Shear bond strength of a ceramic to Co-Cr alloys

The Journal of Prosthetic Dentistry
Renato Morales JoiasEstevao Tomomitsu Kimpara

Abstract

Different combinations of Co-Cr alloys bonded to ceramic have been used in dentistry; however, the bond strength of ceramic to metal can vary because of different compositions of these alloys. The purpose of this study was to evaluate the shear bond strength of a dental ceramic to 5 commercially available Co-Cr alloys. Five Co-Cr alloys (IPS d.SIGN 20, IPS d.SIGN 30, Remanium 2000, Heranium P, and Wirobond C) were tested and compared to a control group of an Au-Pd alloy (Olympia). Specimen disks, 5 mm high and 4 mm in diameter, were fabricated with the lost-wax technique. Sixty specimens were prepared using opaque and dentin ceramics (VITA Omega 900), veneered, 4 mm high and 4 mm in diameter, over the metal specimens (n=10). The shear bond strength test was performed in a universal testing machine with a crosshead speed of 0.5 mm/min. After shear bond testing, fracture surfaces were evaluated in a stereomicroscope under x25 magnification. Ultimate shear bond strength (MPa) data were analyzed with 1-way ANOVA and the Tukey HSD test (alpha =.05). The mean (SD) bond strengths (MPa) were: 61.4 (7.8) for Olympia; 94.0 (18.9) for IPS 20; 96.8 (10.2) for IPS 30; 75.1 (12.4) for Remanium; 71.2 (14.3) for Heranium P; and 63.2 (10.9) for...Continue Reading

Citations

Aug 26, 2009·The Journal of Prosthetic Dentistry·Yurdanur UcarCem Kurtoglu
Jul 28, 2015·The Journal of Prosthetic Dentistry·Jie-yin LiJian-tao Ye
Oct 19, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Luis Gustavo Oliveira de VasconcellosMarco Antonio Bottino
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