scholarly journals Effect of Chemical Degradation on Surface Roughness and on Color Stability of Micro hybrid and Nanofilled Composites

2018 ◽  
Vol 20 (3) ◽  
pp. 167
Author(s):  
Ruchele Dias Nogueira ◽  
Rosa Maria Pereira Moisés Barbosa Andrade ◽  
Ailla Carla Rocha Acosta Lancellotti ◽  
Regina Guenka Palma-Dibb ◽  
Vinícius Rangel Geraldo-Martins
Keyword(s):  
Surface Roughness ◽  
Hybrid Composite ◽  
Orange Juice ◽  
Red Wine ◽  
Clinical Success ◽  
Artificial Saliva ◽  
Color Stability ◽  
Final Analysis ◽  
Composite Resins ◽  
Chemical Degradation

ResumoA resina composta é o material restaurador mais utilizado atualmente. Apesar de seu sucesso clínico, o material está sujeito a alterações em suas propriedades físicas, quando exposto ao meio bucal. O objetivo foi avaliar a influência da degradação química na estabilidade de cor e na rugosidade superficial de resinas micro-híbrida e nanoparticulada. Foram confeccionados 40 discos (6,0mm x 2,0mm) da resina composta micro-híbrida (Z250XT) e 40 da resina nanoparticulada (Z350XT). Após a análise da cor inicial e da rugosidade inicial, 10 discos de cada resina foram imersos em saliva artificial (Controle, pH=6,4), suco de laranja (pH= 3,4), refrigerante de limão (pH=2,9) e vinho tinto (pH=3,1), por 4 horas por dia (37ºC) durante 30 dias. Após, foram realizadas as leituras finais de cor e rugosidade. Os dados obtidos para a estabilidade de cor foram analisados pelo Teste de Kruskal-Wallis, seguido pelo Teste de Dunn (α=5%). Para a análise da rugosidade foi utilizado o Teste t para amostras pareadas (α=5%). O manchamento provocado pela saliva artificial, suco de laranja e refrigerante foi similar, mas foi estatisticamente diferente do manchamento produzido pelo vinho, em ambas as resinas testadas. O vinho produziu o mesmo grau de manchamento nas resinas micro-híbrida e nanoparticulada. Foi observado que o suco de laranja, o refrigerante e o vinho promoveram aumento da rugosidade superficial dos discos de resina. Diante disso, concluiu-se que o vinho alterou a cor de resinas compostas micro-híbrida e nanoparticulada, e que a rugosidade superficial dos discos de resina foi alterada por todas as bebidas utilizadas.Palavras chave: Resinas Compostas. Corantes. Cor.Abstract Composite resin is the most used restorative material. Despite its clinical success, it is susceptible to changes in its physical properties when exposed to the oral environment. The aim was to evaluate the influence of acidic beverages on the color stability and on the surface roughness of the nanofilled and micro hybrid composite. Forty discs (6.0mm x 2.0mm) of the micro hybrid composite (Z250XT) and 40 of the nanofilled composite (Z350XT) were manufactured. After the measurement of the initial color and the initial roughness, 10 discs of each composite were individually immersed in artificial saliva (control, pH = 6.4), orange juice (pH=3.4), lime soda (pH = 2.9) and red wine (pH = 3.1) during 4 hours per day at 37°C for 30 days. At the end of the experiment, the final analysis of color and surface roughness were performed. The data obtained for the color stability were analyzed by Kruskal-Wallis and Dunn’s test (α= 5%). For the analysis of the surface roughness, the t test for related samples was used (α= 5%). The color changes promoted by artificial saliva, orange juice and soda were similar, but they were statistically different from staining produced by wine, in both tested composites. Wine produced the same degree of staining in both composites. Orange juice, soda and red wine increased the surface roughness of the composite discs. It was concluded that red wine significantly changes the color of micro hybrid and nanofilled composites. Furthermore, all beverages increased the surface roughness of the composites tested in the study herein.Keywords: Composite Resins. Coloring Agents. Color.

scholarly journals Influence of a Bleaching Agent on the Color Stability of Indirect Composite Resins Immersed in Dyes

