2[2]Tokabinejad W.Principle and Practice of Endodontics.third edition,Philadelphia:W.B Saunders Company,2002,250～251.
3[3]Mileti I,Ani I,Karlovi Z et al.Cytotoxic effect of four root filling materials.Endod Dent Traumatol,2000,16:287～290.
4[4]Geurtsen W,Leinenbach F,Krage T et al.Cytotoxicity of four root canal sealers in permanent 3T3 cells and primary human periodontal ligament fibroblast cultures.Oral Surg Oral Med Oral Patho,1998,85:592～7
5[5]Gerosa R,Menegazzi G,Borin M et al.Cytotoxicity evaluation of six root canal sealers.J Endodon,1995,21:446～8.
6[6]Briseito BM,Willershausen B.Root canal sealer cytotoxicity with human gingival fibroblasts.Ⅲ .Calcium hydroxide-based sealers.J Endodon,1992,18:110～3.
7[7]Osorio RM,Hefti A,Vertucci FJ et al.Cytotoxicity of endodontic materials.J Endodon,1998,24:91～6,
8[8]Telli C,Serper A,Dogan AL et al.Evaluation of the cytotoxicity of calcium phosphate root canal sealers by MTT assay.J Endodon,1999,25:811～3
9[9]Tai KW,Huarig FM,Chang YC.Cytotoxic evaluation of root canal filling materials on primary human oral fibroblast culture and a permanent hamster cell line.J Endodon,2001,27:571～3.
10[10]Schwarze T,Leyhausen G,Geurtsen W.Long-term cytocompatibility of various endodontic sealers using a new root canal model.J Endedon,2002,28:749～753
