共用题干女,35岁。已拔除3个月,要求作固定义齿修复,经查对颌无明显伸长,相邻牙牙周健康,拔牙创已完全愈合。固定桥基牙应选择A、B、C、D、E、
共用题干
女,35岁。
已拔除3个月,要求作固定义齿修复,经查对颌无明显伸长,相邻牙牙周健康,拔牙创已完全愈合。
女,35岁。
![](https://assets.51tk.com/images/f845e6212bec44ae_img/b13c63694bb656e9.jpg)
固定桥基牙应选择
A、![](https://assets.51tk.com/images/f845e6212bec44ae_img/97faa641e41b7929.jpg)
B、![](https://assets.51tk.com/images/f845e6212bec44ae_img/5454f87182988f41.jpg)
C、![](https://assets.51tk.com/images/f845e6212bec44ae_img/3d4aca6b0f961da4.jpg)
D、![](https://assets.51tk.com/images/f845e6212bec44ae_img/7fdcdc7957b89e8b.jpg)
E、![](https://assets.51tk.com/images/f845e6212bec44ae_img/53dbecb3512c8285.jpg)
A、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/97faa641e41b7929.jpg)
B、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/5454f87182988f41.jpg)
C、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/3d4aca6b0f961da4.jpg)
D、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/7fdcdc7957b89e8b.jpg)
E、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/53dbecb3512c8285.jpg)
参考解析
解析:题16:A、B、C选项的固定桥设计因容易暴露金属,影响美观,不符合患者的要求。而且开面冠固定桥由于美观性和固位体边缘密合性差,临床上已经被淘汰。塑料冠固定桥强度差,一般只作为暂时性修复体使用。正确答案应选D。题17:后牙缺失的固定桥修复时,一般应尽量设计双端固位,尽量避免设计单端桥或有单端桥体的复合固定桥。否则不利于单端桥体一侧的基牙的健康。本病例固定桥基牙应选
,基牙健康,且其牙周膜面积之和大于缺失牙牙周膜面积之和。因此,正确答案是C。
![](https://assets.51tk.com/images/f845e6212bec44ae_img/4d701cddbc8754c6.jpg)