6牙冠短小,<img src='https://img2.soutiyun.com/shangxueba/ask/18288001-18291000/18289550/2015112311415951801.jpg' />力大,<img src='https://img2.soutiyun.com/shangxueba/ask/18288001-18291000/18289550/2015112311415951801.jpg' />面无法制备出足够的空间。制作PFM全冠时金-瓷衔接线的位置应为()。

A. ['['在舌侧距龈缘2mm处 B.<img src='https://img2.soutiyun.com/shangxueba/ask/18288001-18291000/18289550/2015112311415951801.jpg' />面距颊侧<img src='https://img2.soutiyun.com/shangxueba/ask/18288001-18291000/18289550/2015112311415951801.jpg' />边缘嵴1mm处 C. 舌侧距<img src='https://img2.soutiyun.com/shangxueba/ask/18288001-18291000/18289550/2015112311415951801.jpg' />边缘嵴2mm处 D. 中央沟处 E. 颊侧距颈缘2mm处

时间:2023-02-20 14:14:52

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