-microbials, which give the water a higher pH than saliva. As a result, salivary proteins break down quickly and form organic deposits on swimmers' teeth.

The hard, brown deposits, known as "swimmers' calculus," appear most frequently on the front teeth. Incidence of brown tartar is as high as 58 percent in children who swim regularly in elementary through high school.

Brushing more often and more carefully hasn't been proven to help. In fact, overuse of tartar control toothpaste can cause irritation and inflammation of the gums. However, swimmers' calculus can normally be removed by a professional dental cleaning. Those who swim competitively should be sure to visit their dentist and hygienist regularly.

Courtesy of the Academy of General Dentistry (www.agd.org)

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WDDICSTN057 05/07
© 2007 Delta Dental Insurance Company

The AARP Dental Insurance Plan is administered by Delta Dental Insurance Company. The plan is insured by Delta Dental Insurance Company in AK, AL, DC, DE, FL, GA, LA, MD, MS, MT, NV, NY, PA, PR, TN, TX, UT, VI and WV (Policy DDIC1230), by Dentegra Insurance Company in AR, AZ, CA, CO, CT, HI, IA, ID, IL, IN, KS, KY, ME, MI, MN, MO, NC, ND, NE, NJ, NM, OH, OK, OR, RI, SC, SD, VA, WA, WI and WY (Policy DIC1230), and by Dentegra Insurance Company of New England in MA, NH and VT (Policy DICNE1230). Policy numbers may vary by state. AARP endorses the AARP Dental Insurance Plan. Delta Dental Insurance Company pays a fee to AARP and its affiliate for use of the AARP trademark and other services. Amounts paid are for general purposes of AARP and its members. AARP does not make dental plan recommendations for individuals. You are strongly encouraged to evaluate your needs before choosing a dental plan.