매복 미맹출 제 1대구치의 외과적 노출과 교정력을 이용한 견인의 치험례

SURIGICAL EXPOSURE AND ORTHODONTIC TREATMENT OF THE IMPACTED FIRST MOLAR

It is a relatively rare clinical experience to see the impacted first molar. The first permanent molar is the key in normal occlusion. Abnormal eruption of the first permanent molars would inflict normal development of dental arches and give rise to abnormal root resorption of the adjacent teeth. Therefore, the abnormally erupted first permanent molars should be detected and treated early in order to obtain proper occlusal guidance in mixed dentition period. This report presents two cases on distally tilted and impacted mandibular first molars which were treated by surgical exposure and orthodontic traction using facial mask.