细丝弓技术在安氏Ⅱ类1分类拔牙患者直丝弓矫治的临床研究  

Light archwire technique in Class Ⅱ division 1 extraction cases with straight-wire appliances

作　　者：李国永 齐元园 蔡斌[3] 徐向华 程慧娟 王燕玲 LI Guoyong;QI Yuanyuan;CAI Bin;XU Xianghua;CHENG Huijuan;WANG Yanling(Oral Department,Shandong Maternal and Child Health Hospital,Jinan 250014,China)

机构地区：[1]山东省妇幼保健院口腔科,山东济南250014 [2]东营市人民医院口腔科,山东东营257091 [3]广州中山大学光华口腔医学院口腔医院正畸科,广东广州510055

出　　处：《口腔医学》2023年第12期1086-1090,共5页Stomatology

摘　　要：目的通过细丝弓技术在安氏Ⅱ类1分类拔牙患者直丝弓矫治的临床应用,观察矫治前后牙颌和软组织侧貌的变化,为临床正畸矫治提供参考。方法本研究采用回顾性的研究方法,纳入符合研究标准的24例安氏Ⅱ类1分类拔除4颗第一前磨牙,粘结MBT直丝弓矫治器,采用细丝弓技术矫治的患者。正畸治疗前后拍摄头颅侧位片,使用SPSS 15.0软件进行配对t检验分析,P<0.05有统计学意义。结果24例患者正畸治疗完成后,磨牙及尖牙中性,覆牙合覆盖正常,U1-NA角和L1-MP角分别减小15.78°和6.18°,上下颌切牙切端内收7.56和2.27 mm,下颌磨牙近中移动4.41 mm,上颌磨牙近中移动1.17 mm。下颌切牙压低2.42 mm,下颌磨牙伸长1.21 mm。然而,上颌切牙和磨牙垂直向无明显变化。软组织侧貌改变明显,NLA角增大13.77°上下唇突点相对于审美平面分别减小2.90 mm和3.83 mm。结论安氏Ⅱ类1分类拔牙患者粘结直丝弓矫治器,采用细丝弓技术矫治,矢状方向和垂直方向支抗控制良好,软组织侧貌改善明显。Objective To evaluate dentoskeletal and soft-tissue profile changes in Class Ⅱ division 1 extraction cases treated by the light archwire technique with straight-wire appliances.Methods A total of 24 Class Ⅱ division 1 cases met the inclusion criteria and were treated with the light archwire technique with a straight-wire appliance.Lateral cephalometric measurements were performed before and after treatment,and the statistical analysis was performed using SPSS 15.0 software.Significant changes were evaluated by paired ttests at a 0.05 significance level.Results After performing the active treatment in 24 subjects,the molar and cuspid relationships were neutral,and normal overjets and overbites were established.U1-NA(°)and L1-MP(°)decreased by 15.78°and 6.18°,respectively.Maxillary and mandibular incisors retracted by 7.56 mm and 2.27 mm,respectively.The mesial movement of the mandibular molars was 4.41 mm,and the mesial movement of the maxillary molars was 1.17 mm.The lower incisors were intruded by 2.42 mm,and the lower molars were extruded by 1.21 mm.However,vertical changes in the maxillary incisors and molars were not significant.Remarkable softtissue changes were noted after orthodontic treatment.The NLA increased by 13.77°.The prominence of the upper and lower lips to the aesthetic plane were significantly decreased by 2.90 mm and 3.83 mm,respectively.Conclusion The Class Ⅱ division 1 patients treated with the light archwire technique with a straight archwire appliance showed good control of sagittal and vertical dimensions after the extraction of four first premolars,and the profile was significantly improved.

关 键 词：安氏Ⅱ类1分类 细丝弓技术 Ⅱ类颌间牵引 直丝弓矫治器 

分 类 号：R783.5[医药卫生—口腔医学]