两种矫治技术对安氏Ⅱ~1类错牙合畸形患者口腔颌面部软硬组织的影响  

Effects of Two Techniques Treating ClassⅡ1 Patients with Malocclusion on Oral Maxillofacial Soft and Hard Tissues

作　　者：尹雪莲[1] 杨光[1] 王鹏[1] 苏哲君[1] 霍峰[1] YIN Xuelian;YANG Guang;WANG Peng;SU Zhejun;HUO Feng(Department of Stomatology,the Affiliated Hospital of chengde medical college,Chengde 067000,Hebei,China)

机构地区：[1]承德医学院附属医院口腔科,河北承德067000

出　　处：《贵州医科大学学报》2020年第6期712-716,共5页Journal of Guizhou Medical University

基　　金：河北省科技计划项目(17277760D);承德市科技支撑计划项目(201801A023)。

摘　　要：目的:比较生理性支抗Spee氏弓矫正器(PASS)矫治技术与麦克劳林·贝内特·特雷维斯(MBT)直丝弓矫治技术治疗安氏Ⅱ~1类错牙合畸形伴上、下牙列中度拥挤患者排齐阶段对口腔颌面部软硬组织的效果。方法:42例安氏Ⅱ~1类错牙合畸形伴上、下牙列中度拥挤患者,分为观察组(PASS,n=16例)和对照组(MBT加口外弓或Nance弓或TPA治疗,n=26例),采用Dolphin测量所有患者治疗前及排齐后的头颅侧位片,比较2组患者的平均治疗时间、硬组织指标(∠SNA、∠SNB、∠ANB、∠U1-NA、U1-NA距、∠L1-NB、L1-NB距、∠U1-SN、∠L1-MP及∠MP-SN)和软组织指标(面型角∠FAC、鼻唇角∠NLA、上唇突度ULP及下唇突度LLP)。结果:观察组排齐阶段平均时间为(6. 2±2. 12)月,与对照组(5. 0±1. 86)月比较,差异有统计学意义(P <0. 05);2组患者治疗前各软、硬组织指标比较,差异无统计学意义(P> 0. 05);观察组患者排齐后∠U1-NA、U1-NA距、∠L1-NB、L1-NB距、∠U1-SN、∠L1-MP及ULP等小于对照组(P <0. 05),∠NLA则大于对照组(P <0. 05),其余指标比较差异无统计学意义(P> 0. 05);对照组∠U1-NA、U1-NA距、∠L1-NB、L1-NB距、∠U1-SN、∠L1-MP、∠NLA及ULP等指标排齐前后差异有统计学意义(P <0. 05),观察组各软、硬组织指标排齐前后差异无统计学意义(P> 0. 05)。结论:PASS矫治技术在治疗安氏Ⅱ~1类错牙合畸形的排齐阶段不会造成前牙的唇倾,可高效、健康地促进牙齿排齐,且一定程度上改善患者面容。Objective:To compare the changes of soft and hard tissues of oral maxillofacial in patients with classⅡ1 malocclusion with upper and lower dentition crowding at the stage of alignment by PASS and MBT techniques.Methods:42 patients with classⅡ1 malocclusion with moderate crowding of upper and lower dentition were selected,and all of them were divided into observation group(PASS,n=16)and control group(MBT plus external arch or Nance arch or TPA,n=26).The control group was treated with MBT straight wire arch technique plus external arch or Nance arch or TPA.The observation group was treated with PASS technique.The lateral cephalic plates of all patients before and after alignment were measured by Dolphin,and the average treatment time,hard tissue indexes and soft tissue indexes between the two groups were compared and analyzed.Results:The average time of alignment in the observation group was(6.2±2.12)months,the difference was statistically significant compared with(5.0±1.86)in the control group(P<0.05).The difference was not statistically significant in soft and hard tissues between the two groups before treatment(P>0.05).The∠U1-NA,U1-NA distance,∠L1-NB,L1-NB distance,∠U1-SN,∠L1-MP,∠NLA,ULP,LLP in the observation group After alignment were smaller than those in the control group(P<0.05)while∠NLA was larger than that of the control group(P<0.05);there was no significant difference between the other indexes(P>0.05).The difference before and after alignment between∠U1-NA,U1-NA distance,∠L1-NB,L1-NB distance,∠U1-SN,∠L1-MP,∠NLA,ULP in the control group was statistically significant(P<0.05).The difference before and after alignment between soft and hard tissue indexes was no statistically significant in the observation group(P>0.05).Conclusion:Compared with MBT straight wire technique,PASS technique is more effective and healthy in the treatment of classⅡ1 malocclusion with moderate crowding of upper and lower dentition and can improve the patients'facial appearance to some extent.

关 键 词：牙畸形 安氏Ⅱ1类错牙合畸形 PASS矫治技术 MBT直丝弓矫治技术 硬组织 软组织 排齐阶段 

分 类 号：R783[医药卫生—口腔医学]