Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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THE TREATMENT OF CLASS III MALOCCLUSION USING FR-III

FR-III를 이용한 3급 부정교합 환자의 치험례

  • Kwak, Ah-Ram (Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University) ;
  • Park, Jae-Hong (Institute of Oral Biology, School of Dentistry, Kyung Hee University) ;
  • Choi, Sung-Chul (Institute of Oral Biology, School of Dentistry, Kyung Hee University) ;
  • Kim, Kwang-Chul (Institute of Oral Biology, School of Dentistry, Kyung Hee University)
  • 곽아람 (경희대학교 치과대학 소아치과학교실) ;
  • 박재홍 (경희대학교 치과대학 구강생물학연구소) ;
  • 최성철 (경희대학교 치과대학 구강생물학연구소) ;
  • 김광철 (경희대학교 치과대학 구강생물학연구소)
  • Published : 2008.05.30
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Abstract

In children with Class III malocclusion, it is important to identify whether the etiology is functional, dental, skeletal. FR-III developed by Rolf Frankel in 1970, has been used during deciduous, mixed, and early permanent dentition to correct class III malocclusion characterized by maxillary skeletal retrusion. According Frankel, the vestibular shields and upper labial pads act to counteract the forces of the surrounding musculature that restrict forward maxillary development and cause a retrusion in maxillary tooth position. This can achieve favorable developments with the basal bone, teeth and alveolar bone. We report FR-III that can be applicated in cases of early mixed dentition with mild maxillary deficiency and deepbite before the eruption of permanent maxillary incisor.

반대교합은 교두간섭이나 유구치의 조기상실 등에 의해 하악이 기능적인 전방위로 위치된 기능성 반대교합과 하악골의 과성장, 상악골의 열성장 또는 양자가 복합된 골격성 반대교합, 구치부의 관계는 1급이나 전치부의 치축경사가 조화를 이루지 못해 발생되는 치성 반대교합으로 분류된다. 1970년 Rolf Frankel에 의해 소개된 Functional regulator(FR)의 한 종류인 FR-III는 상악의 열성장을 동반한 반대교합을 개선하기 위해 유치열기, 혼합치열기, 및 초기 영구치열기에 사용되고 있다. 이 장치는 비정상적인 근육력을 차단하여 구강내 치열 및 악궁에 대한 힘의 불균형 상태를 개선하고, 구강주위의 근육을 훈련시켜 새로 형성된 힘의 균형에 의해 이차적으로 악안면골의 크기와 형태를 변화시킨다. 본 증례는 상악 중절치가 맹출하기 전에 미약한 상악 열성장과 전치부의 깊은 교합을 동반한 전치부 반대교합을 FRIII로 치료하여 양호한 결과를 얻었기에 이에 보고하는 바이다.

Keywords

References

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