In this photograph taken by AP Images for Crest Pro-Health — Actress Tiffani Thiessen, star of ÒWhite CollarÓ, kicks off National Gingivitis Awareness Month, Wednesday, Sept. 15, 2010 at Greeley Park Square, in New York. Thiessen, in partnership with Crest Pro-Health, declared September National Gingivitis Awareness Month to help educate Americans on gingivitis and how they can help prevent and help reverse it using new Crest Pro-Health Clinical Gum Protection. (Gary He/AP Images for Crest Pro-Health)
