If you experience a sudden pain in one or more of your
teeth when biting down, you may have tooth decay or cavities. There’s a particular
type of bacteria that takes sugar from your diet and coverts it into
acid, which causes tooth decay, or holes in your teeth. When those holes get deep, that causes sensitivity and,
eventually, cavities.
If the pain occurs only once in a while, and isn’t
confined to single spot, it’s probably nothing to worry about, but if it’s consistent—meaning it recurs for a week or more—you
should pay your dentist a visit.