(来学网)根管充填时主尖应达距X线片所示根尖
  • A.
    (来学网)0.1～0.15mm
  • B.
    (来学网)0.2～0.25mm
  • C.
    (来学网)0.3～0.4mm
  • D.
    (来学网)0.5～2mm
  • E.
    (来学网)2.5～3mm
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