In this June 3, 2008 file photo, Tianna Swisher, a student at Liberty Valley Elementary School in Danville, Pa., attempts to drink from the water fountain at Montour Preserve near Washingtonville, Pa.
Question: My dentist keeps finding cavities along the gum line around old crowns and bridges. He says that this is due to the dry mouth problem that I have. What can I do about this? - H.J. in ...