Effect of surface polishing and oral beverages on the surface profile and color stability of two composite resins – in vitro

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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Color stability of composites subjected to accelerated aging after curing using either a halogen or a light emitting diode source

Brazilian Dental Journal ◽

10.1590/s0103-64402007000200006 ◽

2007 ◽

Vol 18 (2) ◽

pp. 119-123 ◽

Cited By ~ 26

Author(s):

Fernanda de Carvalho Panzeri Pires-de-Souza ◽

Lucas da Fonseca Roberti Garcia ◽

Hisham Mohamad Hamida ◽

Luciana Assirati Casemiro

Keyword(s):

Color Change ◽

Light Emitting Diode ◽

Accelerated Aging ◽

Color Stability ◽

Composite Resins ◽

Significance Level ◽

Light Emitting ◽

Before And After ◽

Qth Light

The purpose of this study was to evaluate, in vitro, the color stability of three composite resins of two different shades (A3 and C3) cured with either a quartz tungsten halogen (QTH) or a light emitting diode (LED) source. Forty specimens (20 x 2 mm) were prepared for each composite (Tetric Ceram®, Heliomolar® and Esthet-X®), being 20 for each shade. In each group, 10 specimens were light-cured using the QTH unit and 10 with the LED source. The shade of the materials was evaluated before and after submitting the specimens to artificial accelerated aging (4 h UV-B/4 h condensing vapor), using a reflection spectrophotometer. deltaE means were calculated and analyzed statistically by 2-way ANOVA and Tukey's test at 5% significance level. Both A3 and C3 shades of Esthet-X composite resin showed the lowest color change when cured with the QTH light, while Tetric C3 cured with the QTH light showed the highest color change.

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Color stability assessment of two different composite resins with variable immersion time using various beverages: An In vitro study

Journal of Pharmacy And Bioallied Sciences ◽

10.4103/jpbs.jpbs_149_17 ◽

2017 ◽

Vol 9 (5) ◽

pp. 161 ◽

Cited By ~ 3

Author(s):

R Ajay ◽

MSenthil Kumar ◽

SA Miskeen Sahib ◽

M Chittrarasu ◽

M Navarasu ◽

...

Keyword(s):

Immersion Time ◽

In Vitro Study ◽

Color Stability ◽

Composite Resins ◽

Vitro Study ◽

Stability Assessment

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Influence of alternative photoinitiators in composite resins: A literature review

Research Society and Development ◽

10.33448/rsd-v9i12.11128 ◽

2020 ◽

Vol 9 (12) ◽

pp. e32091211128

Author(s):

Nathalie Murielly Rolim de Abreu ◽

Ruth Venâncio Fernandes Dantas ◽

Hugo Ramalho Sarmento ◽

Robinsom Viégas Montenegro ◽

Heloísa Helena Pinho Veloso ◽

...

Keyword(s):

Search Strategy ◽

Color Stability ◽

Composite Resins ◽

Degree Of Conversion ◽

Exclusion Criteria ◽

Light Emitting ◽

Electronic Search ◽

Light Curing ◽

Knoop Microhardness

Objective: To evaluate the influence of alternative photoinitiators present in composite resins related to yellowing, color stability, photosensitivity, light-curing efficiency, degree of conversion, and microhardness. Materials and methods: The literature was reviewed by two independent reviewers at PubMed. The search strategy was carried out using the following descriptors: (Photoinitiators, dental) AND (Curing lights, dental) AND (Composite Resins) NOT (Case report). The electronic search was carried out until March 2019, without language restrictions, and inclusion and exclusion criteria were applied in the selection. Results: Thirteen articles met the previously established criteria, and all were included. Of these, most were in vitro studies. After the aging of the composite, all systems suffered yellowing, however the isolates with camphorquinone were the most affected and, although there is a greater tendency to yellowing, this does not directly affect color stability. However, the literature is still conflicting about which system has significant color stability. Regarding photosensitivity, all photoinitiators have different absorption peaks. In this sense, the photopolymerization must be chosen with caution, as the conversion of monomers and microhardness proved to be directly linked to the correct combination of photoactivator and photopolymerizing unit. Conclusion: Alternative photoinitiators have a lower yellowing rate and good color stability. They can be up to five times more sensitive than systems containing isolated camphorquinone. Only third-generation light-emitting diodes photopolymerize satisfactorily composite resins that have alternative photoinitiators in their composition, ensuring a good degree of conversion and acceptable Knoop microhardness values.

