Colour Stability of Heat and Cold Cure Acrylic Resins
| Autor: | Bohra Pk, Ganesh Pr, Ebenezar Av, Reddy Mm, Sivakumar G |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
spectrophotometer
genetic structures business.industry Food Colorants Clinical Biochemistry lcsh:R lcsh:Medicine General Medicine colorants Erythrosine Dentistry Section self cure acrylic resins chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Denture base Medicine Sunset yellow business Acrylic resin calorimetry heat cure acrylic resins Nuclear chemistry |
| Zdroj: | Journal of Clinical and Diagnostic Research, Vol 9, Iss 1, Pp ZC12-ZC15 (2015) |
| Popis: | Introduction: To evaluate the colour stability of heat and cold cure acrylic resins under simulated oral conditions with different colorants. Materials and Methods: Three different brands of heat cure acrylic resin and two rapid cure auto polymerizing acrylic resin of commercial products such as Trevelon Heat Cure (THC), DPI Heat cure (DHC), Pyrax Heat Cure (PHC), DPI Cold cure (DCC) and Acralyn-R-Cold cure (ACC) have been evaluated for discoloration and colour variation on subjecting it to three different, commonly employed food colorants such as Erythrosine, Tartarizine and Sunset yellow. In order to simulate the oral condition the food colorants were diluted with artificial saliva to the samples taken up for the study. These were further kept in an incubator at 37°C ± 1°C. The UV-visible spectrophotometer has been utilized to evaluate the study on the basis of CIE L* a* b* system. The prepared samples for standard evaluation have been grouped as control group, which has been tested with a white as standard, which is applicable for testing the colour variants. Results: The least colour changes was found to be with Sunset Yellow showing AE* value of 3.55 with heat cure acrylic resin branded as PHC material and the highest colour absorption with Tartarizine showing AE* value of 12.43 in rapid cure autopolymerzing acrylic resin material branded as ACC material. Conclusion: ACC which is a self cure acrylic resin shows a higher colour variation to the tartarizine food coloration. There were not much of discoloration values shown on the denture base resins as the food colorants are of organic azodyes. |
| Databáze: | OpenAIRE |
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