26.齒頸線(cervical line)是指下列何者?
(A)牙本質牙釉質交界(dentinoenamel junction, DEJ)
(B)牙骨質牙釉質交界(cementoenamel junction, CEJ)
(C)牙齦線(gingival line)
(D)牙周韌帶(periodontal ligament)
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統計:
A(28), B(492), C(8), D(0), E(0) #1727634
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(A) 牙本質牙釉質交界(dentino...