Abstract
The dentigerous cyst is an odontogenic cyst that frequently occurs during the tooth replgcement period. Dentigerous cysts occur in mandibular premolars and have also been known in lower third molars. This type of cyst has been the subject of clinical statistical reserch and pathologic histology examinations, but there has been little long-term observational research on impacted teeth with dentigerous cysts. In this case, the angle and depth of two impacted mandibular premolars were severe, and the cyst was large. The cyst was removed early and the treatment result was excellent. The erupted impacted teeth were observed 10 years after cyst was removed, and the teeth remained in a stable position. This case indicates that natural eruption of impacted teeth is possible after early stage remoral of a dentigerous cyst. This case can be used as a reference for treatment of the dentigerous cyst in the future.
