title: [The correlation analysis on Enterococcus faecalis biofilm and clinical manifestation in retreatment of root canal].
abstract: OBJECTIVE
  To detect the ability of Enterococcus faecalis (E. faecalis) biofilm formation and explore the relationship between E. faecalis biofilm formation ability and clinical manifestation.
  
  
  METHODS
  96 well plate with the establishment of 53 E. faecalis in vitro biofilm model, combined with crystal violet staining, was used to test the biofilm formation ability of the clinical isolates E. faecalis and analyze the relationship between biofilm formation capacity and clinical manifestation.
  
  
  RESULTS
  In total 53 E. faecalis strains, 40 strains(75.47%) had biofilm forming ability. Statistical analysis revealed that the capacities of biofilm formation between E. faecalis isolated from with fistula and without fistula was significantly different (P<0.05).
  
  
  CONCLUSIONS
  In the retreatment of root canal, the ability of biofilm formation of E. faecalis separated from the teeth without fistula is better than those separated from the teeth with fistula.
authors.affiliation: Dept. of Oral Medicine, School of Stomatology, Dalian Medical University, Dalian 116044, China.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Zheng
authors.forename: Lina
authors.initials: L
authors.lastname: Wang
authors.forename: Qiyi
authors.initials: Q
authors.lastname: Song
authors.forename: Jiyao
authors.initials: J
authors.lastname: Li
authors.forename: Weidong
authors.initials: W
authors.lastname: Niu
mesh_terms: D018441:Biofilms; D003786:Dental Pulp Cavity; D013293:Enterococcus faecalis; D006801:Humans; D019233:Retreatment; D012390:Root Canal Therapy