论文部分内容阅读
牙列拥挤患者由于尖牙位置唇向低位,减数第一前磨牙矫治初期常规排齐牙列的过程中,由于弓丝结扎常出现邻牙压低形成局部开牙合或者造成切牙唇倾产生不利于矫治目标的牙齿移动,无疑会增加疗程,降低矫治效率[1-2]。片段弓技术为局部弓丝,操作简单,设计灵活,矫治初期即可牵尖牙向远中,由于采用关闭曲关闭间隙,无弓丝摩擦力,更有利于矫治目标的实现[3-5]。?一、材料和方法 1.病例资料:病例来源为2006年3月至2012年3月我校附属医院口腔正畸门诊患者23例,男9例,女14例,平均年龄13.5岁,入选病例均因牙列拥挤采用拔除第一前磨牙创造间隙,用于排齐牙列,中、强度磨牙支抗。
Teeth crowded patients due to the position of the fang to the lower lip, minus the number of the first premolar orthodontic dentition alignment process, the arch wire ligation often appear adjacent to the formation of partial occlusion of lower teeth open or cause incisors lips lip tilt Detrimental to the correction of the target of tooth movement, will undoubtedly increase the course of treatment, reduce the efficiency of correction [1-2]. Fragment arch technology for the local arch wire, simple operation, flexible design, orthodontic treatment can be held in the early canine farther, due to close the song off the gap, no arch wire friction, more conducive to the realization of the goal of treatment [3-5] . First, the material and methods 1 case data: the source of the cases from March 2006 to March 2012 23 cases of Oral Orthodontics in our hospital Affiliated Hospital, 9 males and 14 females, mean age 13.5 years, selected cases Due to the crowding of the dentition, the first premolar is used to create the gap, which is used for aligning the dentition, medium and strong molar support.