The lower jaw bone Maxilla: The upper jaw bone Mesial: The surface of the tooth nearest the front of the dental arch Molar: The flat-topped teeth to the rear or posterior part of the mouth and used to grind food The third molar, if present, is the wisdom tooth
The mandible is the lower jawbone of vertebrates; either of the two parts of a bird's beak; and a pair of horny mouth parts in insects, crustaceans, centipedes, and millipede, assisting in biting and crushing the food