Effect of glaze powder coating on adhesion of resin cements to zirconia ceramic

zirconia;glaze;critical plane strain energy;resin bond;fracture mechanics;ceramic;adhesion;fracture toughness;phosphate monomer;silane;acid etch;resin cement

Wong, Peng Sim ; Waddell, John Neil ; Al-Amleh, Basil ; van Vuuren, Wendy-Ann Jansen ; Lyons, Karl ; Li, Kai Chun

University of Otago

关键词: zirconia;    glaze;    critical plane strain energy;    resin bond;    fracture mechanics;    ceramic;    adhesion;    fracture toughness;    phosphate monomer;    silane;    acid etch;    resin cement;   

Others  :  https://ourarchive.otago.ac.nz/bitstream/10523/6002/1/WongPengSim2015DClinDent.pdf

美国|英语

来源: Otago University Research Archive

【 摘 要 】

ObjectivesThe current recommended protocol for bonding zirconia restorations to teeth involves the use of an adhesive system containing phosphate monomers. But there is limited evidence that phosphate monomer produces a bond comparable to an etched silanised glaze layer on zirconia. This study evaluated the effect of using an etched and silanised glazed porcelain layer on the interfacial fracture toughness between a zirconia ceramic and resin cements. The effect of a phosphate monomer primer on resin bond to glazed zirconia was also used in this study. MethodsForty rectangular-shaped yttrium stabilised zirconia ceramic plates (VITA In-Ceram YZ, VITA, Bad Sackingen, Germany) (length: 20mm; width: 7mm; thickness 2mm) were sintered prior to air abrasion with 100 µm Al2O3 at two bar pressure. Twenty specimens were glazed with Akzent Glaze Spray (VITA Zahnfabrik; Bad Sackingen, Germany) and then etched with 9% hydrofluoric acid for 180 seconds prior to being silanised with Monobond-S (Ivoclar Vivadent; Schaan, Liechtenstein). Glazed and non-glazed specimens (controls) were further divided into two groups (n = 10) and randomly allocated to one of two resin bonding systems, Variolink II and Multilink-Automix (Ivoclar Vivadent). The Multilink-Automix groups were then treated with Metal/Zirconia Primer (Ivoclar Vivadent). Specimens were aged for 24 hours in a 37 °C water bath. Utilising the method described by Cheng et al. (1999), 12mm glass rods were bonded to zirconia plates using the two resin bonding systems and brought to failure using a universal testing machine. Critical plane strain energy values were calculated. The de-bonded specimens were examined under bi-focal optical microscope and scanning electron microscope to determine the mode of failures. Data were analysed using analysis of variance and Dunnett-T3 post-hoc tests with SPSS with a statistical significance set at 5%.ResultsThe use of a glazed zirconia surface significantly improved the mean critical plane strain energy value (19.04 J/m2 to 202.35 J/m2) in the Variolink II group (p < 0.05), however there was no significant change (p > 0.05) with the Multilink-Automix Metal/Zirconia Primer group (59.40 J/m2 to 68.51 J/m2). In comparison to Variolink II, the mean value of Multilink-Automix group was significantly higher in the non-glazed group (19.04 J/m2 to 59.40 J/m2) (p < 0.05). Fractographic analysis showed predominantly cohesive (resin-resin) failure for the glazed groups and adhesive (resin-zirconia) failure in the non-glazed groups.ConclusionThe interfacial fracture toughness for glazed zirconia bonded to Variolink II resin cement was superior to air-abraded zirconia that had been surface treated with a phosphate monomer primer bonded to Multilink-Automix resin cement. The additional application of Metal/Zirconia Primer on a pre-silanised glaze layer reduces the resin bond efficacy.