68.下列何者可診斷為牙本質形成不良(dentinogenesis imperfecta)?
(A)
(B)
(C)
(D)
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統計: A(59), B(835), C(103), D(88), E(0) #2042265
統計: A(59), B(835), C(103), D(88), E(0) #2042265