The microhardness of dentin is about____________?
(A) 1/2 that of enamel
(B) 1/7 that of enamel
(C) 1/4 that of enamel
(D) 1/5 that of enamel
The microhardness of dentin is about____________?
(A) 1/2 that of enamel
(B) 1/7 that of enamel
(C) 1/4 that of enamel
(D) 1/5 that of enamel
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