Ling Yue-hua, Shi Hui-min, Zhao Jun
Department of Prothodontics, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Shanghai Kou Qiang Yi Xue. 2011 Oct;20(5):522-6.
To observe the disc-condyle relationship, joint effusion, and osseous abnormalities of the condyle before and after prosthetic rehabilitation in 8 edentulous patients with asymptomatic of bilateral temporomandibular joints (TMJs).
Complete dentures of 8 edentulous patients were made. Bilateral TMJ MRI before and after prosthetic rehabilitation was performed to observe TMJ internal changes.
Before prosthetic rehabilitation, 10 joint disc displacements were found in 62.5% of 16 TMJs of 8 edentulous patients, including 7 medial disc displacement, 2 lateral disc displacement and anterior disc displacement (6.25%); 7 TMJs had effusion 4 had condylar abnormalities. After prosthetic rehabilitation, 10 disc displacements were found in 16 TMJs of 8 edentulous patients, including 7 medial disc displacement, 2 lateral disc displacement, and 1 anterior disc displacement; 7 TMJs effusion. 4 TMJs had condylar abnormalities.
Long-time tooth loss may lead to internal derangement of TMJ in edentulous patients. In short term after prosthetic rehabilitation with complete denture, there is no distinct change in disc-condylar relationship, joint effusion, and condylar abnormalities in edentulous patients.
观察8例双侧颞下颌关节（TMJ）无症状的无牙颌患者在修复前和修复后髁突与关节盘的关系、关节积液及髁突骨质异常情况。
为8例无牙颌患者制作全口义齿。在修复前和修复后对双侧TMJ进行MRI检查，以观察TMJ内部变化。
修复前，8例无牙颌患者的16个TMJ中有62.5%（10个）出现关节盘移位，其中包括7个关节盘内侧移位、2个外侧移位和1个前移位（6.25%）；7个TMJ有关节积液，4个有髁突骨质异常。修复后，8例无牙颌患者的16个TMJ中有10个出现关节盘移位，包括7个内侧移位、2个外侧移位和1个前移位；7个TMJ有关节积液，4个有髁突骨质异常。
长期缺牙可能导致无牙颌患者TMJ结构紊乱。全口义齿修复后短期内，无牙颌患者的关节盘与髁突关系、关节积液及髁突骨质异常无明显变化。
