Evaluation the Effect of Different Antioxidants Applied After Bleaching on Teeth Color Stability

Objective: Vital bleaching is popular treatment option for discolored teeth. But at post-treatment stage, loss of adhesion is highly reported. Literature focused on antioxidant application for the answer of this issue. The aim of this study is comparing effects of six different antioxidants on color stability of bleached teeth. Material and Methods: This study includes total of 84 extracted intact non-carious lower incisors. 35% hydrogen peroxide was applied on the labial surfaces of specimens in accordance with manufacturer's instructions. The bleached teeth were divided into 7 groups. No antioxidants were applied to the control group. For the experimental groups, the following antioxidants were applied for 10 minutes each: 5% proanthocyanidin, 5% sodium ascorbate, 5% lycopene, %5 green tea, %5 white tea and %5 ?-tocopherol. CIE L*, a* and b* values of the teeth were measured by a spectrophotometer. The data were analyzed using IBM SPSS version 23. Results: The differences between the groups were determined with one-way ANOVA. The one-way ANOVA test revealed a statistically significant difference between the groups (p<0.005). Highest color change was observed in lycopene group and the lowest was belongs to green tea group. Conclusions: Proanthocyanidin, white tea and green tea could be good post-bleaching antioxidant alternatives based on their herbal nature.

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Evaluation of color change in acrylic and bisacrylic resin resins in different solutions

Journal of Research in Dentistry ◽

10.19177/jrd.v5e4201776-84 ◽

2018 ◽

Vol 5 (4) ◽

pp. 76

Author(s):

Mone Laiz Bortoli ◽

Cristina Von Appen ◽

Camila Longoni ◽

Carmen Beatriz Borges Fortes ◽

Jefferson Tomio Sanada

Keyword(s):

Color Change ◽

Color Stability ◽

Acrylic Resin ◽

Color Variation ◽

Color Reading ◽

Control Group ◽

Color Changes ◽

Significant Difference ◽

Prosthesis Material ◽

Chlorhexidine Solution

Aim: This work aimed to evaluate the color stability of an acrylic resin chemically activated (ARCA) using different handling techniques, and a bisacrylic resin when exposed to different pigmentation solutions.Material and Methods: Silicon matrixes were confectioned (10x10x3mm) to be used as specimens. The groups were designed as follows: Group Pot, Group Brush, Group Manufacturer and Group Bisacrylic (n=18). Each group was exposed to three different pigmentation solutions: distilled water, coke and chlorhexidine digluconate 0.12%. Three readings were performed for each specimen using a spectrophotometer, and the evaluations were carried out in three different time. After the color reading, three averages and the standard deviation of variation were performed after 24 hours (T1), 7 days (T2) and 14 days (T3). Data were submitted to the ANOVA and 2 criteria and Tukey (P<0.05) in the statistical software SSPS 18 for Macintosh (SPSS Inc., Chicago, USA).Results: When compared the solutions in each group of material, there was no statistically significant difference, except for T3, where the group Dencor Brush and Bisacrylic demonstrated higher color variation in all the solutions, even in the control group, and the values in Chlorhexidine higher than the other, showing greater instability after 14 days.Conclusions: With the results, bisacrylic resin used as provisory prosthesis material presents greater color instability than the ARCA, when submitted to different solutions. Bisacrylic resin and Dencor Brush present significantly visible color changes in chlorhexidine solution after 14 days. All the materials in coke solution present homogeneity in the color change after 7 days exposition to the solution, with no visible color change.

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

Odovtos - International Journal of Dental Sciences ◽

10.15517/ijds.2021.44391 ◽

2020 ◽

pp. 285-292

Author(s):

Suzan Cangul ◽

Begum Erpacal ◽

Ozkan Adiguzel ◽

Mehmet Unal ◽

Ayse Gunay

Keyword(s):

Statistical Evaluation ◽

Color Stability ◽

Composite Resins ◽

Control Group ◽

Surface Wetting ◽

Surface Microhardness ◽

The One ◽

One Way Anova ◽

Effect Of Surface

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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Effect of Silver Nanoparticles on Some Physical& Biological Properties of Fluid Denture Base Material

Al-Kitab Journal for Pure Sciences ◽

10.32441/kjps.04.01.p3 ◽

2020 ◽

Vol 04 (1) ◽

pp. 27-40

Author(s):

Jaymin Taher ◽

Salem Salem

Keyword(s):

