How long can a human live without water How long can human live without food? A human can't live without food for 3 or 4 days (however your body type is,) and a human can't live without water for 2 or 3 days.
Cavities refer to tooth decay, which occurs when specific types of bacteria produce acid that destroys the toothâs enamel and its underlying layer, the dentin. Signs & Symptoms. Cavity symptoms include: 1  Toothache. 2  Sensitivity to sweet, hot or cold foods or drinks.
Oral Cavity (cont'd)-Anatomy of a tooth. Right side upper 1 crown Lower right side 2 Root. Left 3 enamel upper tooth 4 dentin 5 Pulp in order, next Gingiva pink gum area the cementum Root canal Periodontal membrane Bone Blood vessel and nerves.