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Water sorption and diffusion coefficient through an experimental dental resin.
A M Costella1, J L Trochmann, W S Oliveira
1School of Chemical Engineering, State University of Campinas, UNICAMP, Campinas, SP, Brazil. costella@feq.unicamp.br
Journal of Materials Science. Materials in Medicine
|August 21, 2009
Summary
Researchers studied water absorption in dental resin composites to improve restorative materials. The study found a diffusion coefficient of 6.38 x 10(-8) cm(2)/s, suitable for dental applications.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Dental Materials
Background:
- Polymeric composites are crucial dental restorative materials.
- Understanding their behavior in the oral environment is key to enhancing performance.
- Water absorption significantly impacts the longevity and properties of dental resins.
Purpose of the Study:
- To quantify water absorption in a novel dental resin blend.
- To determine the diffusion coefficient of water within the resin composite.
- To assess the suitability of the resin for dental restorative applications.
Main Methods:
- Experimental dental resin blends were prepared using Bisphenol A glycol dimethacrylate, Bisphenol A ethoxylated dimethacrylate, and Triethylene glycol dimethacrylate monomers.
- Specimen discs of varying thicknesses were subjected to water sorption testing.
- The water sorption test followed the International Standard ISO 4049 guidelines for polymer-based filling materials.
Main Results:
- The diffusion coefficient for water absorption was calculated to be approximately 6.38 x 10(-8) cm(2)/s.
- The experimental variance was remarkably low, at 0.01%.
- The obtained diffusion coefficient aligns well with established literature values for dental resins.
Conclusions:
- The calculated diffusion coefficient indicates a high degree of suitability for the tested dental resin composite in restorative applications.
- The findings contribute fundamental knowledge to the behavior of polymeric dental materials.
- This research supports the development of improved and durable dental restorative solutions.
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