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[Orthodontic treatment of Class III patients with mandibular asymmetry]
Yin-Zhong Duan1, Na Huo, Lei Chen
1Department of Orthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an, China. duanyz@fmmu.edu.cn
Objective:
To investigate the treatment outcome of Class III patients with dental, functional and mild skeletal mandibular asymmetry.
Methods:
Thirty-five patients (14 males and 21 females) with dental, functional and mild skeletal mandibular asymmetry were selected. The age range of the patients was 7 - 22 years with a mean age of 16.5 years. Dental mandibular asymmetry was treated with expansion of maxillary arch to help the mandible returning to normal position. Functional mandibular asymmetry was treated with activator or asymmetrical protraction and Class III elastics. Mild skeletal mandibular asymmetry was treated with camouflage treatment.
Results:
Good occlusal relationships were achieved and facial esthetics was greatly improved after orthodontic treatment in patients with dental and functional mandibular asymmetry. However, patients with skeletal mandibular asymmetry should be treated with both extraction and genioplasty.
Conclusions:
Orthodontic treatment was suitable for patients with dental and functional mandibular asymmetry, while combined orthodontics and surgery could get good results in patients with skeletal mandibular asymmetry.
