1.下圖X光片中所示之大牙髓腔,即所謂之殼狀牙齒(shell teeth),它是屬於下列何病變所致? 
(A)牙釉質發育不全(amelogenesis imperfecta)
(B)牙本質發育不全(dentinogenesis imperfecta)
(C)牙本質發育不良(dentin dysplasia)
(D)局部牙齒發育不良(regional odontodysplasia)
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統計: A(45), B(1409), C(205), D(94), E(0) #1633867
統計: A(45), B(1409), C(205), D(94), E(0) #1633867