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.
To treat a cavity your dentist will remove the decayed portion of the tooth and then fill the area on the tooth where the decayed material was removed. Fillings are also used to repair cracked or broken teeth and teeth that have been worn down from misuse (such as from nail-biting or tooth grinding).