不等抗力偶直立下颌高位近中阻生第二磨牙的临床研究  

A clinical study on the asymmetric couple in uprighting the highly and mesially impacted mandibular second molar

作　　者：马晓晴[1] 孙建锋 叶茂[1] 邢允波 邓学韬 朱梦娇 许衍 MA Xiaoqing;SUN Jianfeng;YE Mao;XING Yunbo;DENG Xuetao;ZHU Mengjiao;XU Yan(Department of Orthodontics,Shanghai Xuhui District Dental Center,Shanghai 200032,China)

机构地区：[1]上海市徐汇区牙病防治所口腔正畸科,上海200032 [2]宁波口腔医院生物材料与组织再生工程实验室,浙江宁波315000 [3]上海市口腔医院口腔正畸科,上海市颅颌面发育与疾病重点实验室,上海200001

出　　处：《口腔医学》2023年第9期803-807,共5页Stomatology

基　　金：上海市卫生健康委员会面上项目(202040495);徐汇区医学科研项目(SHXH201915)。

摘　　要：目的 评价不等抗力偶系在直立下颌高位近中阻生第二磨牙时的临床疗效。方法 选择下颌第二磨牙近中高位阻生青少年病例18例。在同侧第一磨牙颊侧外斜线植入微种植钉1枚,种植钉与同侧后牙段形成支抗侧,在第二磨牙远颊放置小方管,NiTi片段弓就位后双侧形成不对称力偶,待其基本直立后调整颊管至正常位置改善咬合。采用Graphpad Prism 6.0软件包对治疗前、后数据进行配对t检验。结果 所有倾斜磨牙均直立,治疗过程中无咬合干扰,治疗结束局部咬合关系良好,无牙根吸收。相邻第一磨牙远中牙槽骨高度明显增加,其近中颊尖到下颌平面的垂直距离保持稳定。结论 微种植钉联合NiTi片段弓形成的不等抗力偶系可有效直立下颌高位近中阻生第二磨牙,并有效控制其垂直向位置。Objective To evaluate the clinical efficacy of asymmetric couple in uprighting the highly and mesially impacted mandibular second molar.Methods Eighteen adolescents with highly and mesially impacted mandibular second molars were selected.One miniscrew was implanted into the buccal shelf.The miniscrew and the posterior segment constituted the anchorage.The tube was bonded on the disto-buccal side of the second molar.After the NiTi segmental archwire was placed,the asymmetric couple was formed on both sides.After they were almost uprighted,the position of the buccal tube was adjusted to improve the occlusion.Graphpad prism 6.0 software package was used for paired t-test.Results All tilted molars were uprighted,and there was no occlusal interference during the treatment.The final local occlusion was good,and no obvious root resorption happened.The height of the distal alveolar bone of the adjacent first molar increased significantly,and the vertical distance from the mesial buccal cusp to the mandibular plane remained stable.Conclusion The asymmetric couple formed by miniscrew and NiTi segmental archwire can effectively erect the highly impacted mandibular second molar and control its vertical position at the same time.

关 键 词：微种植钉 磨牙近中倾斜 不等抗力偶 NiTi片段弓 

分 类 号：R783.5[医药卫生—口腔医学]