Cura N, Sarac M, Oztürk Y, Sürmeli N
University of Istanbul, Faculty of Dentistry, Department of Orthodontics, Turkey.
Am J Orthod Dentofacial Orthop. 1996 Jul;110(1):36-45. doi: 10.1016/s0889-5406(96)70085-9.
The orthodontic and orthopedic effects of the Activator, Activator-Headgear Combination (ACHG) and the Bass appliance systems were compared by analyzing the cephalometric records of 64 subjects, who were treated for skeletal Class II malocclusion, with both conventional and Pancherz's methods. Differences between observations on the different occasions (starting and ending values) were tested with Wilcoxon's matched pairs rank test. Kruskal-Wallis nonparametric analysis of variance was carried out in different situations among all three groups. If a level of significance less than 0.05 was observed, Scheffè's method of multiple comparisons was used to determine differences among groups. The results of this study showed that greater improvement in sagittal skeletal relationship (ANB angle) was obtained in both Bass and ACHG groups than in the Activator group. The differences between the groups were most pronounced for dental variables. The Bass appliance was found to be more effective in the control of the unwanted side effects (proclination of lower incisors, retroclination of upper incisors). Unfavorable labial tipping of the lower incisors was also prevented with the ACHG appliance.
通过分析64例接受骨骼Ⅱ类错颌畸形治疗的受试者的头影测量记录，采用传统方法和潘彻兹方法，比较了肌激动器、肌激动器 - 头帽联合矫治器（ACHG）和巴斯矫治器系统的正畸和矫形效果。不同时间点（起始值和终末值）观察结果的差异采用威尔科克森配对秩和检验进行检验。对三组在不同情况下进行了克鲁斯卡尔 - 沃利斯非参数方差分析。如果观察到显著性水平小于0.05，则采用谢费多重比较法确定组间差异。本研究结果表明，巴斯组和ACHG组在矢状骨骼关系（ANB角）方面的改善均大于肌激动器组。组间差异在牙齿变量方面最为明显。发现巴斯矫治器在控制不良副作用（下切牙前倾、上切牙后倾）方面更有效。ACHG矫治器也可防止下切牙不利的唇倾。
