;
;
Methods dip 2% lidocaine or impede narcosis, use the acuity exonerative plane root slot cut endodontium,after drying overlay thin hydrochloride zinc and than using the zinc phosphate to mount.
方法用2%利多卡因浸润
阻滞
,用锐利挖器平根管口切断牙髓,拭干后用氢氧
钙糊剂覆盖根髓断面,硬固后,覆薄层氧
固粉,用磷酸固粉封洞。
