(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