마이크로 임플랜트를 이용한 II급 2류 과개교합 환자의 치험례
Treatment of a Skeletal Class II Division 2 Patient with Microimplant Anchorage
김영휘, 이상윤, 박효상, 홍미희,
소속 상세정보
김영휘 ( Kim Young-Hwi ) - Kyungpook National University School of Dentistry Department of Orthodontics
이상윤 ( Lee Sang-Yoon ) - Kyungpook National University School of Dentistry Department of Orthodontics
박효상 ( Park Hyo-Sang ) - Kyungpook National University School of Dentistry Department of Orthodontics
홍미희 ( Hong Mi-Hee ) - Kyungpook National University School of Dentistry Department of Orthodontics
Abstract
The purpose of this case report was to describe the considerations in orthodontic treatment of a patient with skeletal Class II division 2 deep bite malocclusion. A 20-year-old female presented with chief complaints of deep bite and crowding. Facial clinical examination showed deep mentolabial sulcus, gummy smile, lip line canting (right side down), and straight profile. Intraorally, her dentition exhibited a deep bite including linguoversion of the maxillary anterior teeth. After extraction of the maxillary second premolars, microimplants were placed in the interradicular space between the maxillary central incisors. And microimplant anchorage was used to apply intrusive force to the maxillary incisors and retraction force through long hooks that were placed between lateral incisors and canines. As a result of orthodontic treatment using microimplants, labial crown tipping and palatal root torque of the maxillary incisors were obtained. Also, deep bite and anterior crowding were corrected, and facial profile was improved. Consequently, absolute microimplant anchorage makes an orthodontic force system simple and provides an effective intrusion of the maxillary incisors with minimizing the side effects such as unwanted round tripping of the teeth in the treatment of skeletal Class II division 2 malocclusion.
키워드
Skeletal Class II division 2; Microimplant; Intrusion anchorage; Retraction; Maxillary incisors
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