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%利多卡因浸润或阻滞麻醉,用锐利挖器平管口切
牙
,拭干后用氢氧化钙糊剂
盖
面,硬
后,
薄层氧化
粉,用磷酸
粉封洞。