Abstract
A case of an impacted second deciduous tooth superior to an impacted second premolar is reported.To our knowledge, only three similar cases have been reported in the Japanese literature.All reported cases occurred in the mandible.Our very rare case was the first to arise in the maxilla.This case was thought to be caused by the formation of a follicular cyst around the deciduous tooth crown and an abnormal position of the tooth germ of the second premolar.
