title: Push-out Bond Strength of Fast-setting Mineral Trioxide Aggregate and Pozzolan-based Cements: ENDOCEM MTA and ENDOCEM Zr.
abstract: BACKGROUND
  The present study investigated the root canal dentin bond strength of 2 newly developed fast-setting mineral trioxide aggregate (MTA) and pozzolan-based cements: ENDOCEM MTA (Maruchi, Wonju, Korea) and ENDOCEM Zr (Maruchi). White MTA (Angelus, Londrina, Brazil) was used as the reference material for comparison.
  
  
  METHODS
  Root slices (1 mm ± 0.1 mm) were obtained from the middle third of 15 maxillary incisors previously selected. Three canal-like holes (0.8 diameter) were drilled perpendicularly on the axial surface of each root slice. A standardized irrigation protocol was applied for all samples, and after drying, each hole was filled with 1 of 3 test repair materials. Finally, slices were stored in contact with phosphate-buffered saline solution (pH = 7.2) for 7 days at 37°C before the push-out assay. Data were nonparametrically evaluated at α = 5%.
  
  
  RESULTS
  The Friedman test was unable to confirm a significant dissimilarity in push-out ranks among the tested cements (P = .220).
  
  
  CONCLUSIONS
  The new fast-setting MTA and pozzolan-based cements ENDOCEM MTA and ENDOCEM Zr present suitable bond strength performance, which is comparable with white MTA.
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: nogueiraemmanuel@hotmail.com.
authors.forename: Emmanuel João Nogueira Leal
authors.initials: EJNL
authors.lastname: Silva
authors.affiliation: Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Nancy Kudsi
authors.initials: NK
authors.lastname: Carvalho
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marta Reis da Costa Labanca
authors.initials: MRDCL
authors.lastname: Guberman
authors.affiliation: Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marina
authors.initials: M
authors.lastname: Prado
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Plinio Mendes
authors.initials: PM
authors.lastname: Senna
authors.affiliation: Department of Restorative Dentistry II, Federal University of Maranhão, São Luis, Maranhão, Brazil.
authors.forename: Erick M
authors.initials: EM
authors.lastname: Souza
authors.affiliation: Deparment of Endodontics, School of Dentistry, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil.
authors.forename: Gustavo
authors.initials: G
authors.lastname: De-Deus
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods / Q000592:standards; D003738:Dental Cements / Q000737:chemistry*; D003799:Dental Stress Analysis; D004338:Drug Combinations; D006801:Humans; D010087:Oxides / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C586519:endocem; C086631:mineral trioxide aggregate; C033301:bismuth oxide; D015040:Zirconium; C028541:zirconium oxide; D001729:Bismuth
keywords: Bond strength; cements; mineral trioxide aggregate; pozzolan; push-out; root canal materials