대한치과교정학회지 (The korean journal of orthodontics)
- 제31권4호
- /
- Pages.403-414
- /
- 2001
- /
- 2234-7518(pISSN)
- /
- 2005-372X(eISSN)
Modified Teuscher Appliance의 치료효과에 관한 연구
An Evaluation of treatment effects of modified teuscher appliance in class II division 1 mallocclusion
-
Ahn, Sug-Joon
(Department of Orthodontics, College of Dentistry, Seoul National University) ;
- Kim, Choong-Bae ;
- Nahm, Dong-Seok (Department of Orthodontics, College of Dentistry, Seoul National University)
- 발행 : 2001.08.01
초록
본 연구의 목적은 modified Teuscher Appliance(MTA)와 bionator를 이용하여 치료한 II급 1류 부정교합 환자의 치료전후 측모 두부방사선계측사진을 비교분석함으로써 두 장치 사이의 치료효과에 대한 차이를 밝혀내어 성장하는 II급 1류 부정교합을 가진 환자들의 치료에 도움을 얻는데 있다. MTA 및 bionator를 이용하여 성공적으로 치료한 혼합치열기 II급 1류 부정교합 환자 20명의 치료전과 치료후 두부방사선계측사진의 계측항목을 계측한 후, 두군 사이에 나타나는 치료효과의 차이를 알아보기 위해 치료전후 항목의 차이를 구하였다. 이 항목들에 대해 t-test를 시행하여 다음과 같은 결과를 얻었다. 1. 양군 사이에 통계적인 유의성이 나타난 선계측 항목으로 U1 to FH, U1 to PP, U6, to PP, U6 to FH, Ar-Pog, ramus height(S-Go), L1 to A-Pog, L1 to facial plane 등이 있었다(p<0.05). 2. 양군 사이에 통계적 유의성이 크게 나타난 각도계측 항목으로 SNB, SNA, FABA(FH to AB plane angle), APDI 등이 있었다(p<0.05). 3. 양군 사이에 성장양상을 나타내는 Facial height ratio,
The purpose of this study was to evaluate treatment effects of the modified Teuscher appliance (MTA) in early Class II division 1 malocclusion. For this purpose, treatment effects of the bionator were compared with those of the MTA. The twenty subjects who were treated excellently with bionator and MTA were selected in each group. In pre- and post-treatment lateral cephalograms, 50 variables were measured, and then the differences between pretreatment and posttreatment data of the bionator and the MTA were statistically evaluated by t-test. The results were as follows : 1. The linear measurements that showed large difference between the bionator group and the MTA group are U1 to FH, U1 to PP, U6 to FH, U6 to PP, Ar-Pog, ramus height, L1 to A-Pog, L1 to facial plane (p<0.05). 2. The angular measurements that showed large difference between the bionator group and the MTA group are SNB, SNA, FABA, APDI (p<0.05). 3. The measurements of the growth pattern such as facial height ratio, FMA, SN-MP angle showed no difference between two groups (p>0.05). These results suggest that the bionator influence the mandiblar growth and lower dentoalveolar structures more than the MTA, and the MTA influence upper jaw and upper dentoalveolar structures more than the bionator comparatively in early Class II division I malocclusion.