直丝弓与方丝弓矫治器的疗效比较(1)
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[摘要] 目的：应用PAR指数评价直丝弓矫治器与方丝弓矫治器的治疗效果。方法：回顾性分析本院2004年6月～2010年8月收治入院的80例采用直丝弓或方丝弓双颌固定矫治器完成治疗错胎畸形患者临床资料，随机分为直丝弓组和方丝弓组，每组40例，对两组患者的测量数据进行统计学检验。对治疗前后模型进行PAR指数测量，记录治疗前后PAR分值及其差值，以治疗前相同的PAR总分值者进行临床分析。结果：治疗后直丝弓组后牙排列的PAR分值低于方丝弓组(P<0.05)，后牙排列效果较方丝弓组好。两组患者治疗后其余各项PAR分值及治疗前后PAR差值均无统计学差异(P>0.05)。直丝弓组平均疗程缩短5.7个月。结论：直丝弓矫治器对牙齿排列尤其是后牙的定位较准确，在较短的时间内可取得与方丝弓矫治器相同的治疗效果，矫治效率较方丝弓矫治器高。
[关键词] 固定矫治器；疗效；评价；PAR指数
[中图分类号] R783 [文献标识码] A [文章编号] 1674-4721(2012)01(b)-183-02
The efficacy of straight arch wire and edgewise corrective appliances
DU LiJun
People's Hospital of Wangcang County in Sichuan Province, Wangcang 628200, China
[Abstract] Objective: To evaluate the efficacy of straight arch wire and edgewise removable appliances with PAR index. Methods: Clinical data of 80 cases of wrong tire deformity patients in our hospital from June 2004 to August 2010 were analyzed retrospectively , all patients were randomly divided into straight arch wire group and edgewise group, 40 cases in each group, the measured data of two groups was given statistical test. PAR index of Model were measured before and after treatment, PAR score and the difference were record, patients with the same total pre-treatment PAR scores were given clinical analysis. Results: After treatment, PAR score of posterior rank in the straight wire group was lower than the edgewise group (P<0.05), the posterior teeth arranged better than edgewise group. The remaining PAR scores and PAR difference of two groups were not statistically different (P>0.05). Treatment course of straight wire group was shorten in 5.7 months. Conclusion: Straight wire appliance is accurate in arrangement of the teeth, especially in the positioning of the teeth, the effect is same with edgewise appliance in a relatively short period, correcting efficiency is higher than the edgewise corrective appliance.
[Key words] Fixed corrective appliance; Efficiency; Evaluation; PAR index
随着正畸理论与技术的不断改进与发展，成年人对正畸的要求明显增加，成年人正畸患者的比率也逐年增加。直丝弓矫治器作为一种高效率的矫治装置，在先进国家90%以上的病例是通过直丝弓矫治技术完成。而我国普及率较低。滑动直丝弓(MBT)矫治器作为第三代直丝弓矫治器，1997年由Edgewise、Bennett和Treviri发展出来 ......
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