What is oral hygiene? Oral hygiene is the practice of keeping the mouth and teeth clean to prevent dental problems, most commonly, dental cavities, gingivitis, periodontal(gum) diseases and bad breath.
The worst food and drink for your teeth. Everyone knows that sugar is bad for your teeth, but acidic foods can cause just as many problems. Here is a list of common foods and drinks and how acidic (bad) or alkaline (good) they are.