title: Push-out Bond Strength of Injectable Pozzolan-based Root Canal Sealer.
abstract: BACKGROUND
  The present study aimed to rank the bond strength to root dentin of a new injectable pozzolan-based root canal sealer, EndoSeal MTA, as compared with MTA Fillapex and AH Plus.
  
  
  METHODS
  Eighteen dentinal slices (1 ± 0.1 mm) were obtained from the middle third of 6 maxillary incisors previously selected. Three canal-like holes with 0.8 mm diameter were drilled perpendicularly on the axial surface of each slice. Then, a standardized irrigation was applied for all holes that were subsequently filled with 1 of 3 test root canal sealers. After that, slices were stored in contact with phosphate-buffered saline solution (pH 7.2) for 7 days at 37°C before the push-out assay. Friedman test and Wilcoxon signed rank test with a Bonferroni correction were used to rank the results. Significance boundary was set at α = 5%.
  
  
  RESULTS
  Friedman test confirmed a significant dissimilarity in push-out ranks among the tested cements (P < .01). Wilcoxon signed rank test demonstrated AH Plus had significant superior resistance to dislodgment compared with Endo Seal (P < .01) or MTA Fillapex (P < .01), whereas MTA Fillapex presented the lowest push-out values as compared with Endo Seal (P < .01) or AH Plus (P < .01).
  
  
  CONCLUSIONS
  EndoSeal presents satisfactory bond strength performance for application in endodontic therapy compared with MTA Fillapex, and although it displays a new alternative of injectable bio-tight root canal sealer, it is not able to improve adhesion compared with AH Plus.
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: nogueiraemmanuel@hotmail.com.
authors.forename: Emmanuel João Nogueira Leal
authors.initials: EJ
authors.lastname: Silva
authors.affiliation: Department of Endodontics, Rio de Janeiro State University (UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Nancy Kudsi
authors.initials: NK
authors.lastname: Carvalho
authors.affiliation: Department of Endodontics, Rio de Janeiro State University (UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marina C
authors.initials: MC
authors.lastname: Prado
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Mayara
authors.initials: M
authors.lastname: Zanon
authors.affiliation: Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), 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: Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Gustavo
authors.initials: G
authors.lastname: De-Deus
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry; D001843:Bone Cements / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry; D001840:Dental Bonding; D003786:Dental Pulp Cavity; D003804:Dentin / Q000737:chemistry; D006801:Humans; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000379:methods; D017640:Silicates / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D001843:Bone Cements; D017610:Calcium Compounds; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D017640:Silicates; D015035:Zinc Oxide-Eugenol Cement; C112894:canals sealer; C031293:calcium silicate
keywords: MTA; pozzolan; push-out; root canal obturation; root canal sealer