Namaki S, Maekawa N, Iwata J, Sawada K, Namaki M, Bjornland T, Yonehara Y
Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan.
Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan.
Int J Oral Maxillofac Surg. 2014 Jul;43(7):856-61. doi: 10.1016/j.ijom.2014.03.001. Epub 2014 Mar 26.
The aim of this study was to determine whether mandibular setback by sagittal split ramus osteotomy (SSRO) influences swallowing function. The subjects were 14 patients with skeletal class III malocclusions who underwent setback surgery by SSRO. Morphological changes were studied on cephalograms, and swallowing function was evaluated by videofluorography before the operation (T0) and at 7-10 days (T1), 3 months (T2), and 6 months (T3) after surgery. The angle between nasion, sella, and hyoid bone (HSN) and the sella-hyoid distance had increased significantly at T1. The hyoid bone returned to the preoperative position at T2. There were no significant changes in the oropharyngeal space at any time. On videofluorographic assessment, lingual movement, soft palate movement, and epiglottic movement had decreased at T1, but all patients recovered at T2. The oral transit time was significantly longer at T1 than at T0. Our results confirm that SSRO influences swallowing function. Swallowing function appears to stabilize by 3 months after surgery.
本研究的目的是确定经矢状劈开下颌支截骨术（SSRO）进行下颌后缩是否会影响吞咽功能。研究对象为14例接受SSRO后退手术的骨性III类错牙合患者。通过头颅侧位片研究形态学变化，并在术前（T0）以及术后7 - 10天（T1）、3个月（T2）和6个月（T3）通过电视荧光吞咽造影评估吞咽功能。在T1时，鼻根点、蝶鞍点和舌骨之间的角度（HSN）以及蝶鞍 - 舌骨距离显著增加。舌骨在T2时恢复到术前位置。口咽间隙在任何时候均无显著变化。在电视荧光吞咽造影评估中，T1时舌运动、软腭运动和会厌运动减少，但所有患者在T2时均恢复。口腔运送时间在T1时显著长于T0。我们的结果证实SSRO会影响吞咽功能。吞咽功能似乎在术后3个月趋于稳定。
