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材料与方法:临床资料:50例患者共84颗患牙,其中男性41人,女性9人,年龄在15～50岁,上颌中切牙62颗,上颌侧切牙22颗,发病原因均为外伤所致。 治疗方法:常规消毒,局麻下用0.25不锈钢丝结扎固定,而后进行开髓、拔髓、根管预备,用3％H_2O_2及生理盐水交替冲洗根管,干燥根管,作根管充填,充填后选择与根管大小相配的螺纹桩钻钉,沿根管方向打孔,旋入相应型号的根管螺纹桩(桩上约为根长2/3)。用丁香油粘固粉暂时修复牙冠。给予抗炎治疗。30天后去除结扎固定及暂时牙冠,摄X片,确定根尖周无病变,按光固化复合树脂的操作要领,修复牙冠。 结果:术后经2月～3年的随访,除2例右上颌
MATERIALS AND METHODS: Clinical data: There were 84 teeth in 50 patients, including 41 males and 9 females, aged 15 to 50 years old, 62 maxillary central incisors and 22 maxillary lateral incisors. All the causes were traumatic Due. Treatment: routine disinfection, local anesthesia with 0.25 stainless steel wire ligation, and then open the pulp, pulp, root canal preparation, with 3% H_2O_2 and saline alternating irrigation root canal, root canal drying, for root canal filling, filling After the selection of root canal size matching screw pile drilling, drilling along the direction of root canal, screw into the corresponding type of root canal screw pile (pile about root length 2/3). Fix the crown with clove oil cement. Give anti-inflammatory treatment. After 30 days to remove the ligation of fixed and temporary crown, X-ray film to determine apical week no lesions, according to the light curing compound resin operating essentials, restoration of the crown. Results: After 2 months to 3 years of follow-up, except 2 cases of right maxillary