Dvelopment of hand operated and two degrees of freedom jaw exercise apparatus treatment for patients with desturbance mandibular movement

张口训练适用于患有与下颌运动相关的张口障碍的患者的康复。传统的张口装置通常仅在上下方向上增加张口距离。我们开发了一种提供两个自由度的手动运动器械（Okino制造工业公司）。这种健身器不仅可以上下运动，还可以前后运动。另外，由于是用手操作的，所以简单方便。该装置适用于颞下颌关节纤维性强直、挛缩性牙关紧闭或口腔颌面部创伤的治疗。这种新开发的系统被认为是一种有效的方法，以帮助病人的康复从开口障碍有关的下颌运动。

Mouth-opening training is indicated for the rehablitation of patients suffering from a mouth opening disturbance related to the movement of the jaw. Conventional mouth-opening apparatuses normally only increase the mouth-opening distance in an upand down direction. We developed a hand operated exercise apparatus which provides two degrees of freedom(Okino manufacturing industry Company). This exercise apparatus allows not only up and down movement but also for back and forward movement as well.In addition, it is easy and convenient since it is hand operated. This appratus was indicated for patients with joint trismus such Asin case of fibrous ankylosis of the tempromandibular joint, contracture trismus of the treatment of an injuly to the oral and Maxillofacial area. This newly developed system is considered to be an effective method to aid the rehabilitation of patients Suffering from a mouth opening disturbance related to jaw movement.