DEVELOPMENT AND CLINICAL APPLICATION OF A REHABILITATION DEVICE AFTER ARTHROSCOPIC SURGERY OF THE TMJ

本研究的目的是开发一种简单的张口训练装置，以预防关节镜手术后的肌肉痉挛。我们对一种新开发的聚乙烯液压泵进行了抗压强度试验，该泵是一种用于张口训练装置的内置泵，直到漏水。压缩试验使用Autograph G10KN1(岛津)，压缩速度分别为5、10和20 mm/min，压缩强度分别为150.0、397.0和388.1 N。考虑到人体的咬合力，这种聚乙烯液压泵似乎有足够的强度。接下来，为了确定张嘴训练器的形状，制作了试验装置。试验产品I是通过在车床上切割铝筒并进行改进而获得的。制作了金属模具，得到了试制品II类。在临床应用方面，在2名患者的关节镜手术后，使用带有聚乙烯液压泵的试验产品II进行张口训练。对该装置与传统气送式橡胶张口训练器的使用感受进行了调查和比较。对于新设备来说，结果更好。

The purpose or this study was to develop a simple mouth-opening training device to prevent muscle contracture after arthroscopic surgery of the TMJ. We performed a compression strength test of a newly developed polyethylene hydraulic pump, which is a built-in pump for the mouth-opening training device, until water leakage. The compression test was performed using an Autograph G10KN1 (Shimadzu) at a compression rate of 5, 10, and 20 mm/min, and the compression strengths were 150.0, 397.0, and 388.1 N, respectively. Considering occlusion force in humans, this polyethylene hydraulic pump appeared to have adequate strength. Next, to determine the shape of the mouth-opening training device, trial devices were produced.Trial product type I was obtained by cutting aluminum cylinders using a lathe and modified. A metal mold was produced, and trial product type II was obtained. For clinical application, trial product type II with a polyethylene hydraulic pump was used for mouth-opening training after arthroscopic surgery of the TMJ in 2 patients. The feeling during use was investigated and compared between the new device and conventional air-delivery type rubber mouth-opening training device. The results were better for the new device.