Clinical study on the rapid maxillary and mandibular expansion companied with fixed appliance
10.3969/j.issn.1001-3733.2016.02.011
- VernacularTitle:上下颌联合快速扩弓结合固定矫治器矫治前后牙弓形态变化的研究
- Author:
Hailiang FENG
;
Guizhi ZHAO
;
Jie KE
;
Rongxiu ZHANG
;
Yandi ZHANG
;
Quanhong LIN
- Publication Type:Journal Article
- Keywords:
Hyrax expansion appliance;
MBT fixed appliance;
Arch form;
Cephalometric radiograph
- From:
Journal of Practical Stomatology
2016;32(2):207-211
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the dental and skeletal changes after orthodontic treatment for malocclusion patients with rapid maxil-lary and mandibular expansion companied with fixed appliance.Methods:36 patients underwent the treatment with rapid maxillary and mandibular expansion companied with straight wire appliance.Pre-and post-treatment dental casts and lateral cephalometric radiographs were measured and compared.Results:After treatment,the maxillary and mandibular arch width perimeters increased(P <0.05).The anterior arch depths decreased(P <0.05).No significant differences were found in vertical skeletal variables(P >0.05).U1-SN and U1-NA decreased,L1-MP and L1-NB increased(P <0.05).Conclusion:Dental crowding can be solved effectively and occlusion re-lationship can be kept well with rapid maxillary and mandibular expansion companied with straight wire appliance without influence on the vertical skeletal relationship.
