Conclusion CPC is a kind of good materials in the treatment of root canal filling.
结论：自固化磷酸钙是一种良好的根管充填材料。
It felt weird, like pining for root-canal treatment, and it happened right here in the city of Michelangelo.
这感觉是怪异的，就像居然有人渴望牙根管治疗一样，而且就发生在这儿，米开朗琪罗的城市。
PURPOSE: to investigate the effect of root canal anatomy in maxillary first premolars on root canal treatment difficulty.
目的：探讨上颌第一前磨牙的根管解剖形态对根管治疗术难度的影响。
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