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已有研究证明,某些根封剂中含有甲醛(formalde-hyde,FA),并且在操作完成后还有FA释出。作为一种刺激物,即使少量的FA也可阻碍或延迟根周组织的再生。
It has been shown that some root sealants contain formalde-hyde (FA) and FA is released after the operation is completed. As a stimulus, even a small amount of FA can hinder or delay the regeneration of root tissue.