Effect of the bonding strategy on the tensile retention of full-contour zirconia crowns

Sabrina A. Feitosa, Fernanda Campos, Walter Kenji Yoshito, Dolores R.R. Lazar, Valter Ussui, Luiz Felipe Valandro, Marco A. Bottino, Marco C. Bottino

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This study evaluated the effect of distinct bonding strategies on the retention of full-contour zirconia ceramic (Y-TZP, FCZ) crowns, and it characterized some physicochemical and mechanical properties of FCZ ceramic and its corresponding glazing system. To evaluate retention strength, dies were made with a dentin-analogue material to simulate a prepared tooth. FCZ crowns were manufactured using CAD-CAM technology and allocated into groups according to the bonding strategy: no ceramic treatment (PF – Panavia F cementation), glaze (GL), tribochemical silica coating (CJ), CJ + GL, and piranha solution followed by glaze (PS + GL). The specimens were subjected to thermocycling and storage in distilled water for 100 days before the retention tests. FCZ presented a porosity volume fraction of 0.2%, an apparent density of 6.06 g/cm3, Vickers hardness of 12.4 ± 0.07 GPa, and fracture toughness of 5.54 ± 0.24 MPa m1/2. SEM revealed a homogeneous microstructure composed of submicron-sized grains. XRD identified mainly zirconia's tetragonal phase. Glaze powder morphology was observed to be irregular, with a nanometric particle size, and a diffraction pattern characteristic of an amorphous material with several peaks of leucite. The PF and GL groups had higher retention values. The majority of the groups presented pre-test bonding failures, and two catastrophic failures of the FCZ-crown (GL and PF groups) were noted. The use of an MDP-containing resin cement or glaze application might improve retention of the FCZ crowns.

Original languageEnglish (US)
Pages (from-to)106-112
Number of pages7
JournalInternational Journal of Adhesion and Adhesives
Volume85
DOIs
StatePublished - Oct 2018

Keywords

  • Adhesion
  • MDP
  • Properties
  • Retention strength
  • Surface conditioning
  • Yttria-stabilized tetragonal zirconia polycrystals
  • Zirconia

ASJC Scopus subject areas

  • Biomaterials
  • Chemical Engineering(all)
  • Polymers and Plastics

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    Feitosa, S. A., Campos, F., Yoshito, W. K., Lazar, D. R. R., Ussui, V., Valandro, L. F., Bottino, M. A., & Bottino, M. C. (2018). Effect of the bonding strategy on the tensile retention of full-contour zirconia crowns. International Journal of Adhesion and Adhesives, 85, 106-112. https://doi.org/10.1016/j.ijadhadh.2018.06.006