固定和透明矫治器治疗前牙深覆(牙合)的牙根吸收  

Root Resorption in Treatment of Deep Overbite by Clear Aligners and Fixed Appliances

作　　者：朱晨静 郑雅 雷浪[1] ZHU Chenjing;ZHENG Ya;LEI Lang(Department of Orthodontics,Nanjing Stomatological Hospital,Medical School of Nanjing University,Nanjing 210008,China.)

机构地区：[1]南京大学医学院附属口腔医院·南京市口腔医院正畸科,江苏南京210008

出　　处：《口腔医学研究》2023年第2期113-117,共5页Journal of Oral Science Research

摘　　要：目的:比较透明矫治器和固定矫治器治疗前牙深覆(牙合)发生牙根吸收的情况,探索中切牙牙根吸收的影响因素。方法:收集南京市口腔医院2016~2021年完成正畸治疗的深覆(牙合)非拔牙成人患者,固定矫治器组21例,透明矫治器组15例。测量治疗前后前牙的根冠比、覆(牙合)、中切牙移动情况,SPSS 21.0软件行统计学分析。结果:秩和检验显示,两组之间牙根吸收差异有统计学意义(Z=-2.694,P=0.007);独立样本t检验显示,固定矫治器组深覆(牙合)矫治效果优于透明矫治器组(P=0.027);多元回归分析显示,中切牙倾斜角度变化、上下颌位置影响其牙根吸收(P<0.05)。结论:固定矫治的牙根吸收较透明矫治严重,可能与固定矫治实现更多的前牙压低和持续力有关。Objective:To compare the root resorption of non-extracted patients with deep overbite by clear aligners and fixed appliances,and to explore the influential factors of root resorption of central incisors.Methods:Twenty-one cases treated with fix appliances and 15 cases treated with clear aligners were selected.The panoramic radiographs and lateral view of the skull before and after treatment were examined.The root resorption and the effect of correcting deep overbite were compared.The influence factors of root resorption of central incisors were analyzed.Results:The difference of root resorption between two groups was statistically significant by Mann-Whitney U-test(Z=-2.694,P=0.07),while more overbite correction was observed in the fixed appliance group than the clear aligner group by two independent sample t-test(P=0.027).In addition,changes in the inclination of central incisor and maxilla-mandibular position significantly affected root resorption of central incisors by multivariate logistic regression analysis(P<0.07).Conclusion:Fixed appliance treatment leads to heavier root resorption in the central incisor,which might relate to its better correction of deep overbite and its application of continuous force.

关 键 词：牙根外吸收 固定矫治器 透明矫治器 深覆(牙合) 

分 类 号：R783.5[医药卫生—口腔医学]