Disorders of the lips, mouth and tongue.

The lining of a healthy mouth (oral mucosa) is reddish and gums, which conform strongly to the teeth, are paler in color. The roof of the mouth (palate) is divided into two: the hard palate, which has peaks and is situated in the front, and the soft palate, which is smooth and is on the back. A wet-dry edge clearly defines the outer surface and inside of the lips, the outer is a layer of skin and internal, a mucous membrane. The surface of the tongue is covered with small conical prominences called taste buds.
The mouth can be affected by localized disease (which affects only a specific area of the body). This is the case of some infections and injuries. Also the systemic diseases (affecting the body in general) can cause abnormalities in the mouth. This is the case of diabetes, AIDS and leukemia. Since the first manifestations of these diseases are sometimes in the mouth, the dentist can detect these processes before anyone else.