The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study
K Lekha, H Dharanendra Kumar
Citation Information :
Lekha K, Kumar HD. The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study. Int J Prosthodont Restor Dent 2015; 5 (3):81-85.
Evaluate the effect of outdoor weathering on color stability of silicone and heat-cure acrylic with two different pigments.
Materials and methods
Total of 80 circular disk specimens, 40 silicone elastomer and 40 heat-cure clear acrylic resin were fabricated in the prepared mold and two dry earth pigments burnt sienna and cobalt blue was added to the specimens and it was subjected to simulated outdoor weathering. Before and after weathering, CIE values of both control and weathering groups were recorded by using spectrophotometer and tabulated. The obtained data were subjected to statistical analysis.
Results
Silicone elastomer with burnt sienna showed more color change when exposed to weathering followed by silicone with cobalt blue. Heat-cure with cobalt blue had shown some color change, heat-cure and burnt sienna were the most color stable.
Conclusion
From the study, it can be concluded that heat-cure acrylic resin with burnt sienna most color stable than silicone elastomer.
How to cite this article
Lekha K, Kumar HD, Meshramkar R, Nadiger RK. The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study. Int J Prosthodont Restor Dent 2015;5(3):81-85.
Clinical overview of materials for extraoral maxillofacial prosthetics. Materials research in maxillofacial prosthetics. In: Setcos JC, editor. Transactions of the Academy of Dental Materials 1992;5:9-20.
Effects of environmental factors on maxillofacial elastomers: Part I- literature review. J Prosthet Dent 1992;68(2):327-330.
Effects of environmental factors on maxillofacial elastomers: Part II- report of survey. J Prosthet Dent 1992;68(3):519-522.
Effects of environmental factors on maxillofacial elastomers: Part III- physical properties. J Prosthet Dent 1992;68(4):644-651.
Effects of environmental factors on maxillofacial elastomers: Part W- optical properties. J Prosthet Dent 1992;68(5):820-823.
Color stability of facial silicone prosthetics polymers after outdoor weathering. J Prosthet Dent 1999;82(4): 447-450.
Color changes in dry- pigmented maxillofacial elastomer resulting from ultraviolet light exposure. J Prosthet Dent 1995;74(5):493-498.
Evaluation of facial prosthesis for head and neck cancer patients. J Prosthet Dent 1981;46:538-544.
Pigments and their application in maxillofacial elastomers: a literature review. J Prosthet Dent 1998;80(2):204-208.
Changes in appearance of silicone elastomers for maxillofacial prostheses as a result of aging. Int J Prosthodont 1999:12(6):498-504.
Visual and instrumental colori- metric assessments of small color differences on translucent dental porcelain. J Dent Res 1989;68(12):1760-1764.
An experiment in visual scaling of small color differences. Color Res Appl 1979;4(2):83-91.
Color stability: Denture base resins processed with the microwave method. J Prosthet Dent 1996;76(6):581-589.
‘Accelerated color change in a maxillofacial elastomer with and without pigmentation. J Prosthet Dent 2001;85(6):614-620.
