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
Related Articles
- EP ID EP471860
- DOI 10.5866/2018.10.10021
- Views 80
- Downloads 0
Molar Palatal Attachment - A Novel Appliance for Crossbite Correction
Crossbite is an abnormal relation of one or more teeth of one arch to the opposing tooth or teeth of the other arch, in buccolingual direction in centric occlusion caused by deviation of tooth/teeth position or abnormal...
Prosthetic rehabilitation of a 7 year old child with Hypohidrotic Ectodermal Dysplasia
Hypohidrotic ectodermal dysplasia is an uncommon disorder of tissues derived from ectoderm, characterized by the triad of hypohidrosis and hypodontia, which form the essential features of the syndrome 1. A case of a 7 y...
Nickel Allergy In Orthodontics
Nickel is a common component in many orthodontic materials. An allergy to nickel is commonly seen in the population, more frequently in women. This allergy has increased with the more frequent use of nickel containing je...
Management of Dentoalveolar Trauma - 1½ Year Follow Up: A Case Report
Dentoalveolar trauma should be understood and managed appropriately during mixed dentition period because of the potential complications related to tooth eruption, occlusion, alveolar development and facial growth. The t...
Restoration of discoloured teeth with ceramic laminate veneers
Thin shells of ceramics known as porcelain laminate veneers can be bonded to facial surface of anterior teeth with best esthetic results. When bonded to enamel they take up the strength of enamel and become as strong as...