矢向引导型Twin-block矫治器对安氏Ⅱ类上颌骨及磨牙的远移作用  

Evaluation of the maxillary basal bone and molar change of skeletal Class Ⅱ malocclusion treated by sagittal-guidance Twin-block

作　　者：易颖煜 赵宁[1] 沈刚[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院·口腔医学院口腔正畸科.上海市口腔医学重点实验室.上海200011

出　　处：《上海口腔医学》2016年第4期456-460,共5页Shanghai Journal of Stomatology

摘　　要：目的:探讨矢向引导型Twin-block(SGTB)矫治器对生长发育期安氏Ⅱ类1分类患者的上颌骨及上颌磨牙的作用。方法:选取34例利用SGTB矫治器进行矫形治疗的生长发育期安氏Ⅱ类1分类错畸形病例,二期正畸治疗未拔牙,采用Pancherz分析法定量研究治疗前、后上颌骨及上颌磨牙的后移量,利用SPSS20.0软件包评价其疗效。结果:矫形治疗后,上颌磨牙显著后移(1.33 mm,P<0.01),上颌骨位置显著向后(0.68 mm,P<0.01);二期治疗结束后,上颌磨牙轻度后移(0.53 mm,P>0.05),上颌骨位置显著后移(0.65 mm,P<0.05)。结论:SGTB矫治器对安氏Ⅱ类1分类生长发育期错畸形患者能有效地发挥上颌磨牙远移及上颌骨后移作用。PURPOSE： To investigate the effects of sagittal-guidance Twin-block appliance on maxillary basal bone and buccal segment distalization in developing Angle Class Ⅱ division 1 malocclusion. METHODS： The measurement data of anterior-posterior direction and vertical dimension between pretherapy and post-treatment, including 34 developing Angle Class Ⅱ division 1 patients with sagittal-guidance Twin-block and non-extraction treatment, were quantitatively analyzed by X-ray cephalometry and Pancherz. SPSS 20.0 software package was used for statistical analysis. RESULTS： After orthopedic treatment, the maxilla significantly retruded （0.68 mm, P〈0.01）, the maxillary molars moved posteriorly （1.33 mm, P〈0.01）. After orthodontic treatment, the maxillary bone still turned out posteriorly （0.65 mm, P〈0.05）, and the molar teeth were slightly distalized （0.53 mm, P〉0.05）. CONCLUSIONS： The correction of developing Angle Class Ⅱ division 1 malocclusion can be achieved by sagittal-guidance Twin-block.

关 键 词：Sagital—guidance Twin—block矫治器 PANCHERZ分析法 安氏Ⅱ类1分类 

分 类 号：R783.5[医药卫生—口腔医学]