(来学网)测量附着水平,恰当距离是
  • A.
    (来学网)龈缘袋底
  • B.
    (来学网)牙颈部~袋底
  • C.
    (来学网)龈缘~釉牙骨质界
  • D.
    (来学网)釉牙骨质界~袋底
  • E.
    (来学网)牙颈部~釉牙骨质界