title: Effect of gutta-percha solvents on the bond strength of two resin-based sealers to root canal dentin.
abstract: OBJECTIVE
  To evaluate the effect of two gutta percha solvents on the bond strength of two resin-based sealers to root canal dentin.
  
  
  METHODS
  Root canals of extracted single rooted human mandibular premolars (n = 60) were decoronated and instrumented with a rotary NiTi system to an apical size of 40 and randomly divided into three groups (n = 20) based on the chemical treatment: Group I, saline (control); group II, Xylene and group III, Endosolv E. All groups were divided into two sub-groups (n = 10) based on the root filling material: sub-group A, epoxy resin sealer (AH Plus); sub-group B, methacrylate resin sealer (Epiphany). Roots were then sectioned and push-out tests were performed. The data was analysed using two-way analysis of variance (ANOVA) and a multiple comparison test (p = 0.05).
  
  
  RESULTS
  There was a significant difference in bond strength of both sealers between the control and test groups (p < 0.05). The bond strength of the epoxy resin sealer (sub-group A) in group II was significantly lower than in group III (p < 0.05). However, there was no significant difference between groups II and III for the methacrylate resin sealer (sub-group b) (p > 0.05).
  
  
  CONCLUSIONS
  Gutta Percha solvents had an adverse effect on bond strengths of resin sealers to root canal dentin. This was dependent on the chemistry of the solvent and the sealer.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha University , Chennai, Tamil Nadu , India.
authors.forename: Iffat
authors.initials: I
authors.lastname: Nasim
authors.forename: Prasanna
authors.initials: P
authors.lastname: Neelakantan
authors.forename: C V
authors.initials: CV
authors.lastname: Subbarao
mesh_terms: D003804:Dentin / Q000737:chemistry*; D006171:Gutta-Percha; D008422:Materials Testing; D012387:Root Canal Filling Materials; D012997:Solvents / Q000737:chemistry*
chemical_list: D012387:Root Canal Filling Materials; D012997:Solvents; D006171:Gutta-Percha
keywords: AH plus; Endosolv E; bond strength; epiphany; xylene