Q
The enamel has no capacity of self repair because______________?
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A
A. It has only a small percent of organic content
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B
B. Its formative cells are lost once it is completely formed
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C
C. It is essentially a keratin tissue and has no blood vessels
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D
D. It has no direct connection with the active cells of the dental pulp
Correct Answer:
B. B. Its formative cells are lost once it is completely formed
