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目的 :评价并比较Damon Q自锁托槽与传统直丝弓托槽矫治骨性Ⅱ类错患者的临床效果。方法 :选择40例成人骨性Ⅱ类错患者,分成A、B两组,A组使用Damon Q自锁托槽矫治系统,B组使用MBT直丝弓托槽矫治系统。分析与评价:(1)疼痛分析:采用视觉模拟疼痛量表(visual analogue scale,VAS)标尺,在初戴矫治器后2 h、6 h、24 h、3 d及7 d进行疼痛调查。(2)矫治时间及效率分析:分别记录矫治时间、有效复诊次数及椅旁操作时间。(3)矫治效果分析:分别在矫治前后摄X线头颅侧位定位片测量分析。使用SPSS 13.0软件对数据进行统计学分析。结果:(1)AB两组在初戴矫治器后的疼痛程度和疼痛变化趋势上差异无统计学意义。(2)A组矫治时间和有效复诊次数均少于B组,但两组间差异无统计学意义。A组比B组椅旁操作时间平均少182 s。(3)矫治后两组均发生明显变化,上、下前牙内收,凸面型改善。结论:对于成人骨性Ⅱ类错患者,初戴固定矫治器后患者的疼痛感与固定矫治器的类型无明显相关性;使用Damon Q自锁托槽矫治系统与使用MBT直丝弓托槽矫治系统相比,可显著缩短椅旁操作时间,但在缩短疗程和减少有效复诊次数上无明显优势;两者均能有效控制前牙转矩,内收上下前牙,改善患者凸面型。
OBJECTIVE: To evaluate and compare the clinical effects of Damon Q self-ligating brackets and conventional braces for the treatment of patients with skeletal Class II malocclusion. Methods: Forty adult patients with skeletal Class Ⅱ malocclusion were selected and divided into groups A and B. Group A was treated with Damon Q self-ligating brackets. Group B was instrumented with MBT brackets. Analysis and Evaluation: (1) Pain Analysis: The visual analogue pain scale (VAS) scale was used to investigate the pain at 2 h, 6 h, 24 h, 3 d and 7 d after initial wear of the appliance. (2) orthodontic time and efficiency analysis: Record the treatment time, the number of effective referrals and the operation time beside the chair. (3) orthodontic treatment effect analysis: respectively, before and after correction of X-ray cephalometric imaging analysis. Data were statistically analyzed using SPSS 13.0 software. Results: (1) There was no significant difference between the two groups in the change of pain degree and pain tendency after wearing the appliance. (2) A group of correction time and the number of effective referrals were less than the B group, but the difference between the two groups was not statistically significant. The average operating time in group A was 182 seconds less than in group B. (3) After treatment, significant changes occurred in both groups, upper and lower anterior adduction, convex type to improve. Conclusion: For patients with adult skeletal Class Ⅱ malocclusion, the pain of the patients with initial orthodontic fixation had no significant correlation with the type of fixed appliance. Using Damon Q self-ligating brackets orthodontic system and MBT linear brackets Compared with the orthodontic system, the operation time beside the chair can be significantly shortened, but there is no obvious advantage in shortening the course of treatment and reducing the number of effective referrals; both can effectively control the anterior teeth torque, adducing the upper and lower anterior teeth, and improving the convex type of the patient.