摘要
目的探讨倾斜或水平阻生下颌第三磨牙的全程镍钛弓丝正畸竖直方法.方法:以伴有1个或2个下颌第三磨牙倾斜或水平阻生的18例成人各类错[牙合]畸形患者为研究对象,全程采用不同尺寸镍钛弓丝,配合必要的镍钛推簧或弹力牵引,逐步引导阻生牙竖直、萌出.矫治前后分别拍X线片,对其矫治效果进行分析、比较.结果:18例患者均取得了较好的疗效,倾斜或水平阻生的下颌第三磨牙全部竖直萌出到正常的咬合平面高度,并与对牙合牙有良好的咬合接触关系,与邻牙也有良好的邻接关系.X线片显示原阻生牙所占位置骨组织改建良好,自身牙根牙周正常.正畸竖直时间为3~6个月,平均4.8个月.结论:全程镍钛弓丝正畸矫治能有效地竖直倾斜或水平阻生的下颌第三磨牙,具有易操作、无创伤、依从小、效率高、效果好等优点.
Objective To investigate the orthodontic strategies for uprighting of obliquely or horizontally impacted mandibular third molars with nickel-titanium archwires throughout the course of treatment.Methods 18 adult patients with malocclusion of different kinds with 1 or 2 obliquely or horizontally impacted mandibular third molar(s)were studied.Different sizes of nickel-titanium archwires in conjunction with Ni-ti pushing spring or elastic traction were applied to guide the impacted molars to stand upright and sprout step by step in the whole treatment.X-ray films were taken before and after treatment,and the treatment effect was analyzed and compared.Results All the 18 cases had good curative effect.The obliquely or horizontally impacted mandibular third molars erupted vertically to the normal occlusal plane height,and had good occlusal contact with the maxillary teeth and good adjacent relationship with the adjacent teeth.X-ray showed that the bone tissue of the impacted molars originally was reconstructed well and their roots and periodontium were normal.The orthodontic uprighting time ranged from 3 to 6 months,with an average of 4.8 months.Conclusion The whole orthodontic treatment with Ni-ti archwire can effectively upright obliquely or horizontally impacted mandibular third molars,which is easy to operate,non-invasive,little compliance,high efficiency and good effect.
作者
郑晓丹
罗小安
ZHENG Xiao-dan;LUO Xiao’an(Department of Stomatology,Xiamen Medical College,Fujian Province,361023,China;Department of Orthodontics,Stomatological Hospital of Xiamen Medical College,Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment,Fujian Province,361008,China)
出处
《中国医疗美容》
2020年第7期101-106,共6页
China Medical Cosmetology
基金
厦门医学院金课“口腔解剖生理学”,项目编号:XBJK2020013。
关键词
下颌第三磨牙阻生
镍钛弓丝
正畸竖直
Impacted mandibular third molar
Nickel-titanium archwire
Orthodontic uprighting