Ceramics ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 235-245
Author(s):  
Daniele dos Santos ◽  
Emily da Silva ◽  
Juliani Mendonça ◽  
Denis Cetrangolo ◽  
Fernanda Caxias ◽  
...  
Keyword(s):  
Red Wine ◽  
Artificial Saliva ◽  
Color Stability ◽  
Composite Resins ◽  
Bleaching Agent ◽  
Initial State ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Indirect Composite ◽  
Bleaching Action

This study aimed to evaluate the effect of a bleaching agent on the color of extrinsically pigmented indirect composite resins. Samples of five resins (Adoro, Resilab, Cristobal, Sinfony, Epricord) were manufactured and divided into five groups: red wine, coffee, orange juice, Coca-Cola, and artificial saliva (control). The stained samples were immersed in a 38% hydrogen peroxide solution for 30 min per week, over three weeks. Color readings were performed at the initial state (L0), after 21 days of dye immersion (ΔE1, L1), and after 7 (ΔE2, L2), 14 (ΔE3, L3), and 21 days (ΔE4, L4) of bleach immersion. Data were subjected to ANOVA and Tukey’s honestly significant difference (HSD) test (α = 0.05). The color alteration was greater in ΔE1, regardless of color solution, indicating extrinsic pigmentation. The Resilab group exhibited greater ΔE1 values than the other resins. The bleaching agent promoted bleaching action on the surfaces of the materials studied, removing the previously impregnated pigments.

scholarly journals Effects of Commonly Consumed Beverages on Surface Roughness and Color Stability of the Nano, Microhybrid and Hybrid Composite Resins: An in vitro Study

2013 ◽  
Vol 14 (4) ◽  
pp. 718-723 ◽  
Author(s):  
P Sarveshwar Reddy ◽  
KL Sunil Tejaswi ◽  
Suneeth Shetty ◽  
BM Annapoorna ◽  
Sudarshan C Pujari ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Hybrid Composite ◽  
Color Change ◽  
Resin Composite ◽  
Color Stability ◽  
Composite Resins ◽  
Resin Composites ◽  
Hybrid Resin ◽  
Color Changes

ABSTRACT Background Consumption of certain beverages may affect the esthetic and physical properties of the resin composite, thereby undermining the quality of restorations. Aim To analyze the effect of three beverages (cola, coffee, tea) on color stability and surface roughness of three different types of resin composites at various time intervals in vitro. Materials and methods Nano, microhybrid and hybrid resin composites were used. Each material was randomly divided into four equal subgroups of 10 samples each according to the beverages used (cola, coffee, tea, distilled water). The samples were immersed in each beverage for 1, 15 and 30 days. Surface roughness and color changes measurements were noted at the baseline—the first, fifteenth and thirteenth day. Results It was found that nanoresin composite followed by microhybrid and hybrid showed least surface roughness and color change. The Coke beverage subgroup showed more surface roughness and the subgroup coffee has shown more color changes with respect to other subgroups. Conclusion All specimens showed discoloration after completion of the test period which was visually perceptible and clinically unacceptable. At the end of 30th day, among the materials, nanofilled composite resin showed comparatively less surface roughness and color change than microhybrid and hybrid composite resins. How to cite this article Reddy PS, Tejaswi KLS, Shetty S, Annapoorna BM, Pujari SC, Thippeswamy HM. Effects of Commonly Consumed Beverages on Surface Roughness and Color Stability of the Nano, Microhybrid and Hybrid Composite Resins: An in vitro Study. J Contemp Dent Pract 2013;14(4): 718-723.

scholarly journals Bioadhesive Curcumin-Mediated Photodynamic Inactivation and Its Potential to Cause Undesirable Effects on Dental and Restorative Surfaces

Pharmaceutics ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1458
Author(s):  
Bárbara Donadon Reina ◽  
Carolina Santezi Neto ◽  
Patrícia Petromilli Nordi Sasso Garcia ◽  
Marlus Chorilli ◽  
Giovana Maria Fioramonti Calixto ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Liquid Crystal ◽  
Tooth Enamel ◽  
Dental Enamel ◽  
Color Stability ◽  
Composite Resins ◽  
Photodynamic Inactivation ◽  
Restorative Material ◽  
Negative Effects ◽  
Restorative Materials

