Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Comparative Study of Properties of Dental Zirconia According to Microwave Sintering Method

마이크로웨이브 소결방법에 따른 치과용 지르코니아의 물리적 특성

  • Kim, Tae-Suk (Department of Dental Technology, Masan University) ;
  • Yu, Chin-Ho (Department of Dental Technology, Masan University) ;
  • Kim, Gi-Chul (School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Park, Won-Uk (School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Seo, Jung-Il (School of Nano and Advanced Materials Engineering, Gyeongsang National University) ;
  • Hwang, Kyu-Hong (School of Nano and Advanced Materials Engineering, Gyeongsang National University)
  • 김태석 (마산대학교 치기공과) ;
  • 유진호 (마산대학교 치기공과) ;
  • 김기철 (경상대학교 나노신소재공학부) ;
  • 박원욱 (경상대학교 나노신소재공학부) ;
  • 서정일 (경상대학교 나노신소재공학부) ;
  • 황규홍 (경상대학교 나노신소재공학부)
  • Received : 2012.01.31
  • Accepted : 2012.03.24
  • Published : 2012.03.30
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Abstract

Purpose: Densification and mechanical properties of dental zirconia ceramics were evaluated by different sintering methods. Materials and Methods: Y-TZP zirconia block(Kavo $Everest^{(R)}$ ZS blank, Kavo dental GmbH, Bismarckring, Germany) was used in this study. Sintering were performed in heat sintering furnace and microwave sintering furnace, and then experimented and analyzed on a change in densification according to the sintering time, a change in densification according to thickness, flexural strength and micro-structure in zirconia specimens. Results: Microwave sintering was very effective in considerable mechanical properties such as flexural strength and bulk density was drastically increased than conventional electric heating method. It is also shown that microwave sintering time was faster and more economical than common method to be present in qualities which equal or exceed. Conclusion: It will be important to seek the accurate sintering condition of dental zirconia by microwave sintering method and the continuous research is necessary for the study of relationship between sintering methods and mechanical properties.

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References

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