Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-02T23:31:23.673Z Has data issue: false hasContentIssue false
  • English
  • Français

New Inorganic/Organic Copolymers (Ormocer®s) for Dental Applications

Published online by Cambridge University Press:  21 February 2011

Herbert Wolter ,
Werner Storch  and
Heidrun Ott
Herbert Wolter
Affiliation:
Fraunhofer-Institut für Silicatforschung, 97082 Würzburg, Germany
Werner Storch
Affiliation:
Fraunhofer-Institut für Silicatforschung, 97082 Würzburg, Germany
Heidrun Ott
Affiliation:
Blendax GmbH, 55120 Mainz, Germany.
Get access

Abstract

Urethane- and thioether (meth)acrylate alkoxysilanes have been used, as sol-gel precursors, for the preparation of a special family of inorganic/organic copolymers (ORMOCER®s). The basic silane type offers the following structural and synthetic possibilities for modifying the properties of the resulting copolymers: variation of the number of alkoxy groups, combination with other, different, sol-gel precursors, variation of the number of attached (meth)acrylate groups (1– 5), and variation within the molecular segment (kind, structure and length) connecting the inorganic with the organic polymer structure. To achieve the additional organic polymer structure in the cured copolymer the use of different radically induced polymerization approaches (UV-, visible light-, thermal-and redox induced) is possible. Taking the incorporation of fillers into account, the Young's modulus of these copolymers is adjustable in a range of 1–17000 MPa, and the thermal expansion coefficient in a range of 17–250·10-6·K-1 (5 - 50 °C). Other advantages are the low shrinkage (1 - 2,8 vol.-%), the high flexural strength (up to 160 MPa), and the high abrasion resistance. This new copolymer type seems to have significant potential for medical applications, especially as dental filling material to replace the currently used controversial amalgam fillings.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 143
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 Watts, D. C.; Dental restorative materials in material science and technology, VCH, New York, Vol. 14 (1992) 209–258.Google Scholar
2 Anusavice, K. J., Söderholm, K. J. and Groann, D. G.; Implications of amalgam and ceramic degradation in the oral environment; MRS Bulletin (1993) 64–72.Google Scholar
3 Wolter, H., Glaubitt, W. and Rose, K.; Multifunctional (meth)acrylate alkoxysilanes -A new type of reactive compounds; Mat. Res. Soc. Symp. Proc. 271 (1992) 719–724.Google Scholar
4 Wolter, H. and Storch, W.; Urethane (meth)acrylate alkoxysilanes, a new type of reactive compounds for the preparation of inorganic-organic copolymers (ORMOCER®s), Polymer&Materials Research Symposium, Bayreuth 1993, 14–17.Google Scholar