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A novel porous silica-zirconia coating for improving bond performance of dental zirconia

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2021年第3期22卷 214-222页

作者： Zhiwei SU Mingxing LI Ling ZHANG Chaoyang WANG Leiqing ZHANG Jingqiu XU Baiping FU The Affiliated Hospital of Stomatology School of StomatologyZhejiang University School of Medicineand Key Laboratory of Oral Biomedical Research of Zhejiang ProvinceHangzhou 310006China

Objective:To coat a zirconia surface with silica-zirconia using a dip-coating technique and evaluate its effect on resin-zirconia shear bond strength(SBS).Methods:A silica-zirconia suspension was prepared and used to coat a zirconia surface using a dip-coating technique.One hundred and eighty-nine zirconia disks were divided into three groups according to their different surface treatments(polishing,sandblasting,and silica-zirconia coating).Scanning electron microscopy(SEM),energy dispersive X-ray(EDX),and X-ray diffraction(XRD)were used to analyze the differently treated zirconia surfaces.Different primer treatments(Monobond N,Z-PRIME Plus,and no primer)were also applied to the zirconia surfaces.Subsequently,180 composite resin cylinders(Filtek Z350)were cemented onto the zirconia disks with resin cement(RelyX Ultimate).The SBS was measured after water storage for 24 h or 6 months.The data were analyzed by two-way analysis of variance(ANOVA).Results:SEM and EDX showed that the silica-zirconia coating produced a porous layer with additional Si,and XRD showed that only tetragonal zirconia was on the silica-zirconia-coating surface.Compared with the control group,the resin-zirconia SBSs of the,andblasting group and silica-zirconia-coating group were significantly increased(Psilica-zirconia coating followed by the application of Monobond N produced the highest SBS(Pzirconia SBS(Pcoating with silica-zirconia might be a feasible way to improve resin-zirconia bonding.

关键词： silica-zirconia coating zirconia Bond performance Shear bond strength(SBS)

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