[The impacted upper cuspid]

Impacted upper cuspids may give rise to problems, such as the formation of cysts and the resorption of adjacent teeth. Early diagnosis (before the age of 12) is important. Proper timing of extraction of the deciduous cuspid may lead to spontaneous correction. When the position of the cuspid is unclear, orthopantomography and a lateral skull film may be helpful. Palatally impacted cuspids should be exposed surgically and moved into position by orthodontic treatment. Labially impacted cuspids are exposed by relocation of an attached gingival flap. The experience of the authors with the treatment of 81 patients are reported.