The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 12 , ISSUE 4 ( July-August, 2011 ) > List of Articles

RESEARCH ARTICLE

The Effect of Fiber Reinforcement on the Dimensional Changes of Poly Methyl Methacrylate Resin after Processing and after Immersion in Water: An in vitro Study

Sathish Abraham, LM Ranganath, Ravindra Ganguly Keshav Shet, AG Rajesh

Citation Information : Abraham S, Ranganath L, Shet RG, Rajesh A. The Effect of Fiber Reinforcement on the Dimensional Changes of Poly Methyl Methacrylate Resin after Processing and after Immersion in Water: An in vitro Study. J Contemp Dent Pract 2011; 12 (4):305-317.

DOI: 10.5005/jp-journals-10024-1051

Published Online: 01-08-2011

Copyright Statement:  Copyright © 2011; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aims and objectives

To evaluate and compare the effect of fiber reinforcement on the dimensional changes of heat-cured poly (methyl methacrylate) resin after processing and immersion in water.

Materials and methods

Three different heat-cure resins were selected for the present study: (1) Nonreinforced heat-cure methyl methacrylate resin, (2) High Impact heat-cured methyl methacrylate resin and (3) Fiberglass reinforced methyl methacrylate resin. Ninety samples were prepared using three different resins and denture bases obtained for the same. The amount of space between the tissue surface and the cast in the anterior, middle and posterior regions is measured after processing and immersion in water for 17 days using a traveling microscope having a least count of 0.001 cm.

Results

Mean and standard deviation were calculated for the dimensional changes and were subjected to statistical analysis (Student t-test, unpaired). Among the three groups of resins, fiber reinforced heat-cured methyl methacrylate resin was found to be statistically highly significant in terms of dimensional changes when compared with the nonreinforced and high impact heat-cured resins.

Conclusion

Dimensional changes were evident in all the planes in the three groups studied and were in the following decreasing order—fiberglass reinforced heat-cured poly (methyl methacrylate) resin, high impact heat-cured poly (methyl methacrylate) resin and nonreinforced heat-cured poly (methyl methacrylate) resin.

Clinical significance

The fibers are added in order to increase the strength of acrylic resin. Considering only the strength may in turn affect the dimensional accuracy of the acrylic resin resulting in loss of retention and stability, affecting the fit of the denture.

How to cite this article

Ranganath LM, Shet RGK, AG Rajesh, Abraham S. The Effect of Fiber Reinforcement on the Dimensional Changes of Poly Methyl Methacrylate Resin after Processing and after Immersion in Water: An in vitro Study. J Contemp Dent Pract 2011;12(4):305-317.


PDF Share
  1. Effect of water and artificial saliva on mechanical properties of some denture-base materials. Dent Mater 1989;5:399-402.
  2. Dimensional stability of injection and conventional processing of denture base acrylic resin. J Prosthet Dent 1988;60(3):394-98.
  3. Evaluating dimensional accuracy of denture bases with a modified comparator. J Prosthet Dent 1959;9(4):683-92.
  4. Dimensional accuracy of various denture base materials. J Prosthet Dent 1962;12(1):67-81.
  5. Dimensional and occlusal changes in fluid resin dentures. J Prosthet Dent 1978;39(6):605-15.
  6. Phillips’ science of dental materials (10th ed), WB Saunders Company, USA 1996;237-72.
  7. The effects of denture teeth on the dimensional accuracy of acrylic resin denture bases. Int J Prosthodont 1990;3:528-37.
  8. The comparison of denturebase processing techniques. Part II. Dimensional change due to processing. J Prosthet Dent 1977;37(4):450-59.
  9. The absorption of water by acrylic resins and other materials. J Prosthet Dent 1964;14(2):307-16.
  10. Effect of denture thickness and curing cycle on the dimensional stability of acrylic resin denture bases. Dent Mater 1988;4:20-24.
  11. Properties of various types of denture-base plastics. J Prosthet Dent 1962;12(4):711-18.
  12. Dental-materials properties and manipulation (4th ed), CV Mosby Co, St Louis, USA 1990;272-296.
  13. A new method of measuring dimensional change. J Prosthet Dent 1991;65(5):718-22.
  14. Measuring procedure for the determination of the three-dimensional shape of dentures. J Prosthet Dent 1979;42(2):149-53.
  15. Linear dimensional variability of three denture base resins after processing and in water storage, J Prosthet Dent 1992;68(1):196-200.
  16. Posterior peripheral seal distortional related to processing temperature. J Prosthet Dent 1981;45(6):598-601.
  17. Moire topography for measuring the dimensional accuracy of resin complete denture bases. Int J Prosthodont 1989;2:272-79.
  18. Evaluation of dimensional change in complete denture processed by injection-pressing and the pack- and-press technique. J Prosthet Dent 1983;50(6):757-61.
  19. Posterior peripheral seal distortion related to height of the maxillary-ridge. J Prosthet Dent 1980;43(5):508-10.
  20. Comparison between dimensional accuracy of denture produced with pour-type resin and with heat processed materials. J Prosthet Dent 1971;26(3):296-301.
  21. J Prosthet Dent 1978;39(4):375-77.
  22. Dimensional change at the posterior border of baseplates made from a visible light-activated composite resin. J Prosthet Dent 1989;62(2):184-89.
  23. Comparison of some properties of denture base acrylic resins polymerized by dry and wet curing systems. Quint Dent Tech 1996;11(4):265-69.
  24. Dimensional accuracy and stability of acrylic resin denture bases. J Prosthet Dent 1999;68(4):634-40.
  25. The dimensional accuracy of two denture base processing methods. Int J Prosthodont 2008;2:421-28.
  26. Flexure fatigue of 10 commonly used denture base resins. J Prosthet Dent 2010;46(5):478-83.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.