alexa Maxillary protraction using a hybrid hyrax-facemask combination.
Dentistry

Dentistry

Dentistry

Author(s): Nienkemper M, Wilmes B, Pauls A, Drescher D

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Abstract BACKGROUND: The aim of this in study was the evaluation of treatment outcomes after using a hybrid hyrax-facemask combination in growing class III patients. METHODS: Treatment of 16 children (mean age 9.5±1.3 years) was investigated clinically and by means of pre- and post-treatment cephalograms. Changes in sagittal and vertical, and dental and skeletal values were evaluated and tested for statistically significant differences. RESULTS: All mini-implants remained stable during treatment. Mean treatment duration was 5.8±1.7 months. There was a significant improvement in skeletal sagittal values: SNA, +2.0°; SNB, -1.2°; ANB, +3.2°; WITS appraisal, +4.1 mm and overjet, +2.7 mm. No significant changes were found concerning vertical skeletal relationships and upper incisor inclination. In relation to A point, the upper first molars moved mesially about 0.4 mm (P=0.134). CONCLUSIONS: The hybrid hyrax-facemask combination seems to be effective for orthopaedic treatment in growing class III patients. Unwanted maxillary dental movements can be avoided due to stable skeletal anchorage.
This article was published in Prog Orthod and referenced in Dentistry

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