front 1 Incisors | back 1 front 4, top & bottom, 8 total, used for biting food |
front 2 Canines | back 2 cuspids, 4 total, used for grasping and tearing food |
front 3 Premolars | back 3 bicuspids, 8 total, used for grinding food |
front 4 Molars | back 4 12 total, used for grinding food |
front 5 Crown | back 5 everything above the gum |
front 6 Root | back 6 everything below the gum |
front 7 Enamel | back 7 outer covering of the crown, consists of calcium salts and is the hardest substance in the body, is not replaced when lost |
front 8 Dentin | back 8 the bulk of the tooth under the enamel, harder than bone |
front 9 Pulp cavity | back 9 contains blood vessels, nerves, and connective tissue |
front 10 Gingiva | back 10 gums |
front 11 Cementum | back 11 thin layer of bonelike material that encloses the root |
front 12 Periodontal ligament | back 12 made of collagen and attaches the tooth to the jaw |