All-ceramic crowns have a more life-like appearance than porcelain-bonded-to-metal crowns because they:
A) have an opaque layer
B) do not have an opaque layer to hide metal
C) are cemented with different cements than porcelain-bonded-to-metal crowns
D) utilize high-fusing rather than low-fusing porcelain
Correct Answer:
Verified
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