Effects of Immersion Media and Repolishing on Color Stability and Superficial Morphology of Nanofilled Composite Resin

2014 ◽  
Vol 20 (4) ◽  
pp. 1234-1239 ◽  
Author(s):  
Ana Luísa Botta Martins de Oliveira ◽  
Ana Carolina Botta ◽  
Juliana Álvares Duarte Bonini Campos ◽  
Patrícia Petromilli Nordi Sasso Garcia
Keyword(s):  
Statistical Difference ◽  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Color Reading ◽  
Immersion Medium ◽  
Mixed Analysis ◽  
Mouth Rinses ◽  
Scanning Electron

AbstractThis study evaluated the influence of fluoride mouth rinses and repolishing on the superficial morphology and color stability of nanofilled resin. About 150 specimens were prepared and polished using aluminum oxide discs for 15 s with a pressure of 2 kg. The experimental groups were divided according to the immersion medium (artificial saliva, 0.5% sodium fluoride, Fluordent Reach, Oral B, Fluorgard) and repolishing procedure (without and with). The specimens were continuously immersed for 1 week. Thereafter, half of each sample was repolished. A color reading was performed after 24 h of immersion in the artificial saliva baseline, after continuous immersion, and after repolishing. The superficial morphology was examined using scanning electron microscopy (SEM) in a qualitative way. Color change (∆E) data were submitted to a mixed analysis of variance using a Shapiro–Wilk test (p>0.05 for the different immersion media) and Sidak’s test (p<0.05 for the differences between groups). In the interaction between the repolishing and the immersion media, Fluorgard showed a statistical difference between the ∆E values with and without repolishing (p<0.0001). On the SEM observations, both Fluordent Reach and Fluorgard caused degradation of the superficial resinous matrix of the composite after continuous immersion. This matrix was removed after repolishing.

scholarly journals COLOR STABILITY OF A NANOFILLED RESIN: INFLUENCE OF POLISHING AND FINISHING AND FLUORIDE SOLUTIONS ACCORDING TO TIME

2014 ◽  
Vol 2 (2) ◽  
pp. 119 ◽  
Author(s):  
Ana Luísa Botta Martins Oliveira ◽  
Patrícia Aleixo dos Santos Domingos ◽  
Juliana Alvares Duarte Bonini Campos ◽  
Ana Carolina Botta ◽  
Patrícia Petromilli Nordi Sasso Garcia
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Repeated Measure ◽  
Color Analysis ◽  
Immersion Medium ◽  
Mixed Analysis ◽  
Initial Color ◽  
Level Of Significance

AIM: The aim of the study was evaluate the finishing and polishing effect of the color stability of the composite resin Filtek Supreme XT, according to different fluoride solutions and time. MATERIAL AND METHODS: Specimens were prepared (n=140) with half of the samples finished and polished. The experimental groups were divided according to the presence or absence of finishing and polishing and immersion solutions (artificial saliva, sodium fluoride solution at 0.05% - manipulated, Fluordent Reach, Oral B, Fluorgard). The specimens remained in artificial saliva for 24 hours and were subjected to an initial color analysis using a spectrophotometer CIELab system. Then, they were immersed in the experimental solutions for 1 minute a day. The readings of the color change were made after 24 and 48 hours, 7, 14, 21, 30 and 60 days after the first immersion. The three-way mixed Analysis of Variance (ANOVA) ("finishing/polishing", "immersion medium" and “time”) were performed. For multiple comparisons, the Sidak test for repeated measure was used, with a 5% level of significance. RESULTS: The finishing and polishing factor showed significant variability, independently of the immersion media (p<0.001). CONCLUSION: Finishing and polishing procedures yielded better color stability to composite resin over time, regardless of the immersion media.

scholarly journals Does the temperature of beverages affect the surface roughness, hardness, and color stability of a composite resin?

