Effects of adhesive used as modeling liquid on the stability of the color and opacity of composites

Araújo, Fernanda Santos; Barros, Mellany Cristie Ramos; Santana, Márcia Luciana Carregosa; Oliveira, Ludmila Smith de Jesus; Silva, Paula Fernanda Damasceno; Lima, Giana da Silveira; Faria-e-Silva, André Luís

doi:10.1111/jerd.12378

Cited by 26 publications

(49 citation statements)

References 26 publications

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“…WI D , which is based on CIELAB color coordinates, was designed exclusively for dentistry and presented better correlation to visual perception of tooth whiteness, when it was compared with other indexes . Although this index has been recently published, it has already been cited in some studies, but it has not been used to compare bleaching treatments.…”

Section: Discussionmentioning

confidence: 99%

Effect of hydrogen peroxide on color and whiteness of resin‐based composites

Pecho

Martos

Pinto

et al. 2018

J Esthet Restor Dent

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Objective: To evaluate the influence of a 35% hydrogen peroxide gel on color and whiteness changes of resin-based composites (RBC).Materials and Methods: Discs (n = 10; shade A3.5 enamel; and 8 mm diameter and 2 mm thick) were fabricated from three RBC (DF-Durafill, Heraeus Kulzer; ED-IPS Empress Direct, Ivoclar Vivadent; and AP-Amelogen Plus, Ultradent Products). Three subgroups were obtained for each RBC: before bleaching (T 0 ) and after first (T 1 ) and second (T 2 ) bleaching applications. A dental spectrophotometer (VITA Easyshade, Vita Zahnfabrik) was used to obtain CIELAB color coordinates and whiteness index for dentistry (WI D ) in all periods. CIELAB (ΔE * ab ) and CIEDE2000 (ΔE 00 ) color differences were also obtained. Perceptibility (PT) and acceptability (AT) thresholds were used to analyze values of ΔE * ab , ΔE 00 , and ΔWI D . Two-way analysis of variance (ANOVA; for L*, a*, b*, and WI D ) and one-way ANOVA and Tukey tests (for ΔE * ab and ΔE 00 ) were used to analyzed the results (α = 0.05).Results: L* and WI D values from all RBC did not change after bleaching applications (T 1 and T 2 ) (P > .05). There were no significant differences in color differences (ΔE * ab and ΔE 00 ) among all RBC evaluated after bleaching applications (T 1 -T 0 and T 2 -T 0 ; P > .05). Regardless of the RBC, mean values of ΔE 00 between all different periods were always below 50%:50% PT value. Conclusions:The 35% hydrogen peroxide bleaching gel influences on color and whiteness of resin-based composites. However, color changes were not clinically perceived and whiteness variations were clinically acceptable.Clinical Significance: Patients should be advised that existing composite restorations might not match the natural tooth color after bleaching, and their replacement may be required. K E Y W O R D Scolor, composite resins, hydrogen peroxide, tooth bleaching, whiteness index

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Section: Discussionmentioning

confidence: 99%

Effect of hydrogen peroxide on color and whiteness of resin‐based composites

Pecho

Martos

Pinto

et al. 2018

J Esthet Restor Dent

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“…The color parameters were measured over white background (L*white 85.6, a*white 1.28, b*white 6.83) while the opacity was directly measured by the device. To measure opacity, samples were made against white, black (L*black 26.32, a*black -38, b*black 0.53), and white backgrounds again (11). The spectrophotometer was adjusted for three consecutive readings, which were later averaged.…”

Section: Immersion Of Coffee and Color Stability Measurement (N=5)mentioning

confidence: 99%

Oxygen Inhibition of Surface Composites and Its Correlation with Degree of Conversion and Color Stability

et al. 2021

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This study investigated the effects of oxygen inhibition and finishing/polishing procedures on the composite resin properties. One bulk-fill and two conventional composite resins (nanoparticle and microhybrid) were evaluated. Specimens were prepared using 4 surface treatments: control, no treatment; Gly, oxygen inhibition with glycerin; FP, finishing and polishing; Gly + FP, glycerin followed by finishing and polishing. The degree of conversion (DC) was measured using Fourier Transformed Infrared Spectroscopy (FTIR) immediately and after 15 days (n=5). Color stability (ΔEab, and ΔE00) and opacity were evaluated using a spectrophotometer after 15 days of immersion in coffee, using the CIELAB system (n=5). Data were analyzed by two-way ANOVA and Tukey tests (α=0.05) and opacity by two-way repeated-measures ANOVA. Glycerin usage increased significantly the DC however had no influence on the ΔEab, ΔE00 and, opacity values. Finishing and polishing reduced ΔEab and ΔE00 values, regardless of composite resins. Microhybrid showed higher opacity, followed by the nanoparticle and bulk fill, regardless of surface treatment. Post-polymerization polishing procedures resulted in lower conversion than using an oxygen inhibitor agent (Gly condition), but similar staining caused by coffee.

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“…Consequently, the discoloring agents were prevented from penetrating the inner surfaces. Similarly, Araujo et al (9) evaluated the effect of modeling resins on the color change and opacity of composites and concluded that the modeling resin did not affect the color. In the current study, the use of modeling resin was observed to have a positive effect on the color change.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the fact that adhesive resins that are used as the modeling liquid comprise hydrophilic monomers and the negative effect of solvents on the color stability of the composite has resulted in the search for a new, alternative method (8). Previous studies have supported the use of solvent-free adhesives containing higher proportions of hydrophilic resin, which can be selected as the modeling liquid (9).…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Wetting Resin on the Color Stability and Microhardness of Esthetic Composites

Cangül

Erpaçal

Adıgüzel

et al. 2020

Odovtos - Int J Dent Sc

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Objective: The aim of this study was to evaluate and compare the effects of the superficial application of two different modeling resins on the surface microhardness and discoloration of composite resins. Material and Methods: The present study used two different composites and modeling resins. The composites were placed in plastic molds. Subsequently, the modeling resins were applied on the surface of the two composite groups. The microhardness and color pertaining to all the groups were evaluated. The current study used the One-Way ANOVA and Kruskal Wallis tests, in order to perform the statistical evaluation (p<0.05). Results: The present study compared the microhardness pertaining to the groups and the highest microhardness values were observed in the Estelite Asteria group (none), whereas the lowest values were observed in the GC Essentia group (Ultradent). Moreover, the current study evaluated the color stability and the greatest discoloration was observed in the control group of the GC Essentia group, whereas the least discoloration was observed in the Estelite Asteria group that included the samples prepared using Ultradent Wetting Resin. Conclusions: The results of the present study demonstrated that the use of modeling resins, which facilitate the placement of composite resins, reduced the microhardness and discoloration of composite resins. The aforementioned effect can be attributed to the variations in the structure of the filling. However, further studies are warranted to support and verify the results of the current study.

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Effects of adhesive used as modeling liquid on the stability of the color and opacity of composites

Cited by 26 publications

References 26 publications

Effect of hydrogen peroxide on color and whiteness of resin‐based composites

Effect of hydrogen peroxide on color and whiteness of resin‐based composites

Oxygen Inhibition of Surface Composites and Its Correlation with Degree of Conversion and Color Stability

Effect of Surface Wetting Resin on the Color Stability and Microhardness of Esthetic Composites

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