手用不锈钢锉根管预备。

Root canal preparation with hand use stainless steel file.

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目的探讨根管预备后残留细菌对根管治疗预后的影响。

Objective To study the effect of the left bacteria on the root canal therapy.

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目的比较预备与不预备的根管以及预备后充填与不充填的根管抗折力。

Objective To compare the resistance to fracture of the root canals after instrumentation or not.

youdao

目的比较预备与不预备的根管以及预备后充填与不充填的根管抗折力。

Objective To compare the resistance to fracture of the root canals after instrumentation or not.

youdao