Bond strength of selected composite resin-cements to zirconium-oxide ceramic
Med. oral patol. oral cir. bucal (Internet)
; 18(1): 115-123, ene. 2013. ilus, tab
Artigo
em Inglês
| IBECS
| ID: ibc-108231
Biblioteca responsável:
ES1.1
Localização: BNCS
Objectives:
The aim of this study was to evaluate bond strengths of zirconium-oxide (zirconia) ceramic and a selection of different composite resin cements. StudyDesign:
130 Lava TM cylinders were fabricated. The cylinders were sandblasted with 80 µm 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 or more than two independent samples and Mann-Whitney for two independent samples. Given the large number of combinations, Bonferroni correction was applied (alfa=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.Conclusions:
Best results were provided by dual-polymerizing cements associated with sandblasting or silica coating and a bonding agent containing MDP (AU)RESUMEN
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Coleções:
Bases de dados nacionais
/
Espanha
Base de dados:
IBECS
Assunto principal:
Zircônio
/
Colagem Dentária
/
Ligas Metalo-Cerâmicas
/
Cimentos de Resina
Limite:
Humanos
Idioma:
Inglês
Revista:
Med. oral patol. oral cir. bucal (Internet)
Ano de publicação:
2013
Tipo de documento:
Artigo
Instituição/País de afiliação:
Polytechnic University/Spain
/
University of Valencia/Spain