The possible association between localized juvenile periodontitis and supernumerary teeth.

Supernumerary teeth and localized juvenile periodontitis in the same patient is a very unusual finding. Only 5 cases are reported, 2 of which were identical twins. An additional 2 cases are presented in which localized juvenile periodontitis was associated with multiple supernumerary premolars. These cases are strikingly similar to 3 of the previously reported cases, raising the possibility that this combination of disorders may be more than a chance association.