Twinblock矫治器对颌面部软硬组织生长的改良作用  

Hard-soft tissue changes with the Twinblock appliance in Class Ⅱ malocclusion patients

作　　者：崔丽娟[1] 刘亚非[2] 左艳萍[2] 吕童[1] 刘昕[3] 刘学聪[4] 陈文静[5] 

机构地区：[1]河北医科大学基础医学院,河北省石家庄市050017 [2]河北医科大学第一医院正畸科,河北省石家庄市050031 [3]河北医科大学临床医学院,河北省石家庄市050031 [4]河北省儿童医院,河北省石家庄市050031 [5]河北医科大学口腔医学院,河北省石家庄市050017

出　　处：《中国组织工程研究与临床康复》2010年第9期1572-1576,共5页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：河北省科学技术研究与发展指导计划(062761380)~~

摘　　要：背景:国内外学者研究发现Twinblock矫治器能有效促进安氏Ⅱ类错患者的下颌骨生长,并改善其下颌后缩的侧貌。那么Twinblock矫治器除了促进下颌生长外,还具有哪些生长改良的作用而改变了Ⅱ类错患者颅颌面的软硬组织结构呢?目的:观察Twinblock矫治器治疗后Ⅱ类错者颅颌面软硬组织的改变。方法:选择河北医科大学附属口腔医院正畸科的替牙晚期和恒牙早期安氏Ⅱ类1分类错患者48例,男30例,女18例,年龄9.58～12.37岁,平均11.6岁。接受Twinblock治疗的恒牙早期安氏Ⅱ类1分类患者27例为治疗组,根据病例对照原则,选择放弃治疗的矫治恒牙早期安氏Ⅱ类1分类的患者21例为对照组。采用头影测量分析,比较治疗组治疗前后和对照组的变化。结果与结论:通过治疗组和对照组的对比分析,发现Twinblock矫治器一方面能增强自然生长过程中下颌长度的增长,出现上唇突度的减小和颏唇沟角减小的趋势,另一方面,Twinblock矫治器能抑制自然生长过程中面部垂直距离减小和面突度增加的趋势,使治疗后上下颌骨间在矢状方向的位差缩小,面型趋于协调。提示Twinblock对颌面部软硬组织有生长改良作用,Twinblock矫治器对安氏Ⅱ类错患者生长促进和生长抑制协同作用,使Ⅱ类错患者的骨面型更加协调。BACKGROUND：Twin block appliance has been shown to effectively promote mandibular bone growth of Class Ⅱ malocclusion patients and improve lateral appearance of mandibular retrusion.The other improvement of Twin block appliance on hard-soft tissues remains unclear.OBJECTIVE：To assess the hard-soft tissue changes following Twinblock appliance treatment.METHODS：A total of 48 adolescent patients,30 males and 18 females,aged 11.6 years（range 9.58-12.37） with Class Ⅱ malocclusion were selected from Department of Orthodontics,Affiliated Stomatology Hospital of Hebei Medical University.Of them,27 were treated with Twinblock appliance as the treatment group,and 21 adolescent patients without treatments were selected as the control group.Cephalonetric analysis was used to compare the changes before and after treatment.RESULTS AND CONCLUSLON：Comparative analysis showed that Twinblock could effectively adjust or improve the effect of the natural growth,reduced upper lip convexity and mentolabial furrow angle.Moreover,Twinblock inhibited facial vertical distance reduction and facial convexity increase to decrease the potential differences between maxillary and mandibular bones in sagittal plance.Results show that Twinblock could effectively improve the profile of soft-tissues of Class Ⅱ malocclusion cases.

关 键 词：功能矫治器 TWINBLOCK Ⅱ类错 生长改良 软组织侧貌 

分 类 号：R772.2[医药卫生—眼科]