31.牙本質發育不良(dentinogenesis imperfecta)為一遺傳性缺陷,其原因來自那一時期的牙齒發育異常?
(A)初生期(initiation)
(B)增殖期(proliferation)
(C)組織分化期(histodifferentiation)
(D)形態分化期(morphodifferentiation)
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統計: A(10), B(33), C(613), D(145), E(0) #1845441
統計: A(10), B(33), C(613), D(145), E(0) #1845441