1101. The enamel has no capacity of self repair because______________?

A. It has only a small percent of organic content
B. Its formative cells are lost once it is completely formed
C. It is essentially a keratin tissue and has no blood vessels
D. It has no direct connection with the active cells of the dental pulp
βœ… The correct answer is option B. Its formative cells are lost once it is completely formed.