Color difference between the vita classical shade guide and composite veneers using the dual-layer technique

Floriani, F.; Brandfon, B.; Sawczuk, NJ.; Lopes, G.; Rocha, Mateus Garcia; Oliveira, Dayane Carvalho Ramos Salles de

doi:10.4317/jced.59759

Cited by 5 publications

(10 citation statements)

References 21 publications

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“…There is no direct indication in the application brochure of this device for its use in color measurement of resin‐based materials. However, when other studies in the literature investigating the color changes of resin‐based restorative materials were examined, it was seen that the measurements were made with the VITA Easyshade V (Floriani et al, 2022; Hong et al, 2022; Karakaya & Cengiz, 2017; Savic‐Stankovic et al, 2021). This device was preferred in our study to ensure that the results of our study were comparable.…”

Section: Methodsmentioning

confidence: 99%

Changes in physical properties of universal composites andCAD/CAMmaterials after bleaching and antioxidant applications: Scanning electron microscope and atomic force microscope evaluation

Tuysuz,

Gurses

2024

Microscopy Res & Technique

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To evaluate the effects of vital bleaching agents and the subsequent application of ascorbic acid (AA) to universal composites and resin‐based CAD/CAM blocks on the physical properties of materials. In the study; G‐enial A'chord (GCA), Filtek Ultimate (FU), Clearfil Majesty (CM) composites, and LAVA Ultimate (LU), Cerasmart (GCC) CAD/CAM blocks were used. The materials were divided into two subgroups based on the applied bleaching type (n = 30/group): office bleaching (OB) and home bleaching (HB). After bleaching, AA was applied to the samples. Surface roughness, microhardness, and color change values of all samples were measured at three stages: initial (I), post‐bleaching (B), and post‐bleaching+AA application (BA). Statistical analysis was performed using 3‐way Mixed ANOVA with Bonferroni correction (p < .05). The BA of the HB group of CM; the B of the HB group of LU; the B roughness values of both the OB and HB groups of GCC were significantly lower than I. The microhardness values of all the materials examined decreased significantly after both bleaching (p < .05). With regard to the AA application, it significantly decreased Ra values in the HB group of CM. In addition, it significantly increased the microhardness values in the HB groups of CM and GCC. Also, the ΔE001 and ΔE002 values for the FU and GCC HB groups were significantly higher than in the OB groups (p < .05). Bleaching and AA application affected the physical properties of the materials. The physical properties of the materials either remained unchanged or improved with the application of AA after bleaching.Research Highlights This article presents in vitro results of a new approach that has not been studied before. Ascorbic acid, used to increase the bond strength between the material‐tooth after bleaching, was used to eliminate the adverse effects of bleaching on the physical properties of aesthetic restorative materials. Additionally, the effects of all procedures on the materials were examined using scanning electron microscopy (SEM) and atomic force microscopy (AFM). As a result of the study, it was concluded that the application of ascorbic acid after bleaching improved the physical properties of some of the materials.

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Section: Methodsmentioning

confidence: 99%

Changes in physical properties of universal composites andCAD/CAMmaterials after bleaching and antioxidant applications: Scanning electron microscope and atomic force microscope evaluation

Tuysuz,

Gurses

2024

Microscopy Res & Technique

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“…The most commonly used shade guide nomenclature is based on Vita classical A1‐ D4 shade guide (VITA Zahnfabrik, Bad Säckingen, Germany) It has four groups, and the higher the number (e.g., A1, A2, A3) the darker and more chromatic the shade. Composite shade designations frequently include additional information, based on the recommended usage (e.g., B1 enamel, D2 enamel) 7 . Chromatic enamels, like dentin, tend to maintain the pre‐operative value of the tooth.…”

Section: Introductionmentioning

confidence: 99%

“…Composite shade designations frequently include additional information, based on the recommended usage (e.g., B1 enamel, D2 enamel). 7 Chromatic enamels, like dentin, tend to maintain the pre-operative value of the tooth. The second group of enamel composites are these not related to Vita classical A1-D4 nomenclature, with names of enamel shades like milky white, incisal light, or clear occlusal.…”

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confidence: 99%

A system for reliable composite shade matching: Custom shade tabs and an intra‐oral mockup