Silver Nanoparticles ◽

Impact Strength ◽

Color Change ◽

Base Material ◽

Color Stability ◽

Biological Properties ◽

Strength Test ◽

Control Group ◽

Transverse Strength ◽

Significant Difference

Poly methyl methacrylate (PMMA) is one of the most widely used materials in modern prosthodontics. It is widely known due to its simplicity in use and acceptable aesthetic. A new concept of polymerization fluid resin technique was instead of heat and gypsum material. Forty specimens were prepared from two brands of fluid acrylic resin. The samples were divided into two groups, the first one was the control while the other group was incorporated with silver nanoparticles(modified). The tests performed were impact strength, transverse strength, color stability and candida retention ability on the samples. 10 samples for each test were used. The results showed that modified group had significantly higher impact strength than the control group. There was non-significant difference between group of modified fluid acrylic and control group. Regarding color stability, there were highly significant color change after 10 days of immersion in the tea solution for the modified group the results of the biological test showed that the candida retention of the control group was significantly higher than modified group. Within the limitation of this study it can be concluded that addition of silver nanoparticles has resulted in significant difference between control and modified group for impact strength test. While non-significant difference was seen for transverse strength test. In regard to color stability, showed enhancement in color stability for both before and after placement in tea solution. Addition of silver nanoparticles also caused reduction in candida albicans retention in the added samples.

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Effect of Liquid Polishing System on Color Stability of Bleached Enamel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.804.141 ◽

2013 ◽

Vol 804 ◽

pp. 141-145

Author(s):

Xiu Lan Chen ◽

Huang Qin Chen

Keyword(s):

Red Wine ◽

Color Change ◽

Color Stability ◽

Control Groups ◽

Significant Difference ◽

Before And After ◽

Total Color Change ◽

Post Hoc ◽

And Control ◽

One Way Anova

The purpose of this study was to investigate the effect of liquid polishing system (BisCover) on color stability of the bleached enamel upon exposure to a staining agent-red wine. Forty specimens were prepared. They were divided into 2 groups and different procedures, including only bleaching with Opalescence PF (PF) or Opalescence regular (R) gels, and application of BisCover after blaeching (PF-B, R-B) were used. Unbleached specimens were served as control groups (control-1 and control-2). The specimens were stored for 48 h in red wine. The color of all specimens was measured before and after exposure with a spectrophotometer, and total color change (ΔE*) were calculated. The data were analyzed with a one-way ANOVA and the means were compared by Tukeys post hoc analysis (α=0.05). PF-B and R-B groups demonstrated significantly less color change than PF and R groups. the control-1 and control-2 groups had the least color change. No significant difference were observed between PF and R group. BisCover improved the color stability of bleached enamel in red wine.

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Color Stability of Tetric® N-Ceram Bulk Fill Restorative Composite Resin after Immersion in Different Drinks

Journal of Advanced Oral Research ◽

10.1177/2229411217729080 ◽

2017 ◽

Vol 8 (1-2) ◽

pp. 34-41

Author(s):

Abdullah Saad Al-Abdullah ◽

Roula S. Al-Bounni ◽

Mohammad Al-Omari

Keyword(s):

Composite Resin ◽

Color Change ◽

Color Stability ◽

Energy Drink ◽

Deionized Water ◽

Control Group ◽

Protein Supplement ◽

Restorative Material ◽

Significant Difference ◽

Red Bull

Objective: To evaluate the color stability of Tetric® N-Ceram Bulk Fill composite restorative material after immersion in three different (energy drink, protein supplement solution, and combination of energy drink and protein supplement solution) drinks. Materials and Methods: Composite resin disks, 2 mm in depth and 5 mm in diameter, were prepared from the Tetric® N-Ceram Bulk Fill composite restorative material. Specimens were tested after immersion and aging in energy drink (Red Bull) alone, protein supplement solution alone, and in combination with energy drink and protein supplement. Deionized water was used as a control group. Specimens were stored at room temperature of ±23°C for a period of one week in each drink. Color was assessed in the CIELAB using Color Eye 7000A Spectrophotometer. Color differences in different group specimens were measured. Mean values were statistically analyzed using one-way analysis of variance (ANOVA). Further Tukey’s multiple comparison tests were applied to know the differences between the group of specimens. A p value of p < 0.05 was set as significance level. Results: N-Ceram Bulk Fill composite showed Δ L, Δ a, Δ b, and Δ E mean and standard deviation values when immersed in deionized water (–2.6 ± 3.24, 0.16 ± 0.19, 0.32 ± 1.26, and 3.51 ± 2.47), energy drink (–4.19 ± 4.24, 0.21 ± 0.21, 1.57 ± 1.32, and 5.40 ± 3.11), protein supplement (62.71 ± 12.48, –2.63 ± 0.7, 7.7 ± 5.67, and 63.45 ± 12.56), combined energy drink and protein supplement (68.52 ± 13.43, –4.06 ± 1.73, 10.94 ± 5.31, and 69.71 ± 13.42), respectively. All the color coordinates (Δ L, Δ a, and Δ b) showed statistically significant difference, p < 0.001. The color change of N-Ceram Bulk Fill composite specimens Δ E occurred by immersion in energy drink, protein supplement solution, and combined solution of energy drink and protein supplement after seven days was found to be statistically significant p < 0.001. Conclusion: The study’s finding suggests that the energy drink (Red Bull), protein supplement (ISOPURE), and combined immersion in energy drink and protein supplements caused perceptible and clinically unacceptable color change in the Tetric® N-Ceram Bulk Fill composite material. This color change was remarkably high with a combined immersion in energy drink and protein supplement solution.

