root canal of tooth的意思|示意

Methods Hemisections were performed on reserved canals of incomplete tooth fracture, complete root fracture and furcation involvement after root canal therapy.

方法选择隐裂、根折或根分叉病变患者，对欲保留牙根进行根管治疗后，行半牙切除术。

CONCLUSION: the tooth type or tooth position, root curvature and calcification have significantly influenced the outcome of root canal treatment.

结论：根管治疗的失败与牙位(牙类型和牙位置)、根管弯曲度和钙化度密切相关。

I have a root canal filling in one of my teeth. The tooth is changing color. Can anything be done about it?

我有一颗牙在牙根管里补过。现在这颗牙变了颜色，有什么办法可以解决？