上颌窦对无托槽隐形矫治磨牙后移影响的研究  

Effects of Maxillary Sinus on Molar Distalization with Clear Aligners

作　　者：黄荣彩 郑铨艺 龙金凤 熊国平 HUANG Rongcai;ZHENG Quanyi;LONG Jinfeng;XIONG Guoping(Department of Orthodontics,Shenzhen Hospital(Futian)of Guangzhou University of Chinese Medicine,Shenzhen 518034,China;Department of Otolaryngology Head and Neck Surgery,Shenzhen People's Hospital,Shenzhen 518020,China;Department of Orthodontics,Shenzhen People's Hospital,Shenzhen 518020,China)

机构地区：[1]广州中医药大学深圳医院(福田)口腔正畸科,广东深圳518034 [2]深圳市人民医院耳鼻咽喉头颈外科,广东深圳518020 [3]深圳市人民医院口腔正畸科,广东深圳518020

出　　处：《口腔医学研究》2024年第11期972-977,共6页Journal of Oral Science Research

基　　金：深圳市科技创新项目(深圳市科技创新委员会资助)(编号:JCYJ20180228164315116)。

摘　　要：目的:利用锥形束CT(cone-beam computed tomography, CBCT)研究上颌窦底与磨牙牙根位置的关系,是否对无托槽隐形矫治磨牙后移的有效率及整体后移率产生影响。方法:本研究为前瞻性研究,纳入13例采用无托槽隐形矫治技术推上颌磨牙向后的病例,根据牙根是否嵌入上颌窦分为嵌入组18颗,非嵌入组27颗。正畸治疗前及上颌磨牙后移到位后拍摄CBCT,运用Mimics软件对上颌骨进行重叠,建立以牙合平面为基准的三维坐标,测量磨牙后移的距离、轴倾度、转矩角的变化。结果:无托槽隐形矫治技术能有效地远中移动上颌磨牙,牙冠远中移动有效率嵌入组为86.35%,非嵌入组为79.24%。牙根整体远移率嵌入组为59.48%,非嵌入组为76.46%。远中倾斜角度嵌入组为2.43°,非嵌入组为3.51°。颊向转矩角度嵌入组为4.29°,非嵌入组为3.28°。上述指标两组间差异均不具有统计学意义。结论:上颌窦底与牙根位置关系的不同,对上颌磨牙后移的有效率及整体远移率没有影响。Objective:To study the relationship between maxillary sinus and root position of molars using cone-beam computed tomography(CBCT)and examine whether it affects the efficiency and bodily movement rate of molar distalization with clear aligners.Methods:This prospective study included 13 patients who used clear aligner techniques to push 45 maxillary molars backward.There were 18 molars whose roots were embedded in the maxillary snus(embedded group)and 27 molars whose roots were not(non-embedded group).Before orthodontic treatment and after the upper molars were moved back into position,CBCT was taken.Mimics software was used to overlap the maxilla and establish three-dimensional coordinates based on the occlusal plane.Changes in the distance,axial inclination,and torque angle of the molar distalization were measured.Results:The clear aligner technique could effectively move the maxillary molars in a distal direction.The effective rate of crown distal movement in the embedded group was 86.35%,and in the non-embedded group was 79.24%.The overall effective rate of root distal migration in the embedded group was 59.48%,and in the non-embedded group was 76.46%.The distally tipping angle of the embedded group was 2.43°,and that of the non-embedded group was 3.51°.The buccal tipping angle of the embedded group was 4.29°,and that of the non-embedded group was 3.28°.There was no statistically significant between two groups.Conclusion:The different relationship between maxillary sinus and molar root position has no significant effect on the efficiency and bodily movement rate of maxillary molar distalization.

关 键 词：上颌窦 锥形束CT 无托槽隐形矫治 推磨牙向后 

分 类 号：R783.5[医药卫生—口腔医学]