Opalescence and color stability of composite resins: an in vitro longitudinal study

2021 ◽  
Author(s):  
Daniele Esteves Pepelascov ◽  
Lidiane Vizioli de Castro-Hoshino ◽  
Leandro Herculano da Silva ◽  
Ronaldo Hirata ◽  
Francielle Sato ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Color Stability ◽  
Composite Resins

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

2007 ◽  
Vol 18 (2) ◽  
pp. 119-123 ◽  
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.

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

2017 ◽  
Vol 6 (3) ◽  
pp. 2619-2625
Author(s):  
Deepika Thosre Chandhok ◽  
◽  
Jasmeet Singh Chandhok ◽  
Sanjyot Mulay ◽  
Grishmi Niswade ◽  
...  
Keyword(s):  
Surface Profile ◽  
Color Stability ◽  
Composite Resins ◽  
Surface Polishing ◽  
Effect Of Surface

scholarly journals Influence of alternative photoinitiators in composite resins: A literature review

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.

scholarly journals Color Stability of Bulk Fill Composite Resins Submitted to Coffee Staining

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.

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

2019 ◽  
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.

scholarly journals Characterization of Bis-Acryl Composite Resins for Provisional Restorations

2017 ◽  
Vol 28 (3) ◽  
pp. 354-361 ◽  
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.

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

2016 ◽  
Vol 10 (1) ◽  
pp. 431-437 ◽  
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.

scholarly journals Estudo in vitro do efeito do tempo de fotopolimerização na pigmentação de resinas compostas

2019 ◽  
Vol 8 (8) ◽  
Author(s):  
Luiz Henrique Soares Torres ◽  
Luiza Monzoli Covre ◽  
Caio Pimenteira Uchôa ◽  
Déborah Laurindo Pereira Santos ◽  
Renato Torres Augusto Neto ◽  
...  
Keyword(s):  
Color Stability ◽  
Oral Bacteria ◽  
Composite Resins ◽  
Degree Of Conversion ◽  
Dental Composite ◽  
Resin Composites ◽  
Dental Resins ◽  
Halogen Light ◽  
Light Curing

As resinas compostas fotopolimerizáveis têm tido cada vez mais indicações na odontologia restauradora devido às vantagens que apresentam. Porém variações na técnica de fotoativação, densidade de energia, intensidade da luz e tempo de irradiação podem gerar polimerização incompleta, o que pode resultar em uma resina composta com alta porosidade, pouca dureza, baixo polimento, alta capacidade de pigmentação ou efeitos tóxicos na polpa. Este estudo tem por objetivo analisar o efeito do tempo de polimerização na pigmentação extrínseca de três resinas compostas fotopolimerizáveis. Utilizando uma fonte de LED, foram confeccionados 180 espécimes de resina composta microhíbrida, nanohíbrida e nanoparticulada, com diferentes protocolos de polimerização. Os espécimes foram subdivididos em grupos de acordo com o agente pigmentante. Com o uso de um colorímetro, foram analisados quanto à mudança de cor (ΔE). Os dados foram submetidos ao teste ANOVA e Duncan (α=0,05). A resina composta microhíbrida apresentou os menores valores de ΔE em comparação à nanoparticulada e à nanohíbrida quando imersos em vinho. Quanto maior o tempo de polimerização menores valores de ΔE foram obtidos. Não somente o tempo de polimerização influencia no grau de pigmentação, mas também fatores intrínsecos às resinas compostas tais como carga, agente fotoiniciador e matriz orgânica.Descritores: Autocura de Resinas Dentárias; Materiais Dentários; Pigmentação.ReferênciasMatson MR, Matson AMFP. Avaliação do grau de conversão de resinas compostas quando ativadas por luz halógena: método convencional, alta potência e método “soft”. Rev Inst Ciênc Saúde. 2006;24(4):307-11.Delaviz Y, Finer Y, Santerre JP. Biodegradation of resin composites and adhesivesby oral bacteria and saliva: A rationale for new material designs that consider the clinical environment and treatment challenges. Dent Mater. 2014;30(1):16-32.Nahsan FPS, Ueda JK, Silva JO, Schimitt VL, Naufel FS, Formighieri LA et al. Estabilidade de cor de resina composta após imersão em café, água e solução de clorexidina. Rev Bras Pesq Saúde. 2009;11(2):13-7.Al  Kheraif  AA,  Qasim  SS,  Ramakrishnaiah  R,  Rehman  I.  Effect  of different beverages on the color stability and degree of conversion of nano and microhybrid composites. Dent Mater J. 2013;(32)2:326-31.Ceballos L, Fuentes MV, Tafalla H, Martínez A, Flores J, Rodríguez J. Curing effectiveness of resin composites at different exposure times using LED and halogen units. Med Oral Pathol Oral Cir Bucal 2009;14(1):e51-6.Rahiotis C, Patsouri K, Silikas N, Kakaboura A. Curing efficiency of high- intensity light-emitting diode (LED) devices. J Oral Sci.  2010; 52(2):187-95.Sgarbi SC, Pereira SK, Martins JMH, Oliveira MAC, Mazur RF. Degree of conversion of resin composites light activated by halogen light and led analyzed by ultraviolet spectrometry. Rev Clín Pesq Odontol. 2010;6(3):223-30.Caldarelli PG, Beltrani FC, Santos FA, Shibayama R, Hoepper  MG. Manchamento de uma resina composta e sua Relação com o efeito da intensidade da luz Emitida por aparelhos fotopolimerizadores de Lâmpada halôgena. Rev Fac Odontol Aracatuba. 2011;(32)2:44-8.Valentini F, Oliveira SGD, Guimarães GZ, Barbosa RPS, Moraes RR. Effect of surface sealant on the color stability of composite resin restorations. Braz Dent J. 2011;22(5):365-68.Freitas ABDA, Gomes HR, Guimarães FBR, Marinho VA, Barros LM. Influência do tipo de aparelho fotopolimerizador na absorção de água por restaurações de resina composta. Rev Inst Ciênc Saúde.  2008;(26)1:65-9.Porto ICCM, Soares LES, Martin AA, Cavalli V, Liporoni PCS. Influence of the photoinitiator system and light photoactivation units on the degree of conversion  of  dental  composites. Braz Oral Res. 2010;24(4):475-81.Pequeno JHP, Araújo GS, Neri JR, Bomfim AGM, Mendonça JS, Santiago SL. Efeito dos protocolos de fotoativação na dureza de uma resina composta nanoparticulada. ROBRAC. 2012;21(56):394-97.Uhl A, Mills RW, Rzanny AE, Jandt KD. Time dependence of composite shrinkage using halogen and LED light curing. Dent Mater. 2005;21(3):278-86.Eick JD, Kotha SP, Chappelow CC, Kilway KV, Giese GJ, Glaros AG et al. Properties of  silorane-based  dental resins and composites containing    a    stressreducing  monomer. Dent Mater. 2007;23(8):1011-17.Neumann MG, Schmitt CC, Ferreira GC, Correa IC. The initiating radical yields and the efficiency of polymerization for various dental photoinitiators excited by different lightcuring units. Dent Mater. 2006;22(6):576-84.Asmussen   E,  Peutzfeldt   A.