Biomedical Engineering

, Volume 5, Issue 5, pp 290–293 | Cite as

Aging of certain polymers and ways of increasing their deformation resistance

  • M. Z. Shteingart
  • P. V. Melent'ev
  • L. N. Petrova
  • E. N. Petrov
Investigations, Design, And Technology
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Conclusions

1. Aging of the material of artificial dentures was investigated at room temperature, with immersion of the specimens in artificial saliva, and also in a medium under a load up to 50 kgf/cm2.

2. It was shown that natural aging of the material in air and with its immersion into a liquid simulating saliva has practically no effect on the deformation properties of the material.

3. When the material is kept under a constant compressive load simulating jaw pressure, its deformational properties change.

4. The addition of 10% PDI-4A to PMMA more than doubles the deformation resistance of the material.

Keywords

Polymer PMMA Compressive Load Natural Aging Property Change 

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Literature cited

  1. 1.
    L. M. Perzashkevich, N. I. Kolegov, and V. N. Yakovenko, Transactions of the First All-Russian Congress of Stomatologists [in Russian], Moscow (1964), p. 29.Google Scholar
  2. 2.
    L. Ya. Rappoport, R. N. Petrova, E. M. Blyakhman, et al., Current State and Prospects of the Production of Epoxy Resins and Materials on Their Base [in Russian], Leningrad (1969).Google Scholar
  3. 3.
    P. V. Melent'ev, Approximate Calculations [in Russian], Moscow-Leningrad (1962).Google Scholar

Copyright information

© Consultants Bureau, a division of Plenum Publishing Corporation 1972

Authors and Affiliations

  • M. Z. Shteingart
  • P. V. Melent'ev
  • L. N. Petrova
  • E. N. Petrov

There are no affiliations available

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