NTA矫治器配合MEAW技术矫治因舌习惯开牙合患者的临床对比研究

目的:比较用MEAW技术矫治联合佩戴NTA矫治器与单一MEAW技术矫治因舌习惯导致开牙合的AngleⅡ类患者的临床疗效。方法:选择西安交通大学口腔医院2011年1月-2018年1月正畸科门诊就诊的30例因舌习惯导致开牙合用MEAW技术矫治的患者,随机分为两组,每组15例。实验组:MEAW技术矫治患者,佩戴NTA矫治器12个月;对照组:单一MEAW技术矫治12个月。将治疗前后患者的头颅定位侧位片用Steiner和Downs分析法测量,再用SPSS20.0统计软件进行配对t检验。结果:实验组:矫治前后L1-NB(°)、L1-NB(mm)比较,有显著性差异(P<0.05);ANB、GoGn-SN、PP-MP、ODI、U1-NA(mm)、L1-MP(mm)、U1-PP(mm)矫治前后比较,有非常显著性差异,具有统计学意义(P<0.01);对照组:矫治前后UI-NA比较,有显著性差异(P<0.05);ANB、U1-PP(mm)、L6-MP矫治前后比较,有非常显著性差异,具有统计学意义(P<0.01)。两组比较L1-NB(°)、UI-PP、L6-MP有显著性差异(P<0.05),GoGn-SN、PP-MP、ODI有非常显著性差异,具有统计学意义(P<0.01)。临床结果显示实验组开牙合畸形纠正疗效显著,对照组开牙合矫治效果反复,矫治时间较长。结论:用MEAW技术矫治因舌习惯导致开牙合患者,配合NTA矫治器,患者前牙覆牙合加深,下颌位置改变,牙性和轻度开牙合矫正,面型改变明显,效果良好。

Clinical Comparison of Patients with Tongue Habit Opening and Closing by NTA and MEAW Technique

Objective Angle Ⅱ patients with open bite due to tongue habits were treated with MEAW technique.The experimental group was treated with NTA appliance and the control group was treated with single MEAW technique.Methods Thirty patients with open bite were randomly selected from the orthodontic clinic of Xi’an Jiaotong University from 2011 to 2018.They were divided into two groups:The experimental group received MEAW technique for 15 patients wearing NTA appliance for 12 months,and 15 patients in the control group were treated with single MEAW technique for 12 months.Method measurement,then paired t test with Spss 20.0 statistical software.Results The experimental group (P<0.05),has significant statistical significance:L1-NB (°),L1-NB (mm)(P<0.01).The significant statistical significance was:ANB,GoGn-SN,PP-MP,ODI,U1-NA (mm),L1-MP (mm),U1-PP (mm)(P<0.05).The control group has significant statistical significance:UI-NA has very significant statistical significance:ANB,U1-PP (mm),L6-MP(P<0.01).The experimental group compared with the control group:has significant statistical significance:L1-NB (0),UI-PP,L6-MP(P<0.05).has very significant statistical significance:GoGn-SN,PP-MP,ODI(P<0.01).The clinical results showed that the correction effect of open bite in the experimental group was remarkable,while that in the control group was the same but the correction time was longer.Conclusion Compared the experimental group wearing NTA appliance with the control group using single MEAW technology,in the experimental group,overbite in anterior teeth is deepening,mandibular position changes,dental and mild openbite are corrected,facial profile is improved.