What Causes Tooth Decay?
Tooth decay, also known as dental caries or cavities, occurs when bacteria inside your mouth create acid that eats holes in the surface layer of your teeth, or the enamel. As time goes by, this decay can grow larger if it’s left untreated and can eventually reach the nerve endings in the center of your tooth. When this happens, the only recourse is to have the entire tooth removed.
Tooth decay is caused when plaque forms on your teeth. Many forms of bacteria live in your mouth, and when you consume excessively sugary food and drinks, these bacteria form plaque. The acid in this plaque slowly begins to remove the minerals in the enamel.
After the enamel is removed, this acid will begin the attack the second layer of your tooth, which is called dentin.