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Classification of the skeletal variation in normal occlusion
Ji-Young Kim1, Shin-Jae Lee, Tae-Woo Kim
1Department of Orthodontics, College of Dentistry, Seoul National University, 28-22 Yunkeun-Dong, Chongro-Ku, Seoul 110-744, South Korea.
The Angle Orthodontist
|May 19, 2005
Summary
This study classified normal occlusion into nine skeletal types using cephalograms. Analyzing dentoalveolar compensation aids in diagnosing individual malocclusion patients for better clinical practice.
Area of Science:
- Dentistry
- Orthodontics
- Cephalometrics
Background:
- Understanding skeletal patterns in normal occlusion is crucial for diagnosing malocclusion.
- Dentoalveolar compensation mechanisms require detailed analysis for clinical application.
Purpose of the Study:
- To classify normal occlusion samples into distinct skeletal types.
- To analyze dentoalveolar compensation within normal occlusion.
- To establish clinically applicable differential diagnostic criteria for malocclusion patients.
Main Methods:
- Lateral cephalograms from 294 normal occlusion adults were analyzed.
- Principal component analysis extracted anteroposterior and vertical skeletal factors from 18 variables.
- Cluster analysis classified skeletal patterns into nine types; discriminant analysis determined classification accuracy.
Main Results:
- Nine distinct skeletal types were identified within the normal occlusion group.
- Discriminant analysis achieved 87.8% accuracy in skeletal typing.
- Diverse anteroposterior and vertical skeletal relationships exist within normal occlusion.
Conclusions:
- Normal occlusion exhibits significant skeletal diversity, necessitating classification.
- Identifying individual skeletal patterns and dentoalveolar objectives can enhance malocclusion diagnosis and treatment planning.