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Bionator treatment in Class II, division 1.
The Angle Orthodontist
|July 1, 1986
Summary
The Bionator appliance, when used before fixed braces, significantly increases vertical dimension and mandibular plane angle. Initial treatment effects were similar whether starting with a Bionator or fixed appliances.
Area of Science:
- Orthodontics
- Craniofacial development
Background:
- Orthodontic treatment aims to correct malocclusions.
- The Bionator is a functional appliance used in orthodontics.
- Fixed appliances are commonly used for comprehensive orthodontic correction.
Purpose of the Study:
- To compare the effects of Bionator therapy followed by fixed appliances versus fixed appliances alone and an untreated sample.
- To evaluate changes in vertical dimension and mandibular plane angle.
Main Methods:
- Retrospective study comparing three groups: Bionator + fixed appliances (n=20), fixed appliances only, and untreated controls.
- Cephalometric analysis to measure skeletal and dental changes.
Main Results:
- The Bionator group showed significant increases in vertical dimension and mandibular plane angle compared to other groups.
- Initial changes were comparable between Bionator and fixed appliance groups when used first.
Conclusions:
- The Bionator appliance influences vertical facial growth and mandibular rotation.
- Treatment sequence impacts craniofacial development in orthodontic patients.