In the maxillary arch of the 8-year-old-sister of the subject of Case 1, the permanent central incisors had erupted without the deciduous central incisors having exfoliated. Radiography showed a pair of supernumerary teeth in the same positions as in Case 1, though with less developed roots. The general morphology and position of the supernumerary teeth were identical in the radiographs of both sisters (Fig. 1 and Fig. 2). Again, surgical removal of the supernumerary teeth was followed by removal of bone.