11.   A toothpaste that promises to whiten teeth with a bleaching agent can do little to change the color of teeth, dentists say.

12.   But dentists say good old-fashioned tooth brushing is the best prevention.

13.   But the dentists say that their fees cover only the expense of laboratory tests and other costs of certifying products and that there is no profit to the organization.

14.   But today, dentists say most everyone can go to the grave with their own set of choppers.

15.   But what people do in the privacy of their home is the best predictor of whether teeth will stand the test of time, dentists say.

16.   Conventional dentists say the claims are unproven and the practice is potentially dangerous.

17.   Dentists say the glasses help distract and relax patients like Pam McHugh, who says she needs nitrous oxide just to calm her anxiety when she visits her periodontist.

18.   Dentists say that getting used to the new size and shape of veneers may take some time.

19.   Dentists say that if a tooth cannot be saved, an implant is the next-best thing.

20.   Dentists say that, too.