Notarantonio

Seay

2023

J Esthet Restor Dent

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Objective This article introduced a systematic approach to matching composite and tooth shades to create esthetic restorations that visually integrate seamlessly with the patient's tooth and surrounding dentition. A basic explanation of color science was presented to aid the clinician in adopting this systematic approach to color matching. To demonstrate the need for custom shade guides, an objective analysis of composites from different companies was performed by recording the color coordinate values of multiple composites and then calculating CIEDE2000 color differences. Different locations on the tooth were analyzed using the same identified shade from different companies, as well as using the same composite shade applied in different thicknesses. A case report documented the clinical application of these shade matching techniques. Clinical Considerations Shade matching, particularly in the anterior esthetic region, can be challenging, which can result in patient dissatisfaction with the esthetic result. Stock shade tabs are not a reliable indicator of actual composite shades. Conclusions The most predictable esthetic results were achieved by using custom shade guides as an entry point, followed by a direct composite color mockup intraorally. Clinical Significance To consistently meet the esthetic demands of today's patients, dentists need reliable tools when selecting a composite shade for restorations. Composites with the same shade designation vary in color and shade designation cannot be relied upon for accurate shade selection. The use of custom shade guides and an intra‐oral mockup can enhance the esthetic outcome.

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“…The large majority of the composite manufacturers do not supply any CSG, but instead rely on using the Vita (classical) shade guide as a standard for instilling various shades within the commercial product [ 20 ]. The communication between the manufacturers and the clinicians for composite shades is dependent upon trust in the Vita ceramic guide system, despite the fact that Vita shade guides are made of dental porcelain with different optical properties than composite.…”

Section: Introductionmentioning

confidence: 99%

“…The Vita classical shade guide was introduced in the year 1927 (Vita Zahnfabrik in Bad Sackingen, Germany) and continues to be the most globally accepted and used shade guide, mainly because of its reliability to match natural tooth colors and their varied shades [ 7 , 9 ]. Clinical determination of color/shade selection has been traditionally visual, which although being subjective in nature has been considered precise, especially with experienced clinicians [ 20 ]. A major concern with composite manufacturers has been the lack of a standard resin composite shade nomenclature in the literature [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Composite Resin (Duo-Shade) Shade Guide with Vita Ceramic Shades Before and After Chemical and Autoclave Sterilization

Gupta,

Sayed,

Gupta

et al. 2023

Med Sci Monit

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Background This study aimed to compare a composite resin (Duo-Shade) shade guide with Vita ceramic shades before/after chemical and autoclave sterilization. Material/Methods Color values (L*a*b*) were recorded directly from shade tabs of prefabricated composite resin (Brilliant NG Universal Duo-Shade) and ceramic (Vita classic) shade guide with a calibrated spectrophotometer (Vita Easy Shade Advance 4.0). Seventy-two composite resin disk samples with 6 different shades (A1/B1, A2/B2, A3/D3, A3.5/B3, A4/C4, and C2/C3) (n=12 each) were divided into 2 groups (Gp) – Gp A (Autoclave) and Gp C (Chemical) (15 cycles) – to assess their influence on respective shades. Mean values calculated the color differences (ΔE) while differences in color values (L*a*b*) were graded on the National Bureau of Standards (NBS) 6-grade scale and assessed for Clinical Acceptance/Perceptible Threshold (CAT), (CPT). All differences were considered significant if the color difference ΔE was ≥3.3. Results Only 2 out of 12 Shade tabs (C2C3, A4C4) of composite resin matched to Vita shade tab C2 and C4 (ΔE ≤3.3). Both groups showed notable color differences after respective sterilization protocols, with color differences in Gp A significantly higher than Gp C (ΔE ≥3.3). Within groups, all shades in Gp A showed remarkably different color changes, with shade C2C3 and A1B1 being denoted as clinically unacceptable. Conclusions Manufacturer-provided shade guides do not match ceramic shades as claimed and chemical sterilization using 10% Deconex was associated with less color changes than with autoclave sterilization.

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Color difference between the vita classical shade guide and composite veneers using the dual-layer technique

Cited by 5 publications

References 21 publications

Changes in physical properties of universal composites andCAD/CAMmaterials after bleaching and antioxidant applications: Scanning electron microscope and atomic force microscope evaluation

Changes in physical properties of universal composites andCAD/CAMmaterials after bleaching and antioxidant applications: Scanning electron microscope and atomic force microscope evaluation

A system for reliable composite shade matching: Custom shade tabs and an intra‐oral mockup

Comparison of Composite Resin (Duo-Shade) Shade Guide with Vita Ceramic Shades Before and After Chemical and Autoclave Sterilization

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