不同支抗控制可影响拔牙矫治中上颌第3磨牙的位置  

Different anchorages can affect the position of maxillary third molars in extraction treatment

作　　者：贾俊 古力巴哈·买买提力[2] 李兆阳 胡义春 巴哈尔尼萨·热扎克 Jia Jun;Gulibaha·Maimaitili;Li Zhaoyang;Hu Yichun;Bahaernisa·Rezhake(Xinjiang Medical University,Urumqi 830011,Xinjiang Uygur Autonomous Region,China;Department of Stomatology,the Fifth Affiliated Hospital of Xinjiang Medical University,Urumqi 830011,Xinjiang Uygur Autonomous Region,China)

机构地区：[1]新疆医科大学,新疆维吾尔自治区乌鲁木齐市830011 [2]新疆医科大学第五附属医院口腔科,新疆维吾尔自治区乌鲁木齐市830011

出　　处：《中国组织工程研究》2020年第2期192-196,共5页Chinese Journal of Tissue Engineering Research

基　　金：国家自然科学基金(81860194),项目负责人:古力巴哈·买买提力~~

摘　　要：背景:在正畸治疗中,不同的支抗控制对上颌第3磨牙的影响会有所差异,这是否能够影响其正常萌出尚不可知。目的:探究采用PASS(pysiologic Anchorage Spee-wire System)生理支抗矫治技术治疗对阻生上颌第3磨牙的影响,为临床应用提供参考。方法:试验对象为30例PASS矫治技术和MBT(mclaughlin bennett trevisi)直丝弓矫治技术治疗的上颌第3磨牙存在的患者,并均采用拔除4个第1前磨牙的治疗方案,测量患者治疗前和治疗后第3磨牙相关的角度和线距并进行自身前后对比和统计学分析。研究方案的实施符合新疆医科大学第五附属医院对研究的相关伦理要求。参与试验的患病个体及监护人对试验过程完全知情同意。结果与结论:①PASS组治疗前后∠UM3-HP,∠UM2-HP及U-ES均明显增加(P=0.00),UM3-OP显著(P=0.00),说明PASS组中上颌第2磨牙、第3磨牙变得更直立,萌出间隙更大,更有利于其萌出;②与PASS组相比,MBT组上颌第3磨牙倾角变化量更大,而PASS组的垂直向萌出速率相对较大;③结果说明,在拔除第1前磨牙的正畸治疗中,PASS和MBT均能够改善第3磨牙的萌出角度和萌出间隙,使其更易萌出。BACKGROUND:In orthodontic treatment,different anchorage controls will make different effects on the maxillary third molar.Whether this can affect the normal eruption of maxillary third molar remains unclear.OBJECTIVE:To explore the effect of Physiologic Anchorage Spee-Wire System(PASS)treatment on impacted maxillary third molars,and to provide reference for clinical application.METHODS:Thirty patients with maxillary third molars were treated with PASS and 30 patients were treated with McLaughlin,Bennett,and Trevisi(MBT).All patients chose the plan of extracting four first premolars.The angles and distances were measured before and after treatment and statistical analysis was performed.The study was in accordance with the ethical requirements of the Fifth Affiliated Hospital of Xinjiang Medical University.All participants and their guardians signed the informed consents.RESULTS AND CONCLUSION:(1)In the PASS group,the∠UM3-HP,∠UM2-HP and U-ES were significantly increased(P=0.00),and the UM3-OP was significantly decreased(P=0.00),indicating that the maxillary second molar and third molar became more upright,and larger eruption space contributed to eruption.(2)Compared with the PASS group,the obliquity of the maxillary third molar in the MBT group showed significant change,while the vertical eruption rate in the PASS group was relatively larger.(3)These results imply that both PASS and MBT can improve the eruption angle and space of the third molar,and make it easier to erupt in orthodontic treatment of extraction of the first premolar.

关 键 词：PASS矫治器 上颌第3磨牙 MBT治疗 阻生 支抗 

分 类 号：R454[医药卫生—治疗学] R496[医药卫生—临床医学]