My last blog post stimulated a lot of questions and comments. The Crest Pro-Health line has an active ingredient called Stannous Fluoride, which seems to be responsible for staining certain peoples’ teeth. We have some patients who diligently floss and brush every day, and continue to have persistent staining of the teeth. Crest Pro-Health products seem to be the culprit. If this is a problem for you, consider a product with the active ingredient Sodium Fluoride, rather than Stannous Fluoride. Please feel free to contact me if you are concerned.