Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Analysis of the bonding strength according to surface treatments of dental Co-Cr alloy for porcelain fused to metal

치과용 Co-Cr 금속도재관의 표면처리에 의한 도재와의 결합 강도 분석

  • Park, Hee-Geun (Department of Dental Technology, Jinju Health College) ;
  • Park, Won-UK (Department of Dental Technology, Jinju Health College) ;
  • Zhao, Jinming (School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Hwang, Kyu-Hong (School of Nano and Advanced Materials Engineering, Gyeongsang National University)
  • 박희근 (진주보건대학교 치기공과) ;
  • 박원욱 (진주보건대학교 치기공과) ;
  • 조경명 (경상대학교 나노신소재공학부) ;
  • 황규홍 (경상대학교 나노신소재공학부)
  • Received : 2016.07.07
  • Accepted : 2016.09.20
  • Published : 2016.09.30
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Abstract

Purpose: Observation of Oxide Film Formation and Bonding Strength according to surface treatment of Co-Cr Alloy for porcelain fused to Metal. Methods: metal specimens $0.5mm{\times}25mm{\times}4mm$ in size were made using Co-Cr alloys for porcelain fused to metal crown (Heraenium P, Tae jung Medis). Dental porcelain $0.5mm{\times}25mm{\times}4mm$ in size was sintered on the metal specimens after changing the etching time, sandblasting condition, and heat treatment temperature. Subsequently, the bonding strength was compared by the three-point flexural strength test using a universal testing machine (UTM) to observe the fracture surface and oxidized layers. Results: With regard to the experimental group treated with acid-etching, Specimen 1 treated for 25 minutes (B-3) showed the highest bonding strength, and Specimen 2 treated only with sandblasting showed the most excellent bonding force at 3.5 bar (C-3). With regard to the experimental group treated with sandblasting at 3.5 bar after acid-etching for 25 minutes, Specimen 3 with heat treatment at $980^{\circ}C$ (D-3) showed the highest bonding strength. Conclusion: The specimen which went through both sandblasting and etching, showed an excellent ceramicmetal bond strength.

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References

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