(来学网)肯氏四类牙列缺损,何种情况下需将模型牙槽嵴唇侧近牙颈区刮去0.2mm石膏
  • A.
    (来学网)该区有骨尖或骨突时
  • B.
    (来学网)唇侧有倒凹时
  • C.
    (来学网)唇侧不做基托时
  • D.
    (来学网)做临时义齿时
  • E.
    (来学网)以上均是