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Color Stability of Bulk Fill Composite Resins Submitted to Coffee Staining

Brazilian Dental Science ◽

10.14295/bds.2021.v24i1.2304 ◽

2020 ◽

Vol 24 (1) ◽

Author(s):

Beatriz Maria Arruda ◽

Julio Cesar Bassi ◽

Rafael Pino Vitti ◽

Renata Siqueira Scatolin

Keyword(s):

Analysis Of Variance ◽

Composite Resin ◽

Color Change ◽

In Vitro Study ◽

Color Stability ◽

Composite Resins ◽

Vitro Study ◽

Change Analysis ◽

Cie Lab

Objective: The aim of this in vitro study was to evaluate the color stability of different bulk fill composite resins after extrinsic staining with coffee. Material and methods: Forty-eight disk-shaped specimens (6 mm diameter x 2 mm thick) of each composite resin were prepared for color change test. The composite resins were divided into 4 groups (n=12): one conventional composite resin (Filtek Z250) and three bulk-fill composite resins (Filtek Bulk Fill, Aura Bulk Fill, and Opus Bulk Fill). The samples were stained with 20 mL coffee solution for 7 days, with the solution being replaced every 24 h. The color change analysis was performed using a spectrophotometer, according to the CIE Lab formula. Data were analyzed using the Analysis of variance (ANOVA) and Tukey HSD tests (?=0.05). Results: The results revealed significant differences in color change among the composite resins tested (?<0.0001). The Aura Bulk Fill and Opus Bulk Fill showed the highest color change values. Conclusions: Thus, all the resins analyzed were susceptible to extrinsic staining with coffee, and the Filtek Bulk Fill showed the lowest color change value.

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In Vitro Efficacy of Listerine Whitening Mouthwash for Color Recovery of Two Discolored Composite Resins

Frontiers in Dentistry ◽

10.18502/fid.v16i3.1589 ◽

2019 ◽

Cited By ~ 1

Author(s):

Haleh Kazemi Yazdi ◽

Negin Nasoohi ◽

Mahla Benvidi

Keyword(s):

Experimental Study ◽

Analysis Of Variance ◽

Significant Role ◽

Repeated Measures ◽

Color Change ◽

Color Stability ◽

Composite Resins ◽

Primary Color ◽

Repeated Measures Analysis

Objectives: Color stability of composite resins has a significant role in their durability and clinical service. Considering the increasing use of composite resins and their gradual discoloration, this study aimed to assess the efficacy of Listerine whitening mouthwash for color recovery of two discolored composite resins. Materials and Methods: This in-vitro experimental study was performed on 20 samples fabricated of Filtek Z350XT (3M ESPE, St. Paul, MN, USA) and IPS Empress Direct (Ivoclar Vivadent, Schaan, Liechtenstein) composite resins. Primary colorimetry was performed using a spectrophotometer. The samples were immersed in a coffee drink for 7 days. They were then immersed in Listerine mouthwash for 4 minutes daily for 56 days. After this period, the color change of composite resins was reevaluated. Data were analyzed using repeated-measures analysis of variance (ANOVA) and t-test. Results: The primary color change of Z350XT after immersion in coffee was 1.6 times greater than that of IPS composite (P<0.0001). The color recovery of IPS and Z350XT after immersion in the mouthwash was 1.06±0.58 (P<0.01) and 2.58±1.65 (P<0.001) units, respectively. The color change of Z350XT after exposure to the mouthwash was 25% (1.4 times) greater than that of IPS (P<0.01). Conclusion: Both composite resins experienced a clinically unacceptable discoloration after exposure to coffee (∆E>3.3). Filtek Z350XT showed greater color change than IPS. Use of Listerine whitening mouthwash caused significant color recovery in both composite resins.

