Development on the monitoring system for the treatment using distraction osteogenesis

上颌牵引成骨术是改善唇腭裂患者咬合关系和美学的最有效的治疗方法。然而，利用两个固定在头部上的带立柱的螺钉将上颌骨牵引到所需的位置是非常困难的，本研究的目的是开发用于上颌骨牵引成骨治疗的监测系统。利用微型拉力传感器，我们能够真实的实时测量上颌骨所承受的牵引力。此外，我们能够观察上颌骨的运动在真实的时间，通过使用超声成像设备。在此基础上，利用含球形树脂颗粒的口香糖建立了咀嚼功能的定量评价方法，并将这些技术结合起来，构建了上颌牵张成骨治疗的监测系统，证实了该监测系统的实用性。

Treatment of the distraction osteogenesis on the upper jaw is the most effective treatment to improve occlusion and esthetics of the patients with cleft lip and palate. However, it is extremely difficult to move maxillary bone to the desireable position by using two screws equipped with the column fixed on the head.The purpose of this study was to develop the monitoring system for the treatment of distraction osteogenesis on the maxillary bone. We became able to measure the traction power loaded on the maxillary bone in real time by using microminiature tension sensor. Also, we became able to observe the movement of the maxillary bone in real time by using ultrasonic imaging apparatus. Furthermore, the quantitative evaluation of the chewing function was developed using chewing gum including spherical resin particle.A monitoring system for the treatment of distraction osteogenesis on the upper jaw was composed by putting together of these technique, and the utility of this monitoring system was confirmed.