Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Corrosion Resistance Evaluation in the Co-Cr Alloys for the Full and Removable Partial Denture Metal Frameworks and the Porcelain-fused-to-metal Crown

총의치와 국소의치 금속의치상용 코발트-크롬 합금과 금속소부도재관용 코발트-크롬 합금의 부식저항성 평가

  • Park, Soo-Chul (Department of Dental Technology, Gimcheon University) ;
  • Choi, Sung-Mi (Department of Dental Hygien, Daegu Health College) ;
  • Kang, Ji-Hun (Department of Optometry & Vision Science, Kyungwoon University)
  • Received : 2012.07.26
  • Accepted : 2012.09.21
  • Published : 2012.09.30
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Abstract

Purpose: This study was conducted to evaluate the corrosion resistance of metal ions of alloys and use the results as the dental health data. These were performed by examining the corrosion levels of Co-Cr alloys for the full and removable partial denture metal frameworks and porcelain-fused-to-metal crown, among the dental casting nonprecious alloys. Methods: The alloy specimens (N = 10) were manufactured in $15mm{\times}10mm{\times}1.2mm$ and stored in two types of corrosive solutions at $37^{\circ}C$ for seven days. The metal ions were quantitatively analyzed using the Inductively Coupled Plasma-Atomic Emission Spectrometer. Results: Of the three Co-Cr alloys, the Co ion concentration of the porcelain-fused-to-metal alloy was 1.512 ${\mu}g/cm^2$, which indicated the highest metal ion dissolution. The metal corrosion was higher in the more acidic pH 2.2 solution compared with the pH 4.4 solution. In all three Co-Cr alloys, Co ion dissolution was predominant in the two corrosive solutions. Conclusion: The corrosion resistance of the three Co-Cr alloys was high, indicating a good biocompatibility.

Keywords

References

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