A retrospective study of unerupted maxillary incisors associated with supernumerary teeth

We retrospectively reviewed the clinical records and radiographs of 100 pat ients who had had supernumerary teeth removed. Their mean (SD) age Has 9 ye ars 3 months (2), The 100 patients had a total of unerupted maxillary incis ors associated with supernumerary teeth. The supernumerary tooth nas remove d exposure of the permanent tooth more often among the 79 younger children (aged 10 years or less) (SND=3.52, P<0.01), and when the incisors were less mature (Cvek classification 1,2, and 3) (SND=5.27, P<0.01). Of these incis ors with immature roots that Here treated conservatively, 60 (72%) erupted and 24 (28%) required further operation. Of the mature incisors treated con servatively, 10 (63%) required further operation. In this study, almost three-quarters of immature incisors erupted spontaneo usly after removal of the supernumerary teeth. Over half of the mature teet h required further operation. Mature teeth should be exposed or without bon ding at the time of removal of the supernumerary teeth.