맹출 공간 부족을 동반한 성장기 골격성 III급 부정교합 환자의 미니스크루 지지형 구개 급속 확장을 이용한 상악골 전방 견인치료

Maxillary Protraction Treatment Using Miniscrew-Assisted Rapid Palatal Expansion for Growing Skeletal Class III Malocclusion Patient with Insufficient Eruption Space

Skeletal Class III malocclusion, especially those originating from deficiency of maxillary development, is usually treated with early protraction of the maxilla in growing children. To reduce dentoalveolar side effects, there have been efforts to accom-pany the skeletal anchorage to the maxillary protraction such as miniscrew-assisted rapid palatal expansion (MARPE). This case report shows maxillary protraction treatment in growing skeletal Class III malocclusion patient with insufficient erup-tion space with MARPE. A 9-year-old female patient had skeletal Class III malocclusion, anterior edge-to-edge bite and max-illary arch length deficiency. MARPE was placed for maxillary protraction, and later, it was also used to regain the space for the alignment of the maxillary permanent tooth. After 28-month of treatment including 7-month of maxillary protraction, intermaxillary relationship was improved and maxillary permanent tooth alignment was completed.