摘要
目的比较严重骨性Ⅲ类错牙合患者双颌正颌手术治疗各阶段硬组织的变化及其术后稳定性。方法选择30例严重骨性Ⅲ类错牙合患者进行双颌手术,采用SPSS 20.0软件对治疗前(T_0)、手术前(T_1)、手术后6周(T_2)以及治疗结束时(T_3)相关硬组织测量项目进行t检验。结果 T_0与T_1相比,上下切牙的相应测量项目发生了显著变化(P<0.05);T_1与T_2相比,上下颌各硬组织标志点分别向前上和后上移位(P<0.05),SNA角、SNB角、ANB角、Wit值均发生了显著变化(P<0.05),OP-SN增大显著(P<0.05),牙合平面发生了逆时针方向的旋转,上面高(N-ANS)、下面高(ANS-Me)变化显著(P<0.05),垂直比例更为协调,均获得了良好咬合关系;T_2与T_3相比,上下颌各硬组织标志点分别有轻度的后下、前上移位趋势,但其变化无统计学意义。结论双颌手术在上颌畸形治疗、面部垂直比例关系改善、牙合平面倾斜度的改变、咬合关系改变方面效果显著,其术后稳定性较好。
Objective To analyze the changes in different stages of bimaxillary orthognathic surgery in patients with severe Skeletal Class Ⅲ malocclusion,and compare their postoperative stability. Methods 30 patients with severe skeletal Angel Class Ⅲ malocclusion were selected and treated with bimaxillary orthognathic surgeries. SPSS20.0 software package was used to analyze the changes of the hard tissues at the following stages： before treatment（ T0）; before surgery（T1）; 6 weeks after surgery（T2）; after treatment（T3）.Results Comparing T1 with T0,significant changes occurred in the corresponding measurements of both upper and lower incisors（P〈0.05）. Comparing T2 with T1,the maxilla moved forward and downward,while the mandible moved backward and upward（P〈0.05）.The SNA angel,the SNB angel,the ANB angel and Wits appraisal varied significantly（ P〈0.05）. OP-SN increased significantly（ P〈0.05）.The occlusal plane had a counterclockwise rotation（ P〈0.05）. The upper and lower facial height changed significantly（ P〈0.05）and the vertical facial proportions became more harmonious. All the patients had established good occlusion relationship. Comparing T3 with T2,the landmarks of the maxilla and mandibular had slightly relapsed,but the changes were not statistically significant. Conclusion Bimaxillary surgery can correct maxilla deformity,improve vertical facial proportions,change occlusal plane inclinations,improve the occlusion relationship significantly,and have a good postoperative stability.
作者
乔青芳
王旭霞
马丹
李涛
刘端芹
张君
QIAO Qingfang; WANG Xuxia; MA Dan; LI Tao; LiU Duanqin;ZHANG Jun(Shandong Provincial Key Laboratory of Oral Tissue Regeneration, School of Stomatology, Shandong University, Ji＇nan 250012, China)
出处
《口腔医学》
CAS
2018年第10期908-911,共4页
Stomatology
基金
省教科文专项课题(2011107)
市科学技术发展计划项目(201506010)
关键词
骨性Ⅲ类错牙合畸形
双颌手术
头影测量
硬组织变化
skeletal class Ⅲ malocclusion
bimaxillary surgery
X-ray cephalometry
changes of hard tissues