2013 ◽  
Vol 07 (02) ◽  
pp. 165-171 ◽  
Author(s):  
Duygu Tuncer ◽  
Emel Karaman ◽  
Esra Firat
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
The Other ◽  
Control Group ◽  
Baseline Values ◽  
Hardness Values ◽  
Properties Of Composites

ABSTRACT Objective: To investigate the effect of beverages′ temperature on the surface roughness, hardness, and color stability of a composite resin. Materials and Methods: Fifty specimens of the Filtek Z250 composite (3M ESPE, Dental Products, St.Paul, MN, USA) were prepared and initial roughness, microhardness, and color were measured. Then the specimens were randomly divided into five groups of 10 specimens each: Coffee at 70°C, coffee at 37°C, cola at 10°C, cola at 37°C, and artificial saliva (control). After the samples were subjected to 15 min × 3 cycles per day of exposure to the solutions for 30 days, the final measurements were recorded. Results: After immersion in beverages, the artificial saliva group showed hardness values higher than those of the other groups (P < 0.001) and the microhardness values were significantly different from the initial values in all groups except for the control group. Both cola groups showed roughness values higher than the baseline values (P < 0.05), while the other groups showed values similar to the baseline measurements. When ΔE measurements were examined, the 70°C coffee group showed the highest color change among all the groups (P < 0.05). Conclusion: High-temperature solutions caused alterations in certain properties of composites, such as increased color change, although they did not affect the hardness or roughness of the composite resin material tested.

scholarly journals THE EVALUATION OF THE EFFECT OF VARIOUS MOUTH RINSE ON THE DISCOLORATION OF DIFFERENT COMPOSITE RESINS

2019 ◽  
Vol 8 (5) ◽  
Author(s):  
Vandana James ◽  
Sundaresan Balagopal ◽  
Vaishnavi . I ◽  
Sunil Chandy Varghese ◽  
Varshinee G. J ◽  
...  
Keyword(s):  
Composite Resin ◽  
Artificial Saliva ◽  
Color Stability ◽  
Low Ph ◽  
Composite Resins ◽  
Filler Material ◽  
Mouth Rinse ◽  
Mouth Rinses ◽  
Different Types ◽  
Aesthetic Dentistry

AIM: To determine the effect of various types of mouthrinse on the color stability of the composite resin materials. MATERIALS AND METHODS:  4 types of resin material were chosen and immersed in 4 different types of mouthrinses for 2 mins daily and then restored in artificial saliva for rest of the time for 3 months. The baseline color values and post immersion color values were evaluated using colorimetrics. RESULTS:   All the resin material underwent discoloration. The lowest discoloration was seen during the usage of amflor mouthrinse. The lowest discoloration among the resin material was seen there in nanofill resin material. CONCLUSIONS: From this study we can conclude that mouth rinses with low pH are more detrimental. It’s the filler material matrix that plays a key role on the color stability of the material. KEYWORDS: aesthetic dentistry, discoloration ,  mouthrinse.

scholarly journals Effect of whitening mouth rinses on the chemical and physical properties of a nanofilled composite

2021 ◽  
Vol 20 ◽  
pp. e219320
Author(s):  
Laura Carolina Kepler ◽  
Ana Paula Morona Rodrigues ◽  
Mauro Antonio Dall Agnol ◽  
Sinval Adalberto Rodrigues-Junior
Keyword(s):  
Surface Roughness ◽  
Physical Properties ◽  
Water Sorption ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Mouth Rinses

Aim: This study analyzed the effect of whitening mouth rinses on water sorption (WS), solubility (SL), color change, and surface roughness of a nanofilled composite. Whitening perceptibility and acceptability (WID) were also studied. Methods: Forty specimens of Filtek Z350XT, shade EA2 were produced and randomly distributed (n=8) to AS – artificial saliva (control); LWE – Listerine Whitening Extreme; CLW – Colgate Luminous White; LCM – Listerine Cool Mint; and CP – Colgate Plax. They were immersed in the mouth rinses 2x/day, for one minute, during 28 days. The color was assessed using an Easyshade spectrophotometer (CIE-L*a*b* system). Surface roughness (Ra-μm) was measured with three parallel measures, using an RP-200 roughness meter. The WS and SL (μg/mm-3) were analyzed based on the ISO 4049 recommendations. The data were analyzed using one- and two-way ANOVA/Tukey tests (α=0.05). Results: Surface roughness significantly increased after immersion in AS and LCM, with no significant differences between the groups either before or after immersion. The ΔE* was not significantly different between the groups. All substances produced a ΔWID higher than the 50%:50% perceptibility and acceptability thresholds. The WS and SL were not significantly affected by the mouth rinses. Conclusion: Whitening mouth rinses did not affect WS, SL, surface roughness, and color stability of a nanofilled composite, regardless of the presence of ethanol in the composition.

scholarly journals Evaluation of color stability of different temporary restorative materials

2015 ◽  
Vol 44 (5) ◽  
pp. 262-267 ◽  
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.

scholarly journals Quantification of color variation of restorative materials used on pediatric dentistry after pigmentation

2015 ◽  
Vol 63 (4) ◽  
pp. 383-388
Author(s):  
Luísa Bandeira Pires Monteiro LOPES ◽  
Andreia Sofia Lopes de ARAÚJO ◽  
Virginia Barreiros MILAGRE
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Pediatric Dentistry ◽  
Color Variation ◽  
Control Group ◽  
Chocolate Milk ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Restorative Materials

Objective: To quantify the color variation of two glass ionomer cements and a composite resin used in pediatric dentistry, after being immersed in different pigments agents. Methods: Using two glass ionomer cements (Ketac(tm) Molar and Photac(tm) Fil) and a microhybrid composite resin (Filtek(tm) z250), were produced 40 disks of each material (10 mm in diameter and 2 mm thick). The samples were soaked in artificial saliva (control group), coke, peach Ice Tea(r) and chocolate milk, for 72 hours in an oven at 37ºC. After this period, the samples were washed in 50 ml of distilled water. Finally, using the spectrophotometer, it was made the reading of results. The color change was measured according to the CIE L * a * b * system. Color changes were statistically analyzed using parametric one-way ANOVA and ANOVA with Welch correction, the nonparametric Kruskal-Wallis tests and post-hoc Tukey and Dunnet T3 with p≤ 0.05. Results: The immersion of restorative materials in different pigmentation agents caused a significant color variation on the samples. The agent who presented higher results was the Peach Ice Tea(r). The chocolate milk was the fluid with lowest pigmentation capacity of all restorative materials under study. The greater color variation was found on the Ketac(tm) Molar submerged in Coca-Cola(r) and the smallest on the Filtek(tm) z250 in chocolate milk. Conclusion: All restorative materials were shown to be susceptible to pigmentation by all agents. The Filtek(tm) z250 proved to have better color stability, followed by Photac(tm) Fil and finally by Ketac(tm) Molar.

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

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.

scholarly journals Color Stability and Gloss of Esthetic Restorative Materials after Chemical Challenges

2019 ◽  
Vol 30 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Eduardo Haruki Ozera ◽  
Fernanda Miori Pascon ◽  
Américo Bortolazzo Correr ◽  
Regina Maria Puppin-Rontani ◽  
Aline Rogéria de Castilho ◽  
...  
Keyword(s):  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Initial Surface ◽  
Resin Composites ◽  
Cranberry Juice ◽  
Color Changes ◽  
Restorative Materials ◽  
Post Hoc ◽  
Acidic Beverages

Abstract This study evaluated gloss and color changes of esthetic restorative materials subjected to different acidic beverages. Specimens of resin composites (Z350XT (Z350), IPS Empress Direct (ED), Charisma Diamond (CD)) were prepared and the initial surface gloss and color (ΔE) were measured (n=10). Then, the specimens were immersed in 4 mL of each of the different beverages (cranberry juice; Coca-Cola; coffee or artificial saliva) during 15 min, 3x/day for 14 days and new gloss and color readings were obtained. Color change was evaluated with the ΔE formula and gloss change values were obtained by the formula: (final gloss - initial gloss). Data was submitted to two-way ANOVA followed by Tukey’s post hoc test (a=0.05). CD showed the lowest color change among resin composites. The highest ΔE values were obtained after immersion in coffee and cranberry juice. Coffee promoted the highest gloss change (worst gloss retention), followed by cranberry juice, Coca-cola and artificial saliva (p<0.05). The type of beverage significantly influenced the gloss of resin composites. Coca-cola reduced gloss of the three resin composites in a similar manner. Coffee affected the ED gloss more than that of Z350 and CD, while cranberry juice affected Z350 more than ED and CD. Saliva had a more pronounced effect on the gloss retention of CD than ED. The beverages used in this study influenced the optical surface properties of the composites studied.

scholarly journals Bleaching Agent Action on Color Stability, Surface Roughness and Microhardness of Composites Submitted to Accelerated Artificial Aging

2011 ◽  
Vol 05 (02) ◽  
pp. 143-149 ◽  
Author(s):  
Raphael Mendes Bezerra Rattacaso ◽  
Lucas de Fonseca Roberti Garcia ◽  
Fabiano Gamero Aguilar ◽  
Simonides Consani ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza
Keyword(s):  
Surface Roughness ◽  
Artificial Aging ◽  
Artificial Saliva ◽  
Color Stability ◽  
Color Reading ◽  
Bleaching Agent ◽  
Significant Difference ◽  
Knoop Microhardness ◽  
Initial Color ◽  
Daily Application

ABSTRACTObjectives: The purpose of this study was to evaluate the bleaching agent action on color stability, surface roughness and microhardness of composites (Charisma, Filtek Supreme and Heliomolar - A2) submitted to accelerated artificial aging (AAA). Methods: A Teflon matrix (12 x 2 mm) was used to fabricate 18 specimens (n=6) which, after polishing (Sof-Lex), were submitted to initial color reading (ΔE), Knoop microhardness (KHN) (50 g/15 s load) and roughness (Ra) (cut-off 0.25 mm) tests. Afterwards, the samples were submitted to AAA for 384 hours and new color, microhardness and roughness readings were performed. After this, the samples were submitted to daily application (4 weeks) of 16% Carbamide Peroxide (NiteWhite ACP) for 8 hours and kept in artificial saliva for 16 hours. New color, microhardness and roughness readings were made at the end of the cycle, and 15 days after bleaching. Results: Comparison of the ΔE means (2-way ANOVA, Bonferroni, P<.05) indicated clinically unacceptable color alteration for all composites after AAA, but without significant difference. Statistically significant increase in the KHN values after AAA was observed, but without significant alterations 15 days after bleaching. For Ra there was no statistically significant difference after AAA and 15 days after bleaching. Conclusions: The alterations promoted by the bleaching agent and AAA are material dependent. (Eur J Dent 2011;5:143-149)

Color Stability of Heat-Cured Denture Base Resins

2015 ◽  
Vol 1088 ◽  
pp. 519-525
Author(s):  
Hua Li Huang ◽  
Dan Feng ◽  
Hai Huan Gong ◽  
Ai Yang Song ◽  
Song Zhu
Keyword(s):  
Water Absorption ◽  
Red Wine ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Denture Base ◽  
Color Changes ◽  
Dental Resins ◽  
Base Resin ◽  
Storage Times

Heat-cured denture base resin is an important component in removable partial dentures and complete dentures, and has been widely used in the clinic. However, during long-term use, its appearance may be affected by varying degrees of color change, affecting the appearance and longevity of the dentures. In this study we examined the color changes and water absorption and solubility of dental base resins to investigate the color stability of four types of resin materials: New Century, Heraeus, Nissin and BASIS-HI. They were soaked in artificial saliva (as control), red wine, cola, coffee and tea separately at 37°C for 1, 4 or 12 weeks. Results are presented on which the color changes of dental base resin materials were associated with different denture base resins, soak solutions and storage times. We found that most of the dental resins became darker at prolonged immersion time. Heraeus resins showed more significant changes after soaking in red wine for 12 weeks, and its water absorption and solubility values were also greater than those of the other three types of resins. The color changes of New Century, Nissin and BASIS-HI soaked in the four solutions were relatively stable. The information obtained here will help optimize maintenance of dentures and also inform choice of denture materials.

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