Decay is caused by bacteria living in the mouth. The bacteria eat away at the tooth surface and cause a cavitation in the tooth. The bacteria that cause decay are always present, but can become especially active with certain food and drink. Sugary and acidic foods make the teeth especially vulnerable to the decay-causing bacteria. To prevent decay, follow our recommended home hygiene regimen and come for regular dental visits to our office. Should you still get decay, we can repair the tooth a number of ways depending on your situation.