Tooth decay is by no means a new problem. Recent archeological findings that we have already reported on found ancient teeth that had clear signs of cavitation from bacteria. Back then, people thought teeth got ruined by tiny parasites, depicted to be something like gnats. We now know this to be untrue, of course. By tooth decay, we mean the thinning down and eventual cavitation of the tooth enamel, sometimes accompanied with the breaking of the tooth. The reason this happens is because the minerals in the teeth become dissolved, usually as a result of coming into contact with the acidic secretions of bacteria that live in the mouth, but there are several factors that lead to tooth decay.