Tooth decay, also known as dental caries or cavities, is a breakdown of teeth due to acids made by bacteria. The cavities may be a number of different colors from yellow to black. Symptoms may include pain and difficulty with eating.

Permanently damaged areas in teeth that develop into tiny holes.Causes include bacteria, snacking, sipping sugary drinks and poor teeth cleaning.There may be no symptoms. Untreated cavities can cause toothache, infection and tooth loss.Treatments include fluoride, fillings and crowns. Severe cases may need a root canal or removal.