Jamilian A, Showkatbakhsh Rahman
Islamic Azad University, Tehran.
Int J Orthod Milwaukee. 2009 Fall;20(3):11-4.
Various treatment approaches are applied for correction of CL III malocclusion due to maxillary deficiency. However, the benefits of a simple intraoral appliance that can move the maxilla in forward position have not been reported. 25 Cl III patients with SNA < 78 degrees, SNB < or = 80 degrees and ANB < or = 0 were selected for this study. All the patients received a tongue appliance, which originally was a habit breaker. Pre- and post-treatment cephalometric images were obtained and paired t-test revealed significant increase in SNA and significant decrease in IMPA. The tongue appliance can move the Maxilla in forward position. Therefore, this simple appliance can be an alternative method for protraction of Maxilla.
针对上颌骨发育不足导致的Ⅲ类错牙合畸形，应用了多种治疗方法。然而，一种能将上颌骨向前移动的简单口腔内矫治器的益处尚未见报道。本研究选取了25例SNA＜78度、SNB≤80度且ANB≤0的Ⅲ类错牙合患者。所有患者均佩戴舌矫治器，该矫治器最初是一种破除不良习惯的装置。治疗前后均获取了头影测量图像，配对t检验显示SNA显著增加，IMPA显著降低。舌矫治器可将上颌骨向前移动。因此，这种简单的矫治器可作为上颌骨前牵引的一种替代方法。