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Characterization of Bis-Acryl Composite Resins for Provisional Restorations

Brazilian Dental Journal ◽

10.1590/0103-6440201601418 ◽

2017 ◽

Vol 28 (3) ◽

pp. 354-361 ◽

Cited By ~ 7

Author(s):

Júlia K. Schwantz ◽

Aline Oliveira-Ogliari ◽

Carine T. Meereis ◽

Fernanda B. Leal ◽

Fabrício A. Ogliari ◽

...

Keyword(s):

Flexural Strength ◽

Poisson Ratio ◽

Flexural Modulus ◽

Color Stability ◽

Polymerization Kinetics ◽

Composite Resins ◽

Thixotropic Behavior ◽

Flexural Tests ◽

Optical Color

Abstract This study investigated the in vitro performance of the commercial bis-acryl composite resins Systemp C&B II (SYS, Ivoclar Vivadent), Protemp 4 (PT4, 3M ESPE), Structur 2C (ST2, Voco) and ProviPlast (PVP, Biodinamica). Characterization involved optical (color stability, translucency parameter, fluorescence), surface (roughness, morphology and elemental composition), physical-chemical (viscosity, polymerization kinetics) and mechanical analyses (Poisson ratio, biaxial flexural strength, flexural modulus). Most tests were carried out after 24 h, but optical and mechanical analyses were carried out after storage in water at 37 °C for 1, 15, and 30 days. Data were statistically analyzed (a=0.05). Most results were material dependent. SYS and PT4 showed stability in color and translucency over time. All materials had similar or higher fluorescence than human enamel. SC2 and PVP showed rougher surfaces than the other bis-acryl composites. Smaller filler particles were observed on the surface of PT4 and PVP compared with the coarser particles from ST2 and SYS. Viscosity readings indicated a thixotropic behavior for all tested materials. SYS had the lowest and PT4 the highest degree of C=C conversion after 10 min. In the polymerization kinetics, PT4 had the highest maximum polymerization rate and reached earlier the transition between polymerization autoacceleration and autodeceleration. PT4 and SYS had significantly higher flexural strength and modulus than ST2 and PVP for most storage times. Results for Poisson ratio varied between materials. Longer storage periods were generally associated with higher frequency of catastrophic failures in the flexural tests. In conclusion, the performance of bis-acryl composite resins varied largely among materials.

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Color Stability of Composites After Short-term Oral Simulation: An in vitro Study

The Open Dentistry Journal ◽

10.2174/1874210601610010431 ◽

2016 ◽

Vol 10 (1) ◽

pp. 431-437 ◽

Cited By ~ 3

Author(s):

Didem Öner Özdaş ◽

Mağrur Kazak ◽

Aylin Çilingir ◽

Meryem Gülce Subaşı ◽

Murat Tiryaki ◽

...

Keyword(s):

Repeated Measures ◽

Color Change ◽

In Vitro Study ◽

Color Stability ◽

Black Tea ◽

Composite Resins ◽

Pomegranate Juice ◽

Restorative Materials ◽

Color Alteration

Background:Although most of the studies investigated color stability of different restorative materials, evaluation of color stability of composites after immersion in multiple beverages in the same day by anin vitrooral simulation study is unclear.Objective:To assess color change of different restorative materials at the end of days 1, 14, and 30 of immersion in multiple liquid types to mimic the oral environmentin vitro.Method:Ten disc-shaped specimens were made from each of four different resin composites (Filtek Z250, Voco x-tra base, Beautifil Flow Plus, Beautifil II). Baseline color value of each sample was measured using a spectrophotometer. Each composite was respectively immersed in coffee, an orange/pomegranate juice mixture, black tea, and a mouth rinse on the same day to mimic daily liquid consumption of individuals. Color measurements were taken after 1, 14, and 30 days by spectrophotometer and color change values were calculated. Statistical analyses were executed by one-way ANOVA/Tukey HSD and repeated-measures ANOVA.Results:All materials showed significant color change after 1, 14, and 30 days (P< 0.01) of immersion in liquids, with the lowest color alteration observed at the 1stday and the highest observed after the 30thday. Among the materials tested, at each time point (1, 14, and 30 days), the lowest color alteration was detected in Filtek Z250 and the highest color alteration was detected in Beautifil II.Conclusion:Color alteration of composite resins is affected by composite type and storage time. With the exception of 1 day of storage, color changes of all materials were substantial and clinically unacceptable.

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