Objective To compare the clinical curative effect of calcium hydroxide or FC in root canal disinfection.
目的比较氢氧化钙和甲酚甲醛（FC）用于根管消毒的临床疗效。
The function of root canal disinfection is to control or kill the remaining bacteria in the root canal, relieve pain, control exudation and induce apical part of a root to complete development.
根管消毒的目的是：进一步控制或消灭根管预备后残留在根管内的细菌、止痛、控制渗出、诱导根尖发育完成等。
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