Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Mechanical and optical properties of alumina/zirconia-glass dental crown composites

인공치관용 알루미나/지르코니아-유리 복합체의 기계적 및 광학적 특성

  • 이득용 (대림대학 재료정보학과) ;
  • 장주웅 (㈜우리동명 치과재료연구소)
  • Published : 2003.06.01
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Abstract

Alumina/zirconia-glass composites prepared by melt-infiltration were investigated to evaluate the influence of zirconia addition on mechanical and optical properties of the composites and glass penetration kinetics. The infiltration distance was parabolic with respect to time as described by the Washburn equation and the penetration rate constant, K, decreased due to the reduction In pore size as the amount of zirconia rose. The zirconia addition increased lightness ($L^*$) but reduced K, transmittance and color sharpness ($C^*$) It can be concluded that the zirconia addition was not effective to the mechanical properties of the composites due to the increase in porosity even though the toughness of the composites increased when zirconia was added up to 15 wt%.

용융침투법으로 알루미나/지르코니아-유리 복합체를 제조하여 지르코니아 첨가가 복합체의 기계적 및 광학적 특성과 유리 침투 kinetic에 미치는 영향을 조사하였다. 유리 침투시간이 증가할수록 침투깊이는 Washburn식에 의한 포물선관계로 증가하였으며 침투 상수인 K는 기공 크기의 함수로 지르코니아 첨가량이 증가할수록 기공 크기의 감소로 감소하였다. 지르코니아 양이 증가함에 따라 명도($L^*$)는 증가하지만 유리 침투 상수(K), 투과율(transmittance), 채도($C^*$)가 감소하였다. 지르코니아가 15 wt% 첨가될 때까지 알루미나/지르코니아-유리 복합체의 인성값 증가를 보였지만 기공률의 증가로 인하여 기계적 특성 향상에는 크게 기여하지 않았다.

Keywords

References

  1. J. Prosthet. Dent v.67 no.6 A Reviews of the Strength properties of Dental Ceramics S.O.Hondrum https://doi.org/10.1016/0022-3913(92)90602-7
  2. University of Minnesota Ph.D. Dissertaion Strength and Fracture Toughness of Alumina-Glass Dental Composites Prepared by Melt-Infiltration W.D.Wolf
  3. University of Birmingham Ph.D.Dissertaion Strength Microstructure Relationships in a Dental Alumian Glass Composite H.Hornberger
  4. J. Am. Ceram. Soc. v.82 no.11 Mechanical Properties of Tape Cast Alumina-glass Dental Composites D-J.Kim;M.-H Lee;C.-E.Kim https://doi.org/10.1111/j.1151-2916.1999.tb02219.x
  5. Int. J. Prosthodintics v.8 no.3 Use of CAD/CAM System to Fabricate Dental Prostheses Part 1: CAD for a Clinical Crown Restoration T.Sohmura;J.Takahashi
  6. Intl. Sym. Advanced Materials with Biomedical Applications High Strength, High Reliable Allceramic Dental Bridges J.Gauckler;F.Filser;P.Kocher;H.Luthy;P.Scharer;A.Feher
  7. Glass-alumina Composites Prepared by Melt-infiltration: I.Effect of Alumina Particle Size v.38 no.9 D.Y.Lee;J.-W.Jang;D.-J.Kim;I.-S.Park;J.-K.Lee;M.-H.Lee;B.-Y.Kim
  8. J. Kor. Ceram. Soc v.39 no.2 Glass-alumina Composites Prepared by Melt-infiltration:Ⅱ. Kinetic Studes D.Y.Lee;J.-W.Jang;D.-J.Kim;I.-S.Park;J.-K.Lee;M.-H.Lee;B.-Y.Kim https://doi.org/10.4191/KCERS.2002.39.2.145
  9. Ceram.Intl. v.27 no.3 Raman Spectral Chracterization of Existing Phases in the ZrO₂ ­Y₂O₃Nb₂O₃System D.Y.Lee;J.­W.Jang;D.­J.Kim https://doi.org/10.1016/S0272-8842(00)00079-1
  10. J. Eur. Ceram. Soc v.22 no.13 Influence of Alumina Particle size on Fracture Toughness of (Y,Nb)TZP/Al₂O₃Composites D.Y.Lee;D.-J.Kim;B.­Y.Kim
  11. J. Mater. Sci. Lett. v.17 no.3 Low-temperature Phase Stability of Y₂O₃and Nb₂O₃Co-doped TZP Ceramics D.Y.Lee;D.­J.Kim;D.­H.Cho https://doi.org/10.1023/A:1006567808134
  12. Mater. Sci. & Eng. A v.A289 Chromaticity Hydrothermal Stability and Mechanical Properties of tZrO₂/Al₂O₃Composites Doped with Yttrium, Niobium and Ferric Oxides D.Y.Lee;D.­J.Kim;Y.­H.S.Song
  13. Annual book of ASTM Standards v.15 no.2 Standard Test-Method for Biaxial Flexure Strength(Modulus of Rupture) of Ceramic Substrates, ASTM Designation F 394-78 American Society for Testing and Materials
  14. ISO 6474: 1994(E) International Standard of Implants for Surgery Ceramic Materials Based on High Purity Alumina
  15. J. Am. Ceram. Soc. v.64 no.9 Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: Ⅱ.Strength Method P.Chantikul;G.R.Anstis;B.R.Lawn;D.B.Marshall https://doi.org/10.1111/j.1151-2916.1981.tb10321.x
  16. J. Mater. Sci. Lett. v.21 no.15 Properties of Glass-spinel Composites Prepared by Melt Infiltration D.Y.Lee;D.­J.Kim;Y.­S.Song https://doi.org/10.1023/A:1016528720776
  17. Mater. Sci. & Eng. v.A34 no.1 Effect of Alumina Particle Size and Distribution on Infiltration Rate and Fracture Toughness of Alumina-glass Composites Prepared by Melt Infiltration D.Y.Lee;D.­J.Kim;B.­Y.Kim
  18. J. Ceram. Soc. Jpn. v.102 no.2 Influence of Zirconia Addition on the Sintering Behavior of Bimodal Size Distributed Alumina Power Mixtures S.Taruta;K.Kawashima;K.Kitajima;N.Takusagawa;K.Okada;N.Otsuka https://doi.org/10.2109/jcersj.102.139
  19. Key Eng. Mater. v.240 Microstructure of Alumina and Alumina/zirconia-glass infiltrated Dental Ceramics M.Guazzato;M.Albakry;M.V.Swain;S.P.Ringer https://doi.org/10.4028/www.scientific.net/KEM.240-242.879
  20. Comm. Am. Ceram. Soc. v.71 no.2 Melt Infiltration Approach to Ceramic Matrix Composites W.B.Hillig
  21. J. Am. Ceram. Soc. v.79 no.2 Capillary Infiltration Rates into Porous Media with Applications to Silcomp Processing E.O.Einser https://doi.org/10.1111/j.1151-2916.1996.tb08125.x