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Anchorage control in bioprogressive vs straight-wire treatment
Dayse Urias1, Fatima Ibrahim Abdel Mustafa
1Center for Professional Development, Brazilian Association of Dentistry, Curitiba, Brazil. dayseurias@sau.com.br
The Angle Orthodontist
|February 2, 2006
Summary
The Bioprogressive technique showed slightly better lower anchorage control than the Straight-wire technique in orthodontic patients. Both methods effectively managed molar movement during treatment for Class I and II malocclusions.
Area of Science:
- Dentistry
- Orthodontics
Background:
- Effective anchorage control is crucial in orthodontics.
- Various techniques aim to optimize anchorage, influencing treatment outcomes.
Purpose of the Study:
- To compare the efficacy of Bioprogressive and Straight-wire techniques for controlling lower anchorage.
- To evaluate molar movement and skeletal changes in patients treated with these techniques.
Main Methods:
- Retrospective analysis of 40 patients with Class I and II malocclusions treated with first bicuspid extractions.
- Group 1: Bioprogressive technique with utility arch and sectional retraction.
- Group 2: Straight-wire technique with a preadjusted appliance system.
Main Results:
- No significant differences in skeletal growth or lower molar mesial movement between groups.
- Mean lower anchorage loss: 3.1 mm (Bioprogressive) vs. 4 mm (Straight-wire).
- Apical base change was a key factor in molar correction.
Conclusions:
- The Bioprogressive technique demonstrated slightly superior lower anchorage control compared to the Straight-wire technique.
- Cortical anchorage, while not preventing molar movement, was effective in controlling it with a partial appliance.
- Both techniques showed comparable outcomes in skeletal and molar movement aspects.
