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Information Journal Paper

Title

SHEAR BOND STRENGTH OF PORCELAIN TO A BASE-METAL COMPARED TO ZIRCONIA CORE

Pages

  367-372

Abstract

 Statement of Problem: Recent clinical results for Zirconia all-ceramic restorations have revealed that the fracture rate 6-15% of the Zirconia framework is so low and the core of Zirconia has high stability. However, chipping-off fractures of porcelain are the most common reason for failures of Zirconia in the fixed partial dentures.Objectives: The purpose of this study was to compare the shear bond strength (SBS) of porcelain in the porcelain fused to metal and all-ceramic crowns with Zirconia core.Materials and Methods: Two groups were selected: porcelain fused to metal (PFM) and porcelain fused to Zirconia (PFZ) (n=30).In the PFM group, a wax model (10´10´10mm) was used to cast metal base (Ni_Cr alloy). In the PFZ group, an acrylic cubic model (10´10´10mm) was made as Zirconia model for scanning.15 cubic Zirconia samples were milled by CAD-CAM. The procedure of porcelain veneering was conducted by the conventional layering technique up to 2 mm thickness (2.5´2.5´2 mm). All specimens were stored in water for 48 hrs. Thermal cycling was conducted for 20000 cycles between 55°C and 5ºC alternatively for 30s.All samples were mounted in acrylic resin and the SBS test was performed, using a universal testing machine. The analysis of data was performed at a significance level of 0.05 using Kolmogorov-Smirnov and Mann-Whitney U-test.Results: Mean of SBS in PFM and PFZ was 24.57 and 20.88, respectively. The results of Mann-Whitney test showed that there was no statistically significant difference between the two groups of porcelain fused to metal and Zirconia in item shear bond strength (p=0.455).Conclusions: There was no significant difference between the two groups of PFM and PFZ in the item SBS.

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    Cite

    APA: Copy

    ABRISHAM, S.M., FALLAH TAFTI, A., KHEIRKHAH, S., & TAVAKOLI, MOHAMMADAMIN. (2017). SHEAR BOND STRENGTH OF PORCELAIN TO A BASE-METAL COMPARED TO ZIRCONIA CORE. JOURNAL OF DENTAL BIOMATERIALS, 4(1), 367-372. SID. https://sid.ir/paper/343899/en

    Vancouver: Copy

    ABRISHAM S.M., FALLAH TAFTI A., KHEIRKHAH S., TAVAKOLI MOHAMMADAMIN. SHEAR BOND STRENGTH OF PORCELAIN TO A BASE-METAL COMPARED TO ZIRCONIA CORE. JOURNAL OF DENTAL BIOMATERIALS[Internet]. 2017;4(1):367-372. Available from: https://sid.ir/paper/343899/en

    IEEE: Copy

    S.M. ABRISHAM, A. FALLAH TAFTI, S. KHEIRKHAH, and MOHAMMADAMIN TAVAKOLI, “SHEAR BOND STRENGTH OF PORCELAIN TO A BASE-METAL COMPARED TO ZIRCONIA CORE,” JOURNAL OF DENTAL BIOMATERIALS, vol. 4, no. 1, pp. 367–372, 2017, [Online]. Available: https://sid.ir/paper/343899/en

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