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KMID : 0362120170390030153
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Journal of Technologic Dentistry
2017 Volume.39 No. 3 p.153 ~ p.159
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An analysis of shear bond strength of Co-Cr alloy of porcelain fused to metal and ceramic
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Im Joong-Jae
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Abstract
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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.
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KEYWORD
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Dental prosthesis, Dental technique, Shear bond strength
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