Push-out bond strength of different tricalcium silicate-based filling materials to root dentin

Jorge Henrique Stefaneli Marques, Yara Teresinha Corrêa Silva-Sousa, Fuad Jacob Abi Rached-Júnior, Luciana Martins Domingues de Macedo, Jardel Francisco Mazzi-Chaves, Josette Camilleri, Manoel Damião Sousa-Neto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The aim of this study was to evaluate the bond strength of different triccalcium silicate cements to retrograde cavity using a push out test. Thirty maxillary central incisors were shaped using #80 hand files and sectioned transversally. Root slices were obtained from the apical 4 mm after eliminating the apical extremity. The specimens were embedded in acrylic resin and positioned at 45° to the horizontal plane for preparation of root-end cavities with a diamond ultrasonic retrotip. The samples were divided into three groups according to the root-end filling material (n = 10): MTA Angelus, ProRoot MTA and Biodentine. A gutta-percha cone (#80) was tugged-back at the limit between the canal and the root-end cavity. The root-end cavity was filled and the gutta-percha cone was removed after complete setting of the materials. The specimens were placed in an Instron machine with the root-end filling turned downwards. The push-out shaft was inserted in the space previously occupied by the gutta-percha cone and push out testing was performed at a crosshead speed of 1.0 mm/min. There was no statistically significant difference in resistance to push out by the materials tested (p > 0.01). MTA Angelus and ProRoot MTA showed predominantly mixed failure while Biodentine exhibited mixed and cohesive failures. The tricalcium silicate-based root-end filling materials showed similar bond strength retrograde cavity.

Original languageEnglish
Article numbere18
JournalPesquisa odontologica brasileira = Brazilian oral research
Publication statusPublished - 8 Mar 2018


  • Analysis of Variance
  • Bismuth/chemistry
  • Calcium Compounds/chemistry
  • Dental Bonding/methods
  • Dental Pulp Cavity/drug effects
  • Dental Restoration Failure
  • Dentin/drug effects
  • Gutta-Percha/chemistry
  • Humans
  • Materials Testing
  • Oxides/chemistry
  • Reproducibility of Results
  • Root Canal Filling Materials/chemistry
  • Silicates/chemistry
  • Surface Properties/drug effects
  • Tooth Root/drug effects


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