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Incremental effects of facemask therapy associated with intermaxillary mechanics
Guilherme Thiesen1, Juliana de Oliveira da Luz Fontes, Michella Dinah Zastrow
1Department of Orthodontics, School of Dentistry, University of South Santa Catarina, Florianópolis, Santa Catarina, Brazil. guilhermethiesen@yahoo.com.br
Australian Orthodontic Journal
|June 26, 2010
Summary
This study on skeletal Class III malocclusions found that early treatment with maxillary expansion and protraction significantly corrected jaw discrepancies and improved lip posture in children.
Area of Science:
- Dentofacial Orthopedics
- Pediatric Dentistry
Background:
- Skeletal Class III malocclusion presents significant challenges in pediatric patients.
- Early intervention is crucial for managing dentofacial abnormalities.
Purpose of the Study:
- To evaluate dentofacial changes in children with skeletal Class III malocclusions.
- Assess the efficacy of combined maxillary expansion, external maxillary protraction, and intermaxillary traction.
Main Methods:
- A cohort of 15 pediatric patients with skeletal Class III malocclusions was treated.
- Treatment involved a modified Haas expander, lingual arch, intermaxillary elastics, and facemask over nine months.
- Lateral cephalometric radiographs were analyzed at baseline and 3-month intervals.
Main Results:
- Significant sagittal skeletal modifications were observed within the first three months.
- Initial lingual tipping of incisors and increased face height occurred.
- Later treatment stages showed upper incisor proclination and increased upper lip protrusion.
Conclusions:
- The combined therapy effectively corrected horizontal skeletal and arch discrepancies.
- Improved lip positions were noted as a positive outcome of the treatment.
