The Prevention of the TMD by fixing mouth protectors

以10例无颞下颌关节功能障碍的受试者为受试者，采用多层螺旋CT和MRI检查3例产科下颌关节脱位患者的最大咬合力和关节间隙内髁突的移位，并在配戴的护口器中进行正中咬合和抬高。在多层螺旋CT和MRI上，它是不固定的，在关节间隙的行为表现为多样化。采用1998财年新研制的H型结构口罩和现成护口器，对6名考生进行咬合位移和下颌骨最大咬合力的比较和检测。咬合动作的记录采用MM-J1-E，它连接了紧握考生3次和最大咬合力10秒。在现成的小鼠保护器中，结果表明，与咬合有关的闭合动作有多样化的趋势，但没有得到稳定在最大咬合力的下颌位置。此外，在现成的口罩中，软质材料的情况和这一趋势也是显著的。为此，得到了稳定在最大咬合力下的下颌位置，并确定了H型定制式护口器的闭合路线。由此可见，自制的H型护口器稳定了下颌骨和髁突的位置，取得了较好的效果。

In making 10 persons without the dysfunction in the temporomandibular joint to be an examinee, it examined in muximum bite force and displacement of the condyle in the articular space by these 3 obstetrical chin presentation by multitomography and MRI with centric occlusion and raise-up place in the fitting mouth protectors. In multitomography and view of the MRI, it was not fixed, and the behavior in the articular space of the condyle showed the diversification. Using custom made mouth protector of the H-type structure newly developed with the ready made mouth protector in the 1998 fiscal year in making 6 persons to be an examinee, the displacement in clenching and maximum bite force of the lower jaw was compared and was examined. The record in the bite of the jaw movement used MM-J1-E, and it connected clenching the examinee of 3 times and maximum bite force for 10 seconds. In the ready made mouse protector, the result showed that closing movement connected clenching tended to diversify without getting the mandibular position which stabilized in maximum bite force. In addition, thing with the soft material and this tendency were remarkable in the ready made mouth protector. For this, the mandibular position which was stabilized in maximum bite force is got, and again, the close route has also been settled H-type custom made mouth protector. From this above fact, the position of lower jaw and condyle was stabilized by H-type custom made mouth protector, and it proved usefulness.