Color Stability of Provisional Restorative Materials - A Tabular Review (original) (raw)
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Color stability of dental temporary composite materials assessed in vitro
Dental Forum, 2016
Aim of the study. The purpose of this study was to evaluate color stability of temporary prosthetic materials to staining drinks, including tea, coffee and blackcurrant juice, and distilled water. Material and methods. Color was assessed using a reflection spectrophotometer according to the CIELAB color scale, using two illuminants: D65 (daylight) and A (incandescent bulb). Results. Luxatemp, Dentalon plus, Structur 2 SC, Protemp II, and Zhermacryl STC exhibited poor color stability, becoming generally darker (ΔL < 0) and yellowier (Δb* > 0), with Luxatemp and Dentalon plus being less prone to discoloration than the others. Conclusions. Temporary prosthetic materials may suffer strong discoloration (ΔE > 6.0) upon prolonged exposure to potentially staining beverages, and some of them even upon soaking in distilled water.
Color Appearance of Various Provisional Restorative Materials for Rehabilitation Upon Aging
European Journal of Dentistry, 2023
Objectives Color stability of provisional restoration is crucial for full mouth reconstruction, which is probably influenced by aging. Therefore, this study evaluated the effect of aging on the color appearance of different provisional materials. Materials and Methods Rectangular specimens (10  10  2 mm) were fabricated from computer-aided design-computer-aided manufacturing (CAD-CAM) (Vita CAD-Temp [VC], TelioCAD [TC], artBloc [RC]), autopolymerized (ProtempIV [PA], Luxatemp [LA], UnifastTrad [UA]), and heat-polymerized polymer (Major C&B [MH]). Each was divided into aging (AG, 5,000 thermocycles of 5°/55°C) and non-aging group (n ¼ 21/group). Color parameters were determined using a spectrophotometer through the CIELAB system. The L à , a à , and b à data were calculated for color appearance (ΔE), translucency parameter (TP), contrast ratio (CR), and opalescence parameter (OP) for each. Statistical Analysis An analysis of variance and multiple comparisons were determined for a significant difference in color appearance alteration of materials upon aging (α ¼ 0.05). Results Statistically significant differences of L à , a à , b à , ΔE, TP, CR, and OP due to the effect of types of material (p < 0.05), aging effect (p < 0.05), and their interactions (p < 0.05) were indicated. Aging affects the color appearance, lightness, chromaticity, translucency, contrast, and opalescence of various types of provisional materials. Color appearance alteration of provisional materials was significantly indicated upon aging (p < 0.05) but within the perceivable limit of clinical acceptance (ΔE diff < 3.0), except for PA and MH. Color stability of CAD-CAM-based poly-methyl methacrylate (PMMA) and autopolymerized PMMA upon aging were better than bis-acryl resin and heatpolymerized PMMA. The TP, CR, and OP alterations of tested materials upon aging were within the perceivable limit. Conclusion Color appearance of provisional restorative materials was influenced by aging. The CAD-CAM-based PMMA and autopolymerized PMMA materials showed better color stability than bis-acryl provisional resin and heat-polymerized PMMA upon aging. Therefore, they were suggested as provisional materials for oral rehabilitation.
The Journal of Indian Prosthodontic Society, 2013
The most important factor affecting esthetics is colour. Whether a definitive prosthesis or a provisional restoration, maintenance of esthetics is of prime concern along with restoration of function. Colour stability of provisional prosthesis is affected by various factors and various studies are documented in the literature on this. The purpose of this study was to evaluate the colour stability of provisional restorative materials exposed to different mouth rinses at varying time intervals. 120 discs, each of self cure tooth moulding material, Protemp 4 and Revotek LC were prepared and immersed in two mouth rinses, hexidine and periogard and evaluated for their colour stability after 1 week, 1 and 3 months. The data obtained was statistically analysed using ANOVA and Tukey's post hoc analysis. The results indicate that there is a significant difference in the colour variation of various materials in two different mouth rinses at different time intervals. Revotek LC was found to be the most colour stable material and periogard had the least staining potential at varying time intervals.
Dental Materials Corresponding author
2006
Color stability evaluation of aesthetic restorative materials Abstract: Color match is one of the most important characteristics of aesthetic restorative materials. Maintenance of color throughout the functional lifetime of restorations is important for the durability of treat-ment. This characteristic is not constant among dental materials. The purpose of this research was to assess the color stability of five aesthetic restorative materials when immersed in a coffee solution. Seventy-one 17 mm x 1 mm specimens, divided into five groups, were made using one direct composite resin (Tetric Ceram, Ivoclar/Vivadent – G1), three in-direct composite resins (Targis, Ivoclar/Vivadent – G2; Resilab Master, Wilcos – G3; belleGlass HP, Kerr – G4) and one porcelain (IPS Em-press 2, Ivoclar/Vivadent – G5). The specimens were immersed in a cof-fee staining media for 15 days and stored under a controlled temperature of 37°C ± 1°C in the dark. The evaluations were made after 1, 7 and 15 days by me...