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Color Stability of CAD/CAM Interim Material for Long-Term Fixed Dental Prostheses vs. Conventional Materials after Immersion in Different Staining Solutions

Journal of Composites Science ◽

10.3390/jcs5040106 ◽

2021 ◽

Vol 5 (4) ◽

pp. 106

Author(s):

Lissethe Peñate ◽

Montse Mercade ◽

María Arregui ◽

Miguel Roig ◽

Juan Basilio ◽

...

Keyword(s):

Computer Aided Design ◽

Color Change ◽

Pearson Correlation ◽

Contrast Ratio ◽

Color Stability ◽

Initial Time ◽

Control Group ◽

Computer Assisted ◽

Significant Difference ◽

Cad Cam

The color stability of interim computer-aided design and computer-assisted manufacturing (CAD/CAM) materials has not been exhaustively investigated. The aim of this study was to compare the translucency (TP) and contrast ratio (CR) of CAD/CAM blocks and conventional interim materials, as well as the effects of varnish application and tooth-brushing on color stability after immersion in different staining solutions. Four hundred and eighty specimens were fabricated with four different interim materials (n = 120) and were divided into three experimental, and one control group (n = 30). The color measurements were taken at the initial time (T0), 24 h (T1), 7 days (T2), and 30 days (T3) after immersion in different solutions. CIEDE2000 (ΔE00) values were analyzed with ANOVA and Fischer’s LSD test with a 95% confidence interval. The relationship between TP and CR was analyzed with a Pearson correlation. All interim materials showed a significant difference (p < 0.05) in color change after 30 days. Results showed that polyethyl methacrylate resins (PEMA) had the highest stability over time. The TP and CR were statistically significant (p < 0.05). It was observed that brushing improved the color stability but the ΔE00 were the highest when the varnish alone or varnish and brushing were used, except in the bis-acryl group, in which varnish and brushing decreased the color stainability.

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The Effects of Coffee and Energy Drink on Color Stability of Hybrid Ceramics

European Annals of Dental Sciences ◽

10.52037/eads.2021.0006 ◽

2021 ◽

Author(s):

Işıl Sarıkaya ◽

Hande Dilli

Keyword(s):

Color Change ◽

Color Stability ◽

Color Difference ◽

Ceramic Materials ◽

Energy Drink ◽

Control Group ◽

Distilled Water ◽

Color Measurements ◽

Difference Formula ◽

Significant Difference

Purpose: The aim of this study was to compare the color stability of two different hybrid ceramic materials. Materials & Methods: Using the precision cutting device (Micracut, Metcon, Turkey), 36 specimens (12 x 15 x 1 mm) were obtained from Vita Enamic (Vita Zahnfabrik, Germany) and Lava Ultimate (3M ESPE, St.Paul, USA) CAD / CAM blocks. After finishing procedures were completed, all specimens were stored in distilled water for 24 h. Then, the specimens were dried and the initial color measurements were made. L, a, b values were determined using a spectrophotometer (Vita Easy Shade, Vita Zahnfabrik, Germany). The specimens were then divided into 3 test groups and stored in coffee (Nescafe Classic, Turkey) (G2, G5), energy drink (Red Bull, Austria) (G3, G6), and in the distilled water as the control group (G1, G4), for 48 h. After 48 h, the specimens were washed with distilled water and dried. Second color measurements were made. ∆E00 values were calculated using the CIEDE 2000 color-difference formula. Results: Data were analyzed by two-way ANOVA. Multiple comparisons were made with Bonferroni’s test. There was a statistically significant difference between 2 ceramics (p=0.035). Generally, Lava Ultimate showed more color change than Vita Enamic. Among the beverages, coffee was significantly different for both ceramics than control and energy drink (p<0.05). Conclusion: Lava Ultimate, showed more color change than Vita Enamic. Coffee has also been determined as the most colorant drink for both hybrid ceramics.

