Having more teeth than normal is a condition known as hyperdontia, or supernumerary teeth. Children usually have 20 teeth, and by adulthood the normal number of teeth is 32, but up to 3% of people have extra teeth growing somewhere in their mouths. Hyperdontia is one of the less common dental problems you might come … Continue reading What is Hyperdontia? Extra Teeth Causes, Problems and Treatments