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一、操作步骤: 1.拍X片,了解受伤牙根部情况,选好适应症。2.局部常规消毒和麻醉。3.根面预备:①用砂轮将牙根磨成唇、舌向两个斜面。②用拔髓针及根管扩大针拔掉牙髓。③参照X片、根据根管长短、大小及形态,用不同型号已消毒好的圆形钻顺牙根轴向,扩大根管至牙根长度的2/3或3/4,其粗细视牙根粗细而定。④用无菌生理盐水或3%的双氧水冲洗根管。⑤取适当粗细的不锈钢丝在酒精灯上烤热后迅速准确插入根管或用卷棉针蘸CP液(含酚12克,樟脑24克,95%酒
First, the steps: 1. Shooting X-piece, to understand the situation of the injured root, choose indications. 2. Local routine disinfection and anesthesia. 3. Root preparation: ① ground with a grinding wheel root lip, tongue to the two bevels. ② with the needles and root canal enlargement needle unplug the pulp. ③ reference to X-ray, according to the root canal length, size and shape, with different models have been disinfected round drill along the axial root, root canal to expand the length of 2/3 or 3/4, depending on the thickness of root thickness set. ④ with sterile saline or 3% hydrogen peroxide irrigation root canal. ⑤ take the appropriate thickness of stainless steel wire hot roasted on the alcohol lamp quickly and accurately inserted into the root canal or with a cotton swab dipped in CP solution (phenol 12 grams, 24 grams of camphor, 95% wine