前方牵引器联合Hass快速扩弓器治疗骨性前牙反56例疗效分析  

Analysis of the effect of maxillary protraction combined with Hass rapid maxillary expansion in the treatment of osteal anterior crossbite malocclusion

作　　者：胡玉乾[1] 薛冬 郑琳琳[1] 张锦辉[1] 张宗扬[1] 王薇[3] 

机构地区：[1]辽东学院医学院口腔医学系,辽宁丹东118002 [2]丹东市玉乾口腔诊所,辽宁丹东118002 [3]沈阳市口腔医院,沈阳110002

出　　处：《中国实用口腔科杂志》2012年第2期113-115,共3页Chinese Journal of Practical Stomatology

摘　　要：目的评价前方牵引器联合Hass快速扩弓器矫治骨性前牙反的临床疗效。方法选择2008年8月至2010年12月在丹东市玉乾口腔诊所收治的乳牙期或恒牙早期骨性Ⅲ类错患儿56例,应用前方牵引器联合Hass快速扩弓器矫治前牙反,比较矫治前后的头影测量数据。结果矫治后56例骨性前牙反患儿上齿槽座点-鼻根点-下齿槽座点角、Wits值明显增加,上颌骨矢状向有明显的骨性生长,上颌牙槽骨也有明显增长。面中长度、下颌骨长度、下颌骨体长度以及下颌平面与鼻底平面的交角均增加(P<0.05)。结论前方牵引器联合Hass快速扩弓器治疗骨性前牙反可以显著改善患儿的侧貌,促进上颌骨的唇向生长。Objective To observe and evaluate the clinical effect of maxillary protraction combined with Hass rapid maxillary expansion in the treatment of osteal anterior crossbite malocclusion. Methods Totally 56 osteal anterior cross- bite patients before adolescence were selected. All the patients were treated with Hass rapid maxillary expansion and pro- traction therapy. After treatment, cephalometric measurements were analyzed. Results After the treatment, ANB, Wits, A-Vert, Pr-Vert, Co-A, Goi-Gn and L NL-ML were increased （P 〈 0.05）. Conclusion Hass rapid maxillary expan- sion combined with protraction therapy can conspicuously improve the profile of the patients and sagittal growth of the maxilla.

关 键 词：上颌前方牵引 骨性前牙反 Hass快速扩弓器 矢状向生长 上颌 

分 类 号：R78[医药卫生—口腔医学]