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目的探讨导板、腭杆与直丝弓技术联合应用治疗安氏Ⅱ类错畸形的效果。方法选择45例下颌后缩为主的恒牙安氏Ⅱ类错患者,随机分成2组,23例采用直丝弓矫治系统配合导板、腭杆联合治疗(治疗组),22例采用单纯直丝弓系统用“摇椅弓”打开咬,分别观察2组打开咬的时间及治疗完成的时间,矫治器脱落情况。结果治疗组无论在打开咬的时间上还是治疗完成的时间上都明显缩短,咬障碍所致矫治器脱落率明显降低。结论直丝弓矫治技术与导板、腭杆的早期联合应用,可提高错畸形的矫治效果,缩短矫治时间。
Objective To investigate the effect of guide plate, palatal rod and straight wire arch technique in the treatment of Class Ⅱ malocclusion. Methods Forty-five patients with mandibular retrusion who suffered from Class Ⅱ malocclusion were randomly divided into two groups. Twenty-three patients were treated with straight wire appliance combined with guide plate and palatal bar (treatment group). Twenty-two patients Silk arch system with “rocking chair bow ” to open the bite, respectively, to observe the time to open the two groups bite and the completion of treatment, appliance shedding situation. Results The treatment group significantly shortened both the time to open the bite and the time when the treatment was completed, and the reduction rate of the appliance caused by the bite disorder was significantly decreased. Conclusion The combined application of straight wire appliance and guide plate and palatal rod can improve the effect of malocclusion and shorten the treatment time.