The Journal of Prosthetic Dentistry, 2009
The polymerization method did not affect the color stability of denture teeth. Although thermal cycling affects the color stability of all brands of acrylic resin denture teeth evaluated, the color differences were not clinically discernable. Statement of problem. Acrylic resin denture teeth are widely used due to the chemical bond to the acrylic resin of the denture base. However, discoloration of acrylic resin denture teeth can be a problem.
Journal of Applied Oral Science, 2012
D irect composite resin restorations have become a viable alternative for patients that require anterior restorative procedures to be integrated to the other teeth that compose the smile, especially for presenting satisfactory esthetic results and minimum wear of the dental structure. Technological evolution along with a better understanding of the behavior of dental tissues to light incidence has allowed the development of new composite resins with better mechanical and optical properties, making possible a more artistic approach for anterior restorations. The combination of the increasing demand of patients for esthetics and the capacity to preserve the dental structure resulted in the development of different incremental techniques for restoring fractured anterior teeth in a natural way. In order to achieve esthetic excellence, dentists should understand and apply artistic and scientific principles when choosing color of restorative materials, as well as during the insertion of the composite resin. The discussion of these strategies will be divided into two papers. In this paper, the criteria for color and material selection to obtain a natural reproduction of the lost dental structures and an imperceptible restoration will be addressed.
Effects Of Dentifrices On Discolouration Of Cad Cam Manufactured Temporary Restorative Materials
SciDoc Publishers, 2021
Color match is one of the most important characteristics of aesthetic restorative materials. Maintenance of color throughout the functional lifetime of restorations is important for the durability of treatment. This characteristic is not constant among dental materials. Restorative materials must maintain long-term color stability in order to avoid replacement of restorations. Color differences (ΔE) more than 3.3 units reflect clinically significant visual discoloration. The degree of discoloration of resins can be influenced by a number of factors such as incomplete polymerization, water sorption, chemical reactivity, diet, oral hygiene or surface roughness of the restoration. Discoloration can be due to extrinsic or intrinsic cause. The null hypothesis was that colour stability of tested materials were not affected by the dentifrices or toothbrushing simulation.
Color Stability of Ten Resin-Based Restorative Materials
Journal of Esthetic and Restorative Dentistry, 2012
Despite significant developments to improve the optical properties of composites, color stability remains a challenge with changes still observed immediately after polymerization and after some time of storage.
World Journal of Dentistry, 2021
Aim and objective: The current research aimed to appraise the color stability of two different tooth-colored restorative materials employed in primary teeth. Materials and methods: Ninety primary molar teeth that were extracted for various therapeutic reasons were included in the current study. Class V cavity preparation was done on the buccal surface of these 90 primary molar teeth. Depending on the type of restorative supply used, the molar teeth were randomly allocated to one of the two equivalent groups (n = 45) that is group I received nanocomposite resin while group II had resin-modified glass ionomer cement (RMGIC) restoration. Rehydration after cavity preparation was achieved by keeping the samples in distilled water for 1 day. Following rehydration, these samples were washed and dried up with filter paper, and the baseline color quantification was performed. After the same, the above group samples were immersed for 10 minutes each day in three dissimilar but routinely used children's beverages that are an aerated beverage, ice candy, chocolate milk, and Bournvita milk. The color disparity of each sample was quantified with a reflectance spectrophotometer. Results: Nanocomposite resin (4.28 ± 0.02 to 11.04 ± 0.18) portrayed less resistance to color variation in contrast to RMGIC (4.74 ± 0.53 to 8.12 ± 0.12) following immersion in the aerated beverage. Following dipping in the ice candy, nanocomposite resin (4.46 ± 0.61 to 9.98 ± 0.42) depicted higher shade change in comparison to RMGIC (4.89 ± 0.22 to 6.30 ± 0.09). Following the immersion in chocolate milk and Bournvita milk, RMGIC (4.60 ± 0.20 to 5.96 ± 0.29) found trivial color variation as judged against nanocomposite resin (4.96 ± 0.01 to 8.68 ± 0.16). Conclusion: The present study concluded that the color stability of the RMGIC group showed higher resistance to staining as compared to nanocomposite resin with all beverages used in this study. Clinical significance: Children drink and eat foods that are bright and colorful. These substances contain food additives that can blemish not only the natural teeth but also the restorations. As esthetics and appearance are of foremost significance for both parents and their children, the prolonged color steadiness of restorative supplies is of extreme significance.