Study of horizontal skeletal pattern and dental arch in skeletal Class III malocclusion patients.
10.4041/kjod.2008.38.5.358
- Author:
Hee Chan PARK
1
;
Jin Woo LEE
Author Information
1. Department of Orthodontics, School of Dentistry, Dankook University, Korea. jwlee@dankook.ac.kr
- Publication Type:Original Article
- Keywords:
3-D imaging;
Prognathism
- MeSH:
Bicuspid;
Constriction;
Dental Arch;
Humans;
Imaging, Three-Dimensional;
Jaw;
Malocclusion;
Mandible;
Maxilla;
Prognathism
- From:Korean Journal of Orthodontics
2008;38(5):358-370
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: The purpose of this study was to investigate the horizontal skeletal pattern and dental arch differences between Class III malocclusion patients and normal occlusion patients. METHODS: Twenty skeletal Class III malocclusion patients and ten normal occlusion patients were selected and 3D facial CT were taken to analyze the horizontal skeletal differences between the two groups. RESULTS: In the horizontal comparison of the maxilla, skeletal width and perimeter were significantly smaller in skeletal Class III patients on ANS and A point reference planes. The difference between maxillary width of ANS and A point reference planes showed that there was greater constriction of the first and second premolar in skeletal Class III patients. In the horizontal comparison of the mandible, the widths of the canine and premolar area were significantly larger in skeletal Class III patients on B point reference plane. The differences between width of the upper and lower jaws (comparison of A and B reference planes) were significantly large in the canine and premolar area. CONCLUSIONS: From this study, the characteristics of Class III malocclusion patients were shown through horizontal constriction of the maxilla. But to make clear further detailed characteristics of Class III malocclusion patients, additional studies are necessary.
