Cavities are caused by a bacterial infection of the teeth. In a healthy mouth, there is a balance between protective bacteria and cavity-causing bacteria.
Have you ever wondered how “Johnny” hardly flosses, and doesn’t get a cavity?
General health, genetics, salivary composition and flow, dietary habits and oral hygiene habits are most notably some factors that can impact the checks and balances of the immune system to make you more or less susceptible to dental caries, also known as cavities.
Saliva is supersaturated with different forms of calcium, phosphate and apatite minerals that can also be found in the enamel of teeth. In the presences of acid, the minerals can leach out from the enamel to the point where a cavity is formed. However, if the saliva is working properly, and/or is not overwhelmed by risk factors like a bacterial infection, an acidic environment, foods high in sugar, then your teeth will be protected.