compound fixed bridge

例句：

1. 1. Thepatient needed a new crown for his damagedtooth.
   患者需要为他的损坏牙齿更换一个新牙冠。
2. 2. The dentist recommended acomposite fixed bridge to replace the missing tooth.
   牙医推荐了一个复合固定桥来替换缺失的牙齿。
3. 3. The procedure involved usinga composite material to build the bridge andthen cementing it in place.
   该过程涉及使用复合材料构建桥梁，然后将其固定到位。