An evaluation of treatment effects of modified teuscher appliance in Class II division 1 malocclusion.
- Author:
Sug Joon AHN
1
;
Choong Bae KIM
;
Dong Seok NAHM
Author Information
1. Department of Orthodontics, College of Dentistry, Seoul National University, Korea. titoo@chollian.net
- Publication Type:Original Article
- Keywords:
Modified Teuscher appliance;
Bionator;
Class II division 1 malocclusion
- MeSH:
Activator Appliances;
Jaw;
Malocclusion*;
Pemetrexed
- From:Korean Journal of Orthodontics
2001;31(4):403-414
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
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.
