Oztürk Y, Tankuter N
Department of Orthodontics, University of Istanbul, Turkey.
Eur J Orthod. 1994 Apr;16(2):149-57. doi: 10.1093/ejo/16.2.149.
The purpose of this study was to evaluate skeletal and dental effects of activator and activator high-pull headgear combination appliances on growing patients with Class II, division 1 malocclusion. The material consisted of pre- and post-treatment cephalograms of 17 boys and 20 girls. Seventeen patients (eight male and nine female) were treated with an activator, the remaining 20 (9 male and 11 female) were treated with an activator high-pull headgear combination (AHGC) appliance. Changes due to treatment were compared with a group of 19 (nine male and ten female) untreated children. ANB angle was significantly reduced and mandibular growth development was favourable in both treatment groups. The AHGC appliance was more effective in the reduction of the maxillary prognathism. An increase of the anterior facial height and clockwise rotation of the occlusal plane was observed in the patients treated with activator appliance. The cant of the mandibular plane remained stable during both treatment periods. On the other hand, the forward displacement of the upper first molars was reduced significantly and the axial inclination of the lower incisors was controlled much better with the AHGC appliance.
本研究的目的是评估功能矫治器和功能矫治器-高位牵引头帽联合矫治器对生长发育期安氏II类1分类错牙合患者的骨骼和牙齿的影响。研究材料包括17名男孩和20名女孩治疗前和治疗后的头影测量片。17例患者（8例男性和9例女性）采用功能矫治器治疗，其余20例（9例男性和11例女性）采用功能矫治器-高位牵引头帽联合（AHGC）矫治器治疗。将治疗引起的变化与一组19例（9例男性和10例女性）未治疗的儿童进行比较。两个治疗组的ANB角均显著减小，下颌生长发育良好。AHGC矫治器在减少上颌前突方面更有效。在使用功能矫治器治疗的患者中，观察到前牙面高度增加和牙合平面顺时针旋转。在两个治疗阶段，下颌平面的倾斜度保持稳定。另一方面，AHGC矫治器能显著减少上颌第一磨牙的前移，更好地控制下切牙的轴倾度。
