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目的分析探讨MBT直丝弓技术矫治安氏Ⅱ类1分类错的临床效果。方法选择2008年1月至2010年1月在我院就诊的22例成年人安氏Ⅱ类1分类并开患者,随机分为观察组14例和对照组8例,观察组采用MBT直丝弓矫治器治疗,对照组采用传统直丝弓矫治器治疗。两组均在治疗前后拍摄头颅侧位片,观察记录两组治疗前后临床效果。结果两组患者均较治疗前有效,且观察组治疗效果更明显(P<0.05);观察组SNA、ANB、LI-MP、MP-SN治疗后减少,但差异无统计学意义(P>0.05);U1-SN、U1-L1治疗前后差异有统计学意义(P<0.05),治疗前开牙台7mm,治疗后OB2mm,恢复正常覆覆盖,治疗前后差异有统计学意义(P<0.05)。结论MBT直丝弓矫治技术临床操作简单,牙齿定位准确,可简化矫治程序和缩短治疗时间,值得临床推广。
Objective To analyze the clinical effect of treating the Class Ⅱ division 1 malocclusion with the technique of straight wire archwire (MBT). Methods Twenty-two adults with Class Ⅱ division 1 disease who were treated in our hospital from January 2008 to January 2010 were randomly divided into observation group (n = 14) and control group (n = 8). The observation group was treated with MBT straight wire Bow appliance treatment, the control group using the traditional straight wire appliance treatment. Both groups were taken before and after treatment of cephalometric slices, observed and recorded before and after treatment in both groups clinical effect. Results The two groups of patients were more effective than before treatment and the treatment group was more effective (P <0.05). The SNA, ANB, LI-MP and MP-SN in observation group decreased after treatment, but the difference was not statistically significant (P <0.05). There was significant difference between U1-SN and U1-L1 before and after treatment (P <0.05) ). Conclusions MBT straight wire appliance is simple in clinical practice and accurate in positioning the teeth, which can simplify the procedure and shorten the treatment time, which is worthy of clinical promotion.