It might sound too good to be true: Candy that’s good for your teeth? It’s true: there are a few types of candy that are actually great for your oral health! Chewing Gum can be great for your teeth - as long as it is sugarless gum. Chewing gum increases the production of saliva, which plays an essential role in neutralizing acids in the mouth and preventing bad breath and tooth decay. Gum with sugar would negate any positive effects, since the sugar would only provide a feast