During the oral examination of 1, 013 grade school pupils in Kitakyushu city, a case each of supernumerary tooth and geminated tooth were encountered. Examination of color, morphology, size, and roentgenograms was made. The results were as follows : 1. The supernumerary tooth occurred in the right lateral incisor region of the maxillar. It was quite identical with the normal lateral incisor in color, morphology, and roentgenograms. 2. The geminated tooth was an extremely rare case, considered to be a union of the left second mild molar and the second premolar in the mandible. 3. Histogenesis has not yet been clarified.
