正畸中前牙（牙合）平面倾斜的病因初探  

Preliminary investigation to the mechanism of anterior occlusal plane canting in orthodontic treatment

作　　者：郑旭[1] 马宁[1] 陈晓红[1] 周蕾[1] Zheng Xu Ma Ning Chen Xiaohong Zhou Lie

机构地区：[1]北京大学第三医院口腔科,100191

出　　处：《中华口腔正畸学杂志》2017年第1期33-36,共4页Chinese Journal of Orthodontics

摘　　要：目的 探讨正畸中前牙（牙合）平面倾斜（anterior occlusal plane canting,AOPC）的发生机制.方法 选择正畸治疗中牙列排齐后表现出AOPC的37例患者作为研究组,在正畸治疗完成后无AOPC,治疗中无针对AOPC进行处置的病例中选择31例患者为对照组,回顾病例资料,比较两组治疗前AOPC发生率、牙弓对称性及矫治设计对称性.结果 ①研究组中59.5％,对照组中12.9％治疗前存在原发性AOPC,卡方检验有统计学差异（P＜0.05）.②治疗前牙弓不对称比率原发性AOPC组63.7％,继发性AOPC组60％,对照组48.4％,卡方检验差异无显著性.③结合考虑牙弓对称性与矫治设计对称性,矫治设计不利于牙弓对称性矫治的比率对照组为19.4％,原发性AOPC组为45.5％,继发性AOPC组为86.7％,卡方检验有统计学差异（P＜0.05）.结论 治疗前牙弓不对称对正畸中前牙AOPC的发生没有显著影响,治疗前已存在的AOPC和不利于牙弓对称性的矫治设计影响正畸中AOPC的发生,这可能与正畸治疗中左右侧矢状向和垂直向支抗的明显差异有关.Objective To explore the mechanism of anterior occlusal plane canting （AOPC） during orthodontic treatment.Methods 37 patients presented with AOPC after orthodontic alignment were selected as study group,another 31 patients who showed no AOPC after orthodontic treatment and received no AOPC correction during orthodontic treatment were selected as control group.The incidence of pre-treatment AOPC,symmetricity of dentition and treatment planning were investigated.Results ① 59.5% of the patients in study group and 12.9% in control group showed primary AOPC before treatment,the difference is significant with chi-square test （P〈0.05）.② 48.4% of the patients in control group,63.7% in primary AOPC group and 60% in secondary AOPC group showed dentition asymmetry before orthodontic treatment,but the difference between groups is not significant by chi-square test （P〈 0.05）.③ Taking the symmetricity of both the dentition and treatment planning into consideration,19.4% of the patients in control group,45.5% in primary AOPC group and 86.7% in secondary AOPC group showed non conducive treatment planning to dental arch symmetry correction,the difference between groups is significant by chi square test （P〈0.05）.Conclusions AOPC before treatment and non-conducive treatment planning to dental arch symmetry,but not dentition asymmetry itself contribute to AOPC during orthodontic treatment.Significant difference between left side and right side saggital and vertical anchorage might be related to the occurrence of AOPC during orthodontic treatment.

关 键 词：前牙(牙合)平面倾斜 病因 牙弓不对称 矫治设计 

分 类 号：R783.5[医药卫生—口腔医学]