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  • Title: Shear bond strengths of four resin cements to cobalt-chromium alloy.
    Author: Yoshida K, Sawase T, Watanabe I, Atsuta M.
    Journal: Am J Dent; 1995 Dec; 8(6):285-8. PubMed ID: 8695003.
    Abstract:
    PURPOSE: To evaluate the shear bond strengths of four resin cements to cobalt-chromium (Co-Cr) alloy using two adhesive primers. MATERIALS AND METHODS: The adhesive luting agents Imperva Dual (ID), Panavia 21 (P21), Super-Bond C&B (SB) and Bistite Resin Cement (BR), and the adhesive primers Metal Primer (MP) and Cesead Opaque Primer (COP) were used. Two sizes of dental casting alloy disks were nonprimed or primed and cemented with each adhesive luting agent. The specimens were stored in water at 37 degrees C for 1 day, and then immersed alternately in water baths at 4 degrees C and 60 degrees C for 1 minute each for up to 100,000 thermocycles before shear mode testing at a cross-head speed of 0.5 mm/minute. RESULTS: The application of COP was effective for improving the shear bond strengths of ID, SB or BR to Co-Cr alloy compared with nonprimed specimens and those primed with MP. However, when Co-Cr alloy was cemented with P21, there were no significant differences in bond strengths between the three groups at all thermocycles.
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