Curcumin-mediated Photodynamic Inactivation (PDI) has shown great potential to disinfect specific sites on tooth enamel but may involve contact with restorative materials. Thus, before use in dentistry, it is necessary to investigate whether the PDI protocol causes undesirable changes in the surfaces of aesthetic restorative materials and dental enamel. This study investigated the effect of PDI mediated by curcumin (CUR) in a liquid crystal precursor system on color stability (ΔE), surface roughness (Ra), and microhardness (kgf) of three different composite resins and bovine dental enamel specimens. The microhardness and roughness readings were performed 60 days after the treatments while the color readings were performed immediately, 24, 48, and 72 h, 7, 14, 21, 30, and 60 days after the treatments. Results showed that CUR mediated-PDI does not seem to have the potential to promote any esthetic or mechanical changes to the surface of tooth enamel and can be applied safely in clinical practice. However, the results on color, roughness, and hardness obtained for composite resins show that some negative effects can be produced, depending on the type of restorative material; more experiments must be performed with different formulations and, perhaps, with lower concentrations of CUR.

scholarly journals Evaluation of the color stability and surface roughness of dual-cure, bulk-fill composites

2021 ◽  
Vol 11 (Suppl. 1) ◽  
pp. 266-273
Author(s):  
Zehra Şivgan Güner ◽  
Behiye Bolgül ◽  
Tacettin İnandı
Keyword(s):  
Surface Roughness ◽  
Color Stability ◽  
Pediatric Dentistry ◽  
Ease Of Use ◽  
Composite Resins ◽  
Distilled Water ◽  
Significant Difference ◽  
Cherry Juice ◽  
Experimental Group ◽  
Composite Samples

Aim: In recent years, tooth-colored, dual-cure, bulk-fill composite resins, which have attracted attention for their ease of use, constitute one of the latest developments in pediatric dentistry applications. This study aimed to evaluate the color stability and surface roughness properties of three different dual-cure, bulk-fill materials and one light-cure, bulk-fill composite material used in pediatric dentistry. Methodology: In this study, three different dual-cure, bulk-fill composites (Fill-Up, HyperFIL, Cention-N) and one light-polymerized bulk-fill composite (Reveal HD) were used. A total of 70 samples were obtained for surface roughness testing. The surface roughness testing was performed with a Hysitron TI 950 Triboindenter device. A total of 105 samples were obtained for the evaluation of color stability. Cherry juice, iced tea, and distilled water were used as solutions. Initial and final color measurements were made using a spectrophotometer. The color differences between measurements were recorded according to the CIEDE 2000 system. Results: The least surface roughness among the composite groups was observed in the light polymerized Cention-N composite samples in the experimental group. In the Fill-Up and Cention-N composite groups in the experimental group, the surface roughness of the samples left to self-polymerization and the samples polymerized with light showed a statistically significant difference (p < 0.05). Among the composite groups, the highest amount of coloring was observed in the Fill-Up composite samples, which were left to self-polymerization and kept in cherry juice in the experimental group. The least coloration among the composite groups was observed in the Cention-N composite samples polymerized with light and kept in distilled water. Conclusion: Based on this information, a decrease in surface roughness and an increase in color stability can be expected due to self-polymerization and the light polymerization of dual-cured, bulk-fill composites.   How to cite this article: Şivgan Güner Z, Bolgül B, İnandı T. Evaluation of the color stability and surface roughness of dual-cure, bulk-fill composites. Int Dent Res 2021;11(Suppl.1):266-273. https://doi.org/10.5577/intdentres.2021.vol11.suppl.39   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

Efficacy of polishing kits on the surface roughness and color stability of different composite resins

2017 ◽  
Vol 20 (5) ◽  
pp. 557 ◽  
Author(s):  
H Gumus ◽  
H Kocaagaoglu ◽  
T Aslan ◽  
A Gürbulak ◽  
H Albayrak ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Color Stability ◽  
Composite Resins

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 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)

