Colour Stability of Heat and Cold Cure Acrylic Resins
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 a...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Private Limited
2015-01-01
|
| Series: | Journal of Clinical and Diagnostic Research |
| Subjects: | |
| Online Access: | https://jcdr.net/articles/PDF/5400/11620_CE(Ra)_F(Sh)_PF1(NJAK)_PFA(AK)_PF2(PAG).pdf |
| Summary: | 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. |
|---|---|
| ISSN: | 2249-782X 0973-709X |