The effect of investment materials on the surface of cast fluorcanasite glasses and glass–ceramics

  • Sanchita Bandyopadhyay-Ghosh
  • Ian M. Reaney
  • Antony Johnson
  • Kathryn Hurrell-Gillingham
  • Ian M. Brook
  • P. V. Hatton


Modified fluorcanasite glass–ceramics were produced by controlled two stage heat-treatment of as-cast glasses. Castability was determined using a spiral castability test and the lost-wax method. Specimens were cast into moulds formed from gypsum and phosphate bonded investments to observe their effect on the casting process, surface roughness, surface composition and biocompatibility. Both gypsum and phosphate bonded investments could be successfully used for the lost-wax casting of fluorcanasite glasses. Although the stoichiometric glass composition had the highest castability, all modified compositions showed good relative castability. X-ray diffraction showed similar bulk crystallisation for each glass, irrespective of the investment material. However, differences in surface crystallisation were detected when different investment materials were used. Gypsum bonded investment discs showed slightly improved in vitro biocompatibility than equivalent phosphate bonded investment discs under the conditions used.


Gypsum Glass Frit Cast Surface Parent Glass Investment Material 
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The authors would like to acknowledge the Overseas Research Studentship (ORS) committee for providing the funding and Mr. Ian Watts and Mr. Dean Haycock for their help in glass melting. The authors wish to acknowledge Merck Inc. for their permission to use the ROS 17/2.8 cell line.


  1. 1.
    A. JOHNSON, M. Y. SHAREEF, J. M. WALSH, P. V. HATTON, R. VAN NOORT and R. G. HILL, Dent. Mat. 14 (1998) 412CrossRefGoogle Scholar
  2. 2.
    A. JOHNSON, M. Y. SHAREEF, R. VAN NOORT and J. M. WALSH, Dent. Mat. 16 (2000) 280CrossRefGoogle Scholar
  3. 3.
    L. L. HENCH and E. C. ETHERIDGE, Biomaterials: An Interfacial Approach (New York: Academic Press, 1982) p. 1Google Scholar
  4. 4.
    T. KOKUBO, L.L. HENCH and J. WILSON, An Introduction to Bioceramics (Singapore: World Scientific Publishing Co., 1993) p. 75Google Scholar
  5. 5.
    R. A HILL and D. WOOD, J. Mat. Sci. Mat. Med. 6 (1995) 311CrossRefGoogle Scholar
  6. 6.
    C. OHTSUKI, T. KOKUBO and T. YAMAMURO, J. Non-Cryst. Solids 143 (1992) 84CrossRefGoogle Scholar
  7. 7.
    K. OHURA, T. NAKAMURA, T. YAMAMURO, Y. EBISAWA, T. KOKUBO, Y. KOTOURA and M. OKA, J. Mat. Sci. Mat. Med. 3 (1992) 95CrossRefGoogle Scholar
  8. 8.
    C. A. MILLER, T. KOKUBO, I. M. REANEY, P. V. HATTON and P. F. JAMES, J. Biomed. Mat. Res. 59 (2002) 473CrossRefGoogle Scholar
  9. 9.
    S. BANDYOPADHYAY-GHOSH, I. M. REANEY, K. HURRELL-GILLINGHAM, I. M. BROOK and P. V. HATTON, Key Engg. Mat. 284–286 (2005) 557CrossRefGoogle Scholar
  10. 10.
    G. H. BEALL, J. Non-Cryst. Solids 129 (1991) 163CrossRefGoogle Scholar
  11. 11.
    A. JOHNSON, R. VAN NOORT, P. V. HATTON and J. M. WALSH, Dent. Mat. 19 (2003) 218CrossRefGoogle Scholar
  12. 12.
    J. M. WALSH, R. HILL, A. JOHNSON and P. V. HATTON, Mater. Med. Eng. Euromat 2 (2000) 65CrossRefGoogle Scholar
  13. 13.
    J. M. WALSH, PhD Thesis, University of Sheffield (2001)Google Scholar
  14. 14.
    A. J. DEVLIN, P. V. HATTON and I. M. BROOK, J. Mat. Sci. Mat. Med. 9 (1998) 737CrossRefGoogle Scholar
  15. 15.
    K. E. WALLACE, R. G. HILL, J. T. PEMBROKE, C. J. BROWN and P. V. HATTON, J. Mat. Sci. Mat. Med. 10 (1999) 697CrossRefGoogle Scholar
  16. 16.
    A. CLIFFORD and R. HILL, J. Non-Cryst. Solids 196 (1996) 346CrossRefGoogle Scholar
  17. 17.
    Z. STRNAD, Biomaterials, 13 (1992) 317CrossRefGoogle Scholar
  18. 18.
    R. HILL, J. Mat. Sci. 15 (1996) 1122Google Scholar
  19. 19.
    C. A. MILLER, I. M. REANEY, P. V. HATTON and P. F. JAMES, Chem. Mat. 16 (2004) 5736CrossRefGoogle Scholar
  20. 20.
    N. KANCHANARAT, C. A. MILLER, P. V. HATTON, P. F. JAMES and I. M. REANEY, J. Am. Ceram. Soc. 88 (2005) 11, 3198Google Scholar
  21. 21.
    S. BANDYOPADHYAY-GHOSH, I. M. REANEY, I. M. BROOK, K. HURRELL-GILLINGHAM, A. JOHNSON and P. V. HATTON, J. Biomed. Mat. Res. 80A(1) (2007) 175CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Sanchita Bandyopadhyay-Ghosh
    • 1
  • Ian M. Reaney
    • 1
  • Antony Johnson
    • 2
  • Kathryn Hurrell-Gillingham
    • 2
  • Ian M. Brook
    • 2
  • P. V. Hatton
    • 2
  1. 1.Department of Engineering Materials University of SheffieldSheffieldUK
  2. 2.Centre for Biomaterials and Tissue Engineering, School of Clinical Dentistry, Claremont CrescentUniversity of SheffieldSheffieldUK

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