Effect of Repeated Firings on the Color of Porcelain: An In Vitro Study
Journal Title: Indian Journal of Dental Advancements - Year 2018, Vol 10, Issue 1
Abstract
Context: Dental ceramics are one of the widely used esthetic restorative materials and these are attractive because of their biocompatibility and long-term color stability. Duplicating the appearance of tooth structure is a complex process that requires careful control of the form, surface texture, translucency, and color of the restoration. Repeated firings of dental porcelain may change porcelain shades. Aims and Objectives: The aim of this study was to evaluate and compare the effect of multiple firings on metal ceramics before and after glazing. Materials and Methods: A total of 70 base metal alloy disks with a thickness of 0.5 mm were made. Then, oxidation, opaque porcelain application, and firing, followed by dentin porcelain is applied to all specimens and subjected to first and second dentin firings. They were subdivided into seven groups (n = 10). The first group is the control group and other groups were subjected to repeated second dentin firings for 3, 4, 5, 6, 7, and 8 dentin firings and analyzed for color with spectrophotometer. All the specimens were glazed and again analyzed for color. Results: The color difference was observed at fifth dentin firing before glazing and at eighth dentin firings after glazing compared to control group. Conclusion: Color and microhardness are noticeably affected by repeated firings.
Authors and Affiliations
Swapna B, Shalini K, Sreeramulu B
Keywords
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- EP ID EP471860
- DOI 10.5866/2018.10.10021
- Views 74
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