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
2%利多卡因浸润或阻滞麻醉,
锐利挖

管口切
牙
,拭干后
氢氧化钙糊剂覆盖


,硬固后,覆薄层氧化锌粘固粉,
磷酸锌粘固粉封洞。



