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Supernumerary is a fancy term meaning “extra”.   The patient shown in the photo above has an extra set of premolars.

Supernumerary premolars occur 3 times more in males than in females, indicating a possible sex-linked inheritance, with the highest frequency of occurrence in the mandibular premolar region (74%). They are also the most common supernumerary teeth in the mandibular arch (7%).

Various treatment recommendations are discussed with parents whose children show signs of extra teeth.  Extra teeth can cause orthodontic problems over time so they are usually removed early on.    Although this adult patient does an excellent job of keeping them clean,  they are not considered an ideal situation.