双钥匙曲近中移动第一磨牙的临床应用  

A study of double keyhole loops in mandibular first molar moving forward bodily

作　　者：潘美珍[1] 肖珲[2] 何旭顺[1] 谭家莉[1] Pan Mei-zhen Xiao Hui He Xu-shun Tan Jia-li(Guanghua School of Stomatology, Sun Yat-Sen University, Guangdong Guangzhou 510055, China Department of Orthodontics, Guangdong Provincial Stomatological Hospital, Guangdong Guangzhou 510260, China)

机构地区：[1]中山大学光华口腔医学院.附属口腔医院正畸科,广东广州510055 [2]广东省口腔医院.南方医科大学附属口腔医院正畸科,广东广州510280

出　　处：《临床口腔医学杂志》2017年第1期21-23,共3页Journal of Clinical Stomatology

基　　金：广东省自然科学基金(2015A030313068);2015年中山大学光华口腔医学院创新人才培养项目(2015B005);中山大学2016年国家级大学生创新训练计划项目(201601097);中山大学2016年省级大学生创新训练计划项目(201601162)

摘　　要：目的:探讨运用双钥匙曲近中移动下颌第一磨牙纠正Ⅱ类错畸形的临床效果。方法:选择安氏Ⅱ类错畸形,需拔除下颌第二前磨牙、近中移动下颌第一磨牙以改善颌位关系的患者16例,年龄14~25岁。拔牙间隙处牙槽嵴高度和宽度均正常,运用双钥匙曲近中移动第一磨牙。结果:16例病例均实现下颌第一磨牙整体移动,无近中倾斜,无升高,第一磨牙与第一前磨牙接触关系良好,间隙完全关闭。结论:运用双钥匙曲矫治技术近中移动第一磨牙的临床效果稳定并能够实现整体移动。Objective： To evaluate the treatment outcome of double keyhole loops in moving mandibular first molar forward,which to correct the Angle Class Ⅱ disorder. Methods： Sixteen Class Ⅱ patients aged from 14-25 years were chosen,that all the lower second premolars of these cases were extracted with average fine height and width of bone in the extraction spot. Double keyhole loops were used to move the mandibular molars forward in order to correct distal molar relationship.Lateral cephalometric radiographs were taken and cephalometric analysis were done before and after treatment. Data were analyzed by using pairedt-test. Results： All the lower molars moved forward bodily with no inclination or elevation,and extraction spaces were closed with satisfied contact area between lower first premolars and first molars. Conclusion： It is efficient to use double keyhole loops in moving the distal first molar forward bodily.

关 键 词：双钥匙曲 安氏Ⅱ类错 下颌磨牙近中移动 

分 类 号：R783.5[医药卫生—口腔医学]