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Evaluation of the Effect of 2 Flask Investment Materials on Color Stability of 5 Brands of Denture Teeth
- Source :
- Journal of Dental Materials and Techniques, Vol 3, Iss 4, Pp 144-150 (2014)
- Publication Year :
- 2014
- Publisher :
- Mashhad University of Medical Sciences, 2014.
-
Abstract
- Introduction: The purpose of this study was to investigate the effect of flask investment materials on the color changes of different brands of resin denture teeth. Methods: Resin denture teeth (560) were divided into 2 groups according to the materials used for flask investment (silicone or gypsum). All the specimens were thermocycled between 4°C and 60°C with 60-s dwell times for 1,000 cycles. Subsequently, the specimens of each group were divided into 4 subgroups based on the immersion media: coffee, tea, cola, and distilled water. Digital images of the teeth were taken before immersion and 30 days after immersion. The color samples were measured using the CIE L*a*b* system, and color differences (∆E) were calculated. The data were evaluated by three ways ANOVA and the Tukey HSD test. Results: There was not a significant difference in ∆E using three-way ANOVA, while the results showed considerable statistical differences with two factor ANOVA interaction. The ∆E values in the silicone group were significantly more than those in the gypsum group (P
- Subjects :
- Color stability
resin denture teeth
silicone and gypsum
Dentistry
RK1-715
Subjects
Details
- Language :
- English
- ISSN :
- 23224150 and 22520317
- Volume :
- 3
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Dental Materials and Techniques
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8d1ca8a5f5cc4b5dbfb8212b1e771f55
- Document Type :
- article