Tooth gemination

Tooth gemination, also known as schizodontia, twinning, or double teeth, occurs when a single tooth germ splits during development. Splitting of the tooth may be partial or complete. If the splitting is complete, the extra tooth is known as a supernumerary tooth. Tooth gemination is difficult to distinguish from tooth fusion, thus, both conditions are often referred to as “double teeth”.

Double teeth can cause other dental problems such as crowding, ectopic eruption of adjacent teeth, gum issues, cavities, malocclusion, poor esthetics, and more. Treatment depends on whether the tooth is primary or permanent, the degree of splitting, and its functional & esthetic impact.