通过对１４例戴旧总义齿的无牙颌患者行新总义齿修复垂直距离升高前后颞颌关节间隙及髁状突相对于蝶窦中心的位置变化研究，发现咬合垂直距离的改变能引起髁状突位置的改变，垂直距离升高后，髁状突呈前移位，在总义齿修复中，防止及减缓垂直距离的降低，对维持ＴＭＪ的正常位置，预防无牙颌ＴＭＪＤＳ的发生有重要意义． Through the study of 14 cases of edentulous jaw patients with denture underwent new total denture to repair the change of temporomandibular joint space and the position of condyle relative to sphenoid sinus center before and after the vertical distance increase, it was found that the change of occlusal vertical distance could cause condyle Condylar position changes, the vertical distance increases, the condylar protrusion was displaced in the total denture repair, to prevent and slow down the vertical distance, to maintain the normal position of TMJ, prevention of edentulous TMJDS is important significance.