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Efektifitas Debridemen Mekanik Pada Luka Bakar Derajat III Terhadap Kecepatan Penyembuhan Luka

JKEP ◽

10.32668/jkep.v4i2.254 ◽

2019 ◽

Vol 4 (2) ◽

pp. 93-103

Author(s):

Nurma Afiani ◽

Sanarto Santoso ◽

Tina Handayani N ◽

M. Fendi Nur Yahya

Keyword(s):

Simple Random Sampling ◽

Control Group ◽

Control Group Design ◽

Degree Burn ◽

Significant Difference ◽

Post Test ◽

Long Time ◽

The One ◽

Post Hoc ◽

One Way Anova

Third degree burn is a special wound cause consist of eschar for a long time. Kept eschar in third degree burn will delay healing procces. That is why eschar should be disapper by debridement process. Mechanical debridement used in this research. The aim of this research is to know the differences between mechanical debridement 24 hour and 48 hour in healing acceleration. This research is a true experimental by using post test only control group design. The samples was selected by simple random sampling and was divided into three groups, each group consist of six rats, they are 24 hour group, 48 hour group and control group. The data was analyzed by one-way ANOVA then followed by Post Hoc LSD. The one way ANOVA result p = 0,018 (p < 0,05) so there was a significant difference between control group and experimental groups. But the Post Hoc LSD results p = 0,123 ( p > 0,05) so there was no significant difference between 24 hour group and 48 hour group in healing acceleration. For further researchers, it is suggested to use microscopic technique to know the effect of mechanical debridement in healing acceleration.

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Evaluation of color stability of different temporary restorative materials

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.0017 ◽

2015 ◽

Vol 44 (5) ◽

pp. 262-267 ◽

Cited By ~ 1

Author(s):

José Vitor Quinelli Mazaro ◽

Luiz Miguel Minani ◽

Adriana Cristina Zavanelli ◽

Caroline Cantieri de Mello ◽

Cleidiel Aparecido Araújo Lemos

Keyword(s):

Storage Time ◽

Color Change ◽

Artificial Saliva ◽

Color Stability ◽

Time Interval ◽

Acrylic Resins ◽

Significant Difference ◽

Restorative Materials ◽

Before And After ◽

Level Of Significance

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). When bis-acrylic resins were compared no significant difference was observed between the resins Structur and Luxatemp (p=0.767). As regards solutions tested, coffee showed the highest color change values (p<0.001), and the longer the storage time interval, the greater was the color change in all the temporary restorative materials analyzed (p<0.001).ConclusionAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). Coffee caused the greatest color change, and immersion time was determinant in color stability of the temporary materials analyzed.

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Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

European Journal of Dentistry ◽

10.1055/s-0040-1705071 ◽

2020 ◽

Vol 14 (01) ◽

pp. 085-091

Author(s):

Sedighe Sadat Hashemikamangar ◽

Farnoosh Hoseinpour ◽

Nazanin Kiomarsi ◽

Mehrzad Gholampour Dehaki ◽

Mohammad Javad Kharazifard

Keyword(s):

Statistical Analysis ◽

Color Change ◽

Color Stability ◽

Composite Resins ◽

Time Points ◽

Color Changes ◽

Honestly Significant Difference ◽

Significant Difference ◽

Resin Modified Glass Ionomer ◽

Composite Samples

Abstract Objectives This study aimed to assess the effect of an optical whitening toothpaste on color stability of microhybrid, nanofilled, and microfilled composite resins and resin-modified glass ionomer (RMGI) cement in comparison of two other toothpastes. Materials and Methods In this experimental study, disc-shaped composite samples were fabricated. The samples were then polished using silicon carbide papers. Twenty-seven samples of each material were fabricated and subjected to colorimetry using a spectrophotometer. Each group of material was then divided into three subgroups for the application of conventional whitening and whitening containing blue covarine toothpastes. One operator brushed the samples with an electric soft toothbrush with circular motion twice a day, each time for 30 seconds. Colorimetry was performed at 0, 1, 7, 30, and 90 days. Statistical Analysis Two-way analysis of variance (ANOVA), one-way ANOVA, and Tukey’s honestly significant difference (HSD) test were used for statistical analysis. Results The interaction effect of type of restorative material and time on ∆E was not significant at baseline or 1 day (p > 0.05). The effect of type of toothpaste on ∆E was not significant at baseline or 1 day (p = 0.78) but the effect of type of material was significant (p < 0.05). The toothpastes had significantly different effects on ∆E of Z250 at all time points (p < 0.05) except for ∆E0–30 (p = 0.106). The toothpastes had significantly different effects on ∆E of Z350 and Gradia at all time points (p < 0.05). The same was true for RMGI except for ∆E0–7 (p = 0.43) and ∆E0–90 (p = 0.52). The majority of color changes caused by toothpastes were not clinically perceivable (∆E < 3.3), except for ∆E0–90 by the whitening toothpaste (∆E = 9), ∆E0–90 by the conventional toothpaste for Z350 (∆E = 3.9), and ∆E0–1 by the whitening toothpaste for RMGI (∆E = 3.7). Conclusion The color change of all composite samples was not clinically perceivable (<3.3) at all time points, which shows that the tested toothpastes do not cause a significant change in color of composite materials.

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