Incremental effects of facemask therapy associated with intermaxillary mechanics
Online veröffentlicht: 14. Dez. 2023
Seitenbereich: 78 - 83
Eingereicht: 01. Okt. 2009
Akzeptiert: 01. Feb. 2010
DOI: https://doi.org/10.2478/aoj-2010-0014
© 2010 Guilherme Thiesen et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Objectives
To determine the dentofacial changes in children with skeletal Class III malocclusions treated with maxillary expansion, external maxillary protraction and intermaxillary traction.
Methods
Fifteen Class III patients in either the deciduous or the mixed dentition (Mean age: 7.6 years; SD: 1.9 years) were used. The children were treated with a modified Haas expander, a modified lingual arch, intermaxillary elastics and facemask for nine months. Lateral cephalometric radiographs were taken at the beginning of treatment (T1) and at 3-month intervals (T2, T3, T4).
Results
Most significant sagittal skeletal modifications occurred in the first three months of treatment. During the first three months of treatment the upper and lower incisors tipped lingually and the face height increased. Towards the end of treatment the upper incisors proclined and the upper lip became more protrusive.
Conclusion
The therapy corrected the horizontal skeletal and arch discrepancies and improved the positions of the lips.