Generally, it takes many months or in some cases, years, for a cavity to develop. In other cases, they never form to some people.
For a tooth decay to develop, there should be presence of dietary sugars and dental plaques on the teeth. With the presence of these elements, a tooth demineralization occurs, which in time, results to the formation of a cavity.
There are also conditions when the reverse of tooth decay happens. In this case, instead of demineralization process, what takes place is remineralization, a process that counteracts the damage done by tooth decay. When you have a decaying tooth and decaying suddenly stops to a point, remineralization may have occurred.
