You use your mouth for many different things. You eat with them, you show emotion with them, and you also do some bad things with them. Dr. Howard Glazer, the president of the Academy of General Dentistry explains that bad habits such as biting non-food objects can cause breaking and chipping of teeth. Over time this could lead to lost teeth or expensive tooth repair. Other habits that can cause problems include excessive digestion of juices and fruits that contain citric acid. An old wife