Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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An analysis of shear bond strength of Co-Cr alloy of porcelain fused to metal and ceramic

도재용착용 비귀금속 합금(Co-Cr)과 세라믹의 소성술식에 따른 전단결합강도 분석

  • Im, Joong-Jae (Department of Dental Technology, Daejeon Health Institute of Technology Academy of Removable Dental Technology)
  • 임중재 (대전보건대학교 치기공과, 가철성치과기공학회)
  • Received : 2017.05.01
  • Accepted : 2017.08.25
  • Published : 2017.09.30
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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.

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References

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