共用题干女,45岁。缺失,前牙区Ⅲ度深覆牙合,余留牙无异常。可摘局部义齿卡环应放置在A、B、C、D、E、
共用题干
女,45岁。
缺失,前牙区Ⅲ度深覆牙合,余留牙无异常。
女,45岁。
![](https://assets.51tk.com/images/f845e6212bec44ae_img/97537f65f1331a4b.jpg)
可摘局部义齿卡环应放置在
A、![](https://assets.51tk.com/images/f845e6212bec44ae_img/b4bb5d94eb9cd4d7.jpg)
B、![](https://assets.51tk.com/images/f845e6212bec44ae_img/df1c8d4cecd5b4ae.jpg)
C、![](https://assets.51tk.com/images/f845e6212bec44ae_img/cd25d67f3263398b.jpg)
D、![](https://assets.51tk.com/images/f845e6212bec44ae_img/3afb5e2db2aa151e.jpg)
E、![](https://assets.51tk.com/images/f845e6212bec44ae_img/baeba9440e7704ed.jpg)
A、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/b4bb5d94eb9cd4d7.jpg)
B、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/df1c8d4cecd5b4ae.jpg)
C、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/cd25d67f3263398b.jpg)
D、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/3afb5e2db2aa151e.jpg)
E、
![](https://assets.51tk.com/images/f845e6212bec44ae_img/baeba9440e7704ed.jpg)
参考解析
解析:题33:该患者缺牙间隙在牙弓的前端,常设计为天然牙和黏膜共同支持的义齿。为了避免影响美观,尽量避免暴露金属,同时要避免邻近缺隙的基牙受到较大的扭力,卡环应放置在两侧
或以后的牙齿上(如
间隙卡环,卡环臂尖位于近中倒凹区;或
联合卡环),尽量不要在
上放置卡环。同时要在
的牙合面或舌面近中放置支托,以增强支持作用。正确答案应选E。题34:前牙Ⅲ度深覆牙合,上前牙腭侧修复间隙小,而前牙牙合力相对较大。人工牙腭侧基托必须有足够的强度,而且要尽量薄。所以义齿应采用铸造金属支架和金属基托。塑料基托、塑料基托加金属网或锤造金属基托均不适合。正确答案是A。题35:由于人工牙处咬合力大,修复间隙小,为了避免人工牙折断,应采用有金属舌面的人工前牙。正确答案是D。
![](https://assets.51tk.com/images/f845e6212bec44ae_img/6a9811dc950b9844.jpg)
![](https://assets.51tk.com/images/f845e6212bec44ae_img/b9cc28ee1a25c12d.jpg)
![](https://assets.51tk.com/images/f845e6212bec44ae_img/0868730a17e5a621.jpg)
![](https://assets.51tk.com/images/f845e6212bec44ae_img/c88f562a43d85edf.jpg)
![](https://assets.51tk.com/images/f845e6212bec44ae_img/f6826a9e52a5b2a8.jpg)