快速扩弓结合方丝弓及前方牵引矫治骨性Ⅲ类错的临床分析

目的:探讨快速扩弓结合方丝弓技术及前方牵引装置治疗骨性Ó类错的方法和特点。方法:选择15例骨性Ó类错患儿,男6例,女9例,年龄815~12岁,均为替牙期。X线片显示主要为上颌骨发育不足。左手腕骨片显示为生长发育的高峰前期。结果:15例患者经平均9月的治疗,面型均明显改善,头影测量其骨骼改变主要为 SNA角增大,A点前移。结论:三者联合治疗骨性Ó类错可取得明显的骨骼及侧貌改变。

Combined rapid palatal expansion (RPE), edgewise technique and protraction headgear in correction of skeletal Class III malocclusion]

OBJECTIVE: The skeletal Class III malocclusion often occurs in ethnic Asia population, and it is difficult to obtain an ideal results if only treated with protraction headgear (PH). However, the combined rapid palatal expansion (RPE), Edgewise Technique and PH can reach it, so the authors investigated the methods and characteristics of combined RPE, Edgewise Technique and PH in the treatment of skeletal Class III malocclusion. METHODS: Fifteen patients, aged 8.5-12 years, including six males and 9 females, with skeletal Class III malocclusion and maxillary retrusion were selected for this study. Radiographs of left hand and wrist showed that all patients were at the pre-pubertal stage. The duration of treatment was nine months on average. RESULTS: The SNA and A-ptm increased with a mean of cephalometric analysis, which showed significant difference (P < 0.05). CONCLUSION: Obvious skeletal and profile changes can be achieved with combined RPE, Edgewise Technique and PH in the treatment of early skeletal Class III malocclusion.