The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Treatment of skeletal Class II adult patient with vertical and transverse problems caused by nasal airway obstruction using microimplant anchorage

비강기도 협소에 의한 수직 및 횡적 문제를 가진 골격성 II급 성인환자에서의 마이크로임플란트를 이용한 증례보고

  • Chae, Jong-Moon (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Chang, Na-Young (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Cho, Jin-Hyoung (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kang, Kyung-Hwa (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, School of Dentistry, Wonkwang University)
  • Received : 2009.04.29
  • Accepted : 2009.07.14
  • Published : 2009.08.30
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Abstract

This case report describes the treatment of an adult patient with a Class I canine and molar relationship but a convex profile with a retrognathic mandible and marked lip protrusion, as well as an excessive lower anterior facial height and reduced transverse width on both arches due to a nasal airway obstruction. The constricted arches were expanded by surgically-assisted rapid palatal expansion and the application of a Schwarz appliance to the maxilla and mandible. Acceptable facial balance was obtained using contemporary directional force technology with microimplant anchorage (MIA), which provided horizontal and vertical anchorage in the maxillary and mandibular posterior teeth, as well as intrusion and torque control in the maxillary anterior teeth, resulting in a favorable counterclockwise mandibular response. The total treatment period was 29 months and the results were acceptable for 13 months after debonding.

본 증례보고는 I급 견치 및 구치 관계를 보이나, 비강기도 협소에 따른 하안면 고경의 과도한 증가와 양 악궁의 폭경 감소 뿐만 아니라, 하악골의 후방위치 및 현저한 입술의 돌출로 인해 돌출된 안모를 지닌 성인 환자의 치료를 소개하고자 한다. 협착된 양 악궁은 수술을 동반한 급속 구개확장과 슈발츠 장치로써 확장되었으며, 마이크로임플란트를 이용한 directional force technology를 적용하여 상하악 구치부에서의 고정원 보강과 상악 전치부의 토크 조절 및 시계 반대 방향으로의 양호한 mandibular response를 얻음으로써 양호한 안모의 균형을 얻을 수가 있었다. 총 치료기간은 29개월 소요되었고, 장치 제거 후 13개월 유지 후에도 양호한 결과가 유지되었다.

Keywords

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