RESUMEN
Increased dimension of a tooth indicates the presence of double tooth. Double tooth could be due to fusion or gemination. These are due to developmental disturbances of teeth.1 Gemination is an anomaly that occurs due to an attempt to form two teeth from a single tooth bud. This resulted in a large tooth without complete separation or alterations in the number of teeth.2 Fusion is caused by union of two discrete tooth germs, wherein they might be united by dental hard tissues. However they have separate pulp chambers. Developmental aberrations occur during morpho-differentiation of tooth bud. These occur due to local metabolic disturbances or due to pressure of crowding of tooth germs.3 Hereditary tendency has been reported for fusion between normal and supernumerary tooth.4