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Miniscrew-anchored maxillary protraction in growing Class III patients
Felicia Miranda1, José Carlos da Cunha Bastos2, Alexandre Magno Dos Santos3
1Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil.
Journal of Orthodontics
|March 14, 2020
Summary
Miniscrew-anchored maxillary protraction (MAMP) therapy effectively corrected Class III malocclusion in two male patients. This skeletal treatment enhanced maxillary growth and improved facial structure, offering a promising option for growing individuals.
Area of Science:
- Orthodontics and Dentofacial Orthopedics
- Craniofacial Growth Modification
Background:
- Class III malocclusion is characterized by deficient maxillary growth and/or excessive mandibular growth.
- Maxillary hypoplasia in Class III malocclusion often requires orthopedic intervention for optimal correction.
- Early intervention in growing patients can significantly influence skeletal outcomes.
Purpose of the Study:
- To present a case series on the efficacy of miniscrew-anchored maxillary protraction (MAMP) therapy.
- To evaluate the skeletal and dental changes associated with MAMP in Class III malocclusion.
- To assess MAMP as a treatment option for growing patients with Class III malocclusion.
Main Methods:
- The study included two male patients with Class III malocclusion.
- Treatment involved a hybrid expander and two mandibular miniscrews.
- Class III elastics were used with the miniscrews for maxillary protraction.
Main Results:
- Significant increases in effective maxillary length were observed.
- Improvements in the ANB angle and Wits appraisal indicated skeletal correction.
- Minimal dental side effects were noted, with substantial skeletal changes achieved.
Conclusions:
- Miniscrew-anchored maxillary protraction (MAMP) therapy demonstrated significant skeletal effects in correcting Class III malocclusion.
- MAMP therapy is a viable and effective treatment option for Class III malocclusion in growing patients.
- The use of miniscrews provides stable anchorage for effective maxillary protraction.