Surface roughness and color stability of various composite resins

2007 ◽  
Vol 32 (6) ◽  
pp. 542 ◽  
Author(s):  
Sung-Yi Lee ◽  
Hyeon-Cheol Kim ◽  
Bock Hur ◽  
Jeong-Kil Park
Keyword(s):  
Surface Roughness ◽  
Color Stability ◽  
Composite Resins

scholarly journals Color stability evaluation of micro hybrid composite resins submitted to accelerated artificial aging

2015 ◽  
Vol 21 (4) ◽  
pp. 227
Author(s):  
Gisseli Bertozzi Ávila ◽  
Sergio Candido Dias ◽  
Mariana Lima da Costa Valente ◽  
José Augusto Marcondes Agnelli ◽  
Andréa Candido dos Reis
Keyword(s):  
Hybrid Composite ◽  
Artificial Aging ◽  
Color Change ◽  
Dental Materials ◽  
Color Stability ◽  
Composite Resins ◽  
Color Analysis ◽  
Oral Rehabilitation ◽  
Surface Degradation ◽  
O 15

Objective: The aesthetics of dental materials is extremely important for the success of oral rehabilitation. Thus, in the present study we evaluated the color stability and the surface degradation of three micro hybrid composite resins after accelerated artificial aging process (AAA). Methods: Were prepared 24 specimens (n=8) for each material: Solidex, Artglass and Cesead, dimensions of Ø 15 mm by 2 mm in thickness. The samples were subjected to color analysis, before and after AAA, in a spectrophotometer according to the CIE L*a*b* parameters, and a sample of each material, was selected for morphological evaluation under scanning electron microscopy (SEM). The data were submitted to one-way ANOVA and Tukey test (α=0.05). Results: Artglass showed higher stability regarding the presence of red and yellow (p<0.05) when subjected to the AAA and fewer of these pigments (p<0.05) when compared to the Cesead and Solidex, which showed the highest luminance stability (p<0.05). ΔE Cesead was the most unstable (p<0.05). All resins analyzed by SEM showed superficial degradation when submitted to the AAA, mainly in resin Cesead. Conclusion: All materials analyzed demonstrate color change and surface degradation, Cesead resin showed the worse results.

scholarly journals Effect of different finishing and polishing techniques on the surface roughness of microfilled, hybrid and packable composite resins

2005 ◽  
Vol 16 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Silvia Helena Barbosa ◽  
Régia Luzia Zanata ◽  
Maria Fidela de Lima Navarro ◽  
Osvaldo Benoni Nunes
Keyword(s):  
Surface Roughness ◽  
Aluminum Oxide ◽  
Hybrid Composite ◽  
Composite Resin ◽  
Complete Sequence ◽  
Composite Resins ◽  
Average Surface Roughness ◽  
Surface Smoothness ◽  
Average Surface ◽  
System Data

This study examined the average surface roughness (Ra, µm) of 2 microfilled (Durafill and Perfection), 1 hybrid (Filtek Z250) and 2 packable composite resins (Surefil and Fill Magic), before (baseline) and after eight different finishing and polishing treatments. The surface roughness was assessed using a profilometer. Ten specimens of each composite resin were randomly subjected to one of the following finishing/polishing techniques: A - carbide burs; B - fine/extrafine diamond burs; C - Sof-Lex aluminum oxide discs; D - Super-Snap aluminum oxide discs; E - rubber polishing points + fine/extrafine polishing pastes; F - diamond burs + rubber polishing points + fine/extrafine polishing pastes; G - diamond burs + Sof-Lex system; H - diamond burs + Super-Snap system. Data were analyzed using two-way ANOVA and Tukey's HSD test. Significant differences (p<0.05) were detected among both the resins and the finishing/polishing techniques. For all resins, the use of diamond burs resulted in the greatest surface roughness (Ra: 0.69 to 1.44 µm). The lowest Ra means were obtained for the specimens treated with Sof-Lex discs (Ra: 0.11 to 0.25 µm). The Ra values of Durafill were lower than those of Perfection and Filtek Z250, and these in turn had lower Ra than the packable composite resins. Overall, the smoothest surfaces were obtained with the use the complete sequence of Sof-Lex discs. In areas that could not be reached by the aluminum oxide discs, the carbide burs and the association between rubber points and polishing pastes produced satisfactory surface smoothness for the packable and hybrid composite resins, respectively.

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