title: Evaluation of bond strength of various epoxy resin based sealers in oval shaped root canals.
abstract: BACKGROUND
  The aim of this study was to evaluate the bond strength of AH plus, Acroseal, and Adseal to the root canal dentin.
  
  
  METHODS
  A total of 36 single-rooted, mandibular premolar teeth were used. Root canal shaping procedures were performed with ProTaper rotary instruments (Dentsply Maillefer) up to size F4. The prepared samples were then randomly assembled into 3 groups (n = 12). For each group, an ultrasonic tip (size 15, 0.02 taper) which was also coated with an epoxy resin based sealer and placed 2 mm shorter than the working length. The sealer was then activated for 10 s. A push-out test was used to measure the bond strength between the root canal dentine and the sealer. Kruskal-Wallis test to evaluate the push-out bond strength of epoxy based sealer (P = 0.05). The failure mode data were statistically analyzed using Pearson's chi square test (P = 0.05).
  
  
  RESULTS
  Kruskal-Wallis test indicated that there were no statistically significant difference among the push out bond strength values of 3 mm (p = 0.123) and 6 mm (P = 0.057) for groups, there was statistically significant difference push out bond strength value of 9 mm (P = 0.032). Pearson's chi square test showed statistically significant differences for the failure types among the groups.
  
  
  CONCLUSIONS
  Various epoxy resin based sealers activated ultrasonically showed similar bond strength in oval shaped root canals. Apical sections for all groups have higher push out bond strength values than middle and coronal sections.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ordu University, 52000, Ordu, Turkey. dt_fatihcakici@hotmail.com.
authors.forename: Fatih
authors.initials: F
authors.lastname: Cakici
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ordu University, 52000, Ordu, Turkey.
authors.forename: Elif Bahar
authors.initials: EB
authors.lastname: Cakici
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Karadeniz technical University, Trabzon, Turkey.
authors.forename: Kadir Tolga
authors.initials: KT
authors.lastname: Ceyhanli
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey.
authors.forename: Ersan
authors.initials: E
authors.lastname: Celik
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ordu University, 52000, Ordu, Turkey.
authors.forename: Funda Fundaoglu
authors.initials: FF
authors.lastname: Kucukekenci
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Karadeniz technical University, Trabzon, Turkey.
authors.forename: Arif Onur
authors.initials: AO
authors.lastname: Gunseren
mesh_terms: D001840:Dental Bonding; D003786:Dental Pulp Cavity; D003804:Dentin; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials; D018915:Root Canal Preparation
chemical_list: D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D006171:Gutta-Percha
keywords: Bond strength; Epoxy resin-based sealers; Root canal filling; Ultrasound