论文部分内容阅读
目的:比较改良式Forsus矫治器与肌激动器治疗安氏Ⅱ类下颌后缩病例的临床疗效。方法:应用改良式Forsus矫治器(F组)与肌激动器(A组)联合固定矫治器分别对20例安氏Ⅱ类下颌后缩病例进行功能性矫治,治疗前后摄头颅定位侧位片,进行Pancherz头影测量分析。SPSS 12.0统计学软件进行配对t检验。结果:F组治疗时间(20.5±2.1)个月,A组治疗时间(26.6±2.7)个月,差异具有显著性。两组病例治疗后患者下颌后缩面型显著改善。前牙覆盖减小,磨牙关系纠正为Ⅰ类关系。SNB增大,ANB减小,以上测量项目治疗前后比较,均具有显著的统计学差异,但组间差异并不显著。治疗后,平面的变化A组较明显。结论:改良式Forsus矫治器与肌激动器均可以有效促进下颌骨的生长发育,协调上下颌骨的位置关系,显著改善Ⅱ类咬合关系和下颌后缩面型。两者的矫治效率和矫治疗效均无明显差异。肌激动器组的双期矫治在治疗时间上明显长于改良式Forsus组。
Objective: To compare the clinical effects of modified Forsus appliances and muscle exciters in the treatment of Class Ⅱ mandibular retrusion cases. Methods: Twenty patients with Class Ⅱ mandibular retrusion were treated with modified Forsus appliance (group F) and muscle excitement appliance (group A) with fixed appliances. The cranial positioning flaps, Pancherz Cephalometric analysis. SPSS 12.0 statistical software paired t test. Results: The treatment time in group F was (20.5 ± 2.1) months and in group A was (26.6 ± 2.7) months, the difference was significant. After treatment, the patient’s mandibular recoil was significantly improved in both groups. Decreased anterior teeth coverage, molars relationship corrected for Class Ⅰ relationship. SNB increased, ANB decreased, the above measurement items before and after treatment compared with significant statistical differences, but the difference was not significant between groups. After treatment, level changes in group A more obvious. CONCLUSION: Both modified Forsus appliance and muscle excitement device can effectively promote the growth and development of the mandible, coordinate the position of the upper and lower jaws, and significantly improve the type Ⅱ occlusal relationship and the mandibular retrusion. There was no significant difference between the two in terms of orthodontic efficiency and curative effect. The duration of treatment was significantly longer in the muscle actuator group than in the modified Forsus group.