50.關於牙髓石(pulp stone)的敘述,下列何者正確?
(A)僅發生於牙髓腔(pulp chamber)
(B)其鈣磷含量比率與牙骨質相近
(C)真牙髓石(true pulp stone)內含牙本質小管(dentinal tubules)
(D)假牙髓石(false pulp stone)有造牙本質細胞(odontoblast)圍繞
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統計: A(84), B(244), C(1010), D(96), E(0) #3198228
統計: A(84), B(244), C(1010), D(96), E(0) #3198228