In this clinical-statistical survey, the subjects were 174 children who had visited the Department of Pediatric Dentistry, Tsurumi University School of Dental Medicine from January 1984 to December 2001.The status of patients with supernumerary teeth was studied with respect to the eruption of the maxillary central incisor after the extraction of impacted supernumerary teeth in the maxillary anterior region. The age of the patients at the time of the supernumerary teeth were extracted ranged from 4.5yrs to 14.1 yrs with a mean age of 7.4 yrs. The results were as follows:1) Disturbances in the eruption of the central incisor after the extraction were found in 34.5% of all cases, including delayed eruption (9.8%), torivertion (8.6%), diasthema (8.0%), linguoclination (7.5%)and labioclination (0.6%).2) The incidence of the disturbances after the extraction was less than that before the extraction (55.0%). The incidence of these disturbances tended to decrease when the teeth were extracted during the primary dentition period or early mixed dentition period.3) Statistical evaluation for the relationship between the position of the supernumerary teeth and the incidence of the disturbances in eruption of the central incisor after the extraction revealed that the larger the vertical superimposition, based dental X-ray film examination, between the supernumerary teeth and the central incisor existed, the higher incidence of the disturbances in eruption would be observed.These results suggests that the impacted supernumerary teeth in the maxillary anterior region should be extracted at an early stage, if possible, to bring about normal eruption of the central incisor of maxilla.