Kikuta T, Hara I, Seto T, Yoshioka I, Nakashima T, Yasumitsu C
First Department of Oral Surgery, Kyushu Dental College, Kitakyushu, Japan.
Int J Adult Orthodon Orthognath Surg. 1994;9(1):9-17.
The aim of this study was to measure the changes in masticatory function for 1 year after sagittal split ramus osteotomy. Thirty prognathic patients who underwent preoperative and postoperative orthodontic treatment participated in this study. Their masticatory performance, occlusal contact area and points, and biting force were measured before surgery and 3, 6, and 12 months postoperatively. From 3 months after surgery, masticatory efficiency was greater than that found preoperatively, and the increase was significant 6 months after surgery. Occlusal contact area and points tended to increase from 3 months after surgery, and there was a significant increase 12 months after surgery. The bilateral biting force was lower 3 months after surgery than it was preoperatively, but it had increased significantly and was balanced on left and right sides 12 months after surgery.
本研究的目的是测量矢状劈开下颌支截骨术后1年咀嚼功能的变化。30例接受术前和术后正畸治疗的前突患者参与了本研究。在手术前以及术后3个月、6个月和12个月测量了他们的咀嚼性能、咬合接触面积和点数以及咬合力。术后3个月起，咀嚼效率高于术前，术后6个月增加显著。咬合接触面积和点数从术后3个月起有增加趋势，术后12个月显著增加。术后3个月双侧咬合力低于术前，但术后12个月显著增加且左右两侧平衡。
