固定桥是一种常见的牙列缺损修复体。因其咀嚼效率高,无异物感,更无摘戴之烦,故深受患者欢迎。但如设计与制作不当,也会给患者带来痛苦和不应有的损失,故就修复设计问题作一复习,以期减少不当设计,从而延长固定桥使用年限,增进患者口腔与全身健康。一个牙缺失,两侧均有余牙者,一般较少出现设计错误,但亦有对基牙考虑不周,因位体选择不当者。数个牙缺失,游离端牙齿缺失,则较易出现不当设计,曾有人统计150例不良固定修复体,就其失败原因看,与设计有关的(包括基牙选择与处理不 Fixed bridge is a common dentition defect repair. Because of its high chewing efficiency, no foreign body sensation, no more troublesome picks, it welcomed by patients. However, if the design and fabrication are not done properly, it will also bring painful and undue losses to patients. Therefore, a review on the issue of restoration and design should be made with a view to reducing improper design so as to prolong the service life of the bridge and enhance oral and systemic health. One tooth is missing and there are more than one tooth on both sides. Generally, there are fewer design errors, but there are also some problems with the abutments. Several teeth missing, the missing free tooth, the more prone to improper design, there were statistics 150 cases of poor fixed prosthesis, the reasons for the failure to see, and design-related (including selection and treatment of abutment