Are Cavities Contagious?

Sort of…read on! There are three things needed to produce a cavity: bacteria, a susceptible tooth, and sugar. Everyone has some bacteria in their mouth, but some people have more cavity producing bacteria than others. Anyone or child who has an “active” cavity in their mouth has a higher level of cavity producing bacteria. When food, drinks, utensils, toothbrushes and more are shared, this bacteria can be passed to another person. Children do not have this cavity producing bacteria when they are born, they can acquire it from a parent/caregiver or even another child. In fact, signs of cavity producing bacteria can be identified by a pediatric dentist before the child’s first birthday!