Endo-, perio-, -itis -- oh my! Even the terminology about tooth and gum care can make your mouth hurt. Fortunately, a little knowledge about gum disease can lead to a lifetime of better care to prevent and conquer it, or at least to keep your teeth where they belong: in your mouth. What do immunity, fertility and even heredity have to do with how pink your gums are and how well they hold your teeth? And is it just the gums that hold those choppers in place? Bone up on your knowledge of all things gummy; it might not be as scary as you think.