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Bond strength of selected composite resin-cements to zirconium-oxide ceramic

By Juan-Luis Román-Rodríguez, Antonio Fons-Font, Vicente Amigó Borrás, María Granell-Ruiz, David Jerónimo Busquets Mataix, Rubén Agustín-Panadero and María-Fernanda Solá-Ruiz

Abstract

Objectives: The aim of this study was to evaluate bond strengths of zirconium-oxide (zirconia) ceramic and a selection of different composite resin cements. Study Design: 130 Lava TM cylinders were fabricated. The cylinders were sandblasted with 80 &#956;m aluminium oxide or silica coated with CoJet Sand. Silane, and bonding agent and/or Clearfil Ceramic Primer were applied. One hundred thirty composite cement cylinders, comprising two dual-polymerizing (Variolink II and Panavia F) and two autopolymerizing (Rely X and Multilink) resins were bonded to the ceramic samples. A shear test was conducted, followed by an optical microscopy study to identify the location and type of failure, an electron microscopy study (SEM and TEM) and statistical analysis using the Kruskal-Wallis test for more than two independent samples and Mann-Whitney for two independent samples. Given the large number of combinations, Bonferroni correction was applied (&#945;=0.001). Results: Dual-polymerizing cements provided better adhesion values (11.7 MPa) than the autopolymerizing (7.47 MPa) (p-value M-W<0.001). The worst techniques were Lava TM + sandblasting + Silane + Rely X; Lava TM + sandblasting + Silane + Multilink and Lava TM + CoJet + silane + Multilink. Adhesive failure (separation of cement and ceramic) was produced at a lesser force than cohesive failure (fracture of cement) (p-value M-W<0.001). Electron microscopy confirmed that the surface treatments modified the zirconium-oxide ceramic, creating a more rough and retentive surface, thus providing an improved micromechanical interlocking between the cement and the ceramic.The authors acknowledge the support of the 'Microcluster de Biomateriales Odontologicos' of the VLC/CAMPUS Valencia International Campus of Excellence.Román-Rodríguez, J.; Fons-Font, A.; Amigó Borrás, V.; Granell-Ruiz, M.; Busquets Mataix, DJ.; Agustín-Panadero, R.; Solá-Ruiz, M. (2013). Bond strength of selected composite resin-cements to zirconium-oxide ceramic. Medicina Oral, Patología Oral y Cirugía Bucal. 18(1):115-123. doi:10.4317/medoral.18243S11512318

Topics: Shear bond strength, Silica coating, Surface treatment, Zirconia ceramics, Phosphate monomer, CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA
Publisher: 'Medicina Oral, S.L.'
Year: 2013
DOI identifier: 10.4317/medoral.18243
OAI identifier: oai:riunet.upv.es:10251/32462
Provided by: RiuNet
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