The korean journal of orthodontics (대한치과교정학회지)
- Volume 27 Issue 2
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- Pages.273-282
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- 1997
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
A STUDY ON THE MANDIBULAR MOVEMENT CHANGES AFTER ORTHOGNATHIC SURGERY IN SKELETAL CLASS III PATIENTS
악교정 수술 후 골격성 III급 부정교합 환자의 하악운동 변화에 관한 연구
- Nahm, Dong-Seok (Department of Orthodontics, College of Dentistry, Seoul National University) ;
- Suhr, Cheong-Hoon (Department of Orthodontics, College of Dentistry, Seoul National University) ;
- Yang, Won-Sik (Department of Orthodontics, College of Dentistry, Seoul National University) ;
- Chang, Young-Il (Department of Orthodontics, College of Dentistry, Seoul National University)
- 남동석 (서울대학교 치과대학 치과교정학교실) ;
- 서정훈 (서울대학교 치과대학 치과교정학교실) ;
- 양원식 (서울대학교 치과대학 치과교정학교실) ;
- 장영일 (서울대학교 치과대학 치과교정학교실)
- Published : 1997.04.30
Abstract
The purpose of this study was to evaluate changes in mandibular movement patterns after orthognathic surgery in skeletal Class III patients. The sample consisted of 20 Class III malocclusion patients(9 males, 11 females). Just before and after(2-7months) surgery, maximum opening & closing movement, mandibular border movement on sagittal, frontal and horizontal planes were recorded using Sirognathograph & BioPak EGN. On each record, 21 items were measured and statistically analyzed. The results were as follows 1. Angle of protrusive movement on sagittal plane showed greatest change after surgery. Also, as the incisal guidance was established by surgery, straight path of protrusive movement became curved line. 2. Maximum opening distance and maximum antero-posterior distance on maximum opening & closing movement, maximum opening distance on sagittal plane, angle of left lateral excursion on frontal plane were statistically significant after snrgery(p<0.01). 3. Maximum width of lateral excursion on frontal plane, distane of right lateral excursion and angle of maximum left lateral excursion on horizontal plane were statistiraily significant after surgery(p<0.05). 4. Maximum opening distance and maximum antero-posterior distance on maximum opening & closing movement showed significant differences according to post-surgical time(p<0.05). More recovery of range of movement occured in 5-7month group than in 2-3month group. 5. As the occlusal interferences were removed by orthognathic surgery, irregular opening & closing path became smooth curve.
본 연구는 골격성 III급 부정교합 환자에서 악교정 수술 전후의 하악운동 양상을 관찰하여 수술에 의한 하악운동의 변화를 평가하기 위하여 시행되었다. 서울대학교병원 교정과에서 골격성 III급 부정교합으로 진단받고 수술 전 교정치료를 받은 후, 동 병원 악안면구강외과에서 악교정 수술을 시행한 20명(남;9명, 여;11명)을 대상으로 수술 직전과 수술 2-7개월 후에 Sirognathograph와 BioPak EGN을 이용하여 최대 개폐구 운동과 시상면, 전두면, 수평면에서의 하악한계운동을 기록하고 21개의 항목을 계측하여 다음과 같은 결과를 얻었다. 1. 수술 후에 가장 큰 변화를 보인 항목은 시상면상 전방 운동각도로서, 수술 전
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