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http://dx.doi.org/10.14347/kadt.2017.39.3.153

An analysis of shear bond strength of Co-Cr alloy of porcelain fused to metal and ceramic  

Im, Joong-Jae (Department of Dental Technology, Daejeon Health Institute of Technology Academy of Removable Dental Technology)
Publication Information
Journal of Technologic Dentistry / v.39, no.3, 2017 , pp. 153-159 More about this Journal
Abstract
Purpose: In this study, a corresponding porcelain coating material was applied to dental Co-Cr metal among PFM. Methods: The bonding strength of the fired specimens was measured by a three-point flexural rigidity test. SEM/EDS was used to observe the surface component of specimens. Results: First, All groups were higher than the minimum bonding strength of 25 MPa specified in ISO 9693 for dental metal-ceramics specimens. Second, The bonding strength of control group(WO) is 44.64 MPa. Experimental group DM was 35.45 MPa and DP was 31.82 MPa(P<0.05). Tukey's HSD tests results have shown that the bonding strength in control group(WO) is higher than that of experimental group(DM, DP). Third, In the case of metal - porcelain bonding strength, the application of opaque porcelain and firing were higher than those of the group treated with degassing process. Conclusion: The bonding strength was higher when the powder opaque porcelain was applied than the paste opaque porcelain.
Keywords
Dental prosthesis; Dental technique; Shear bond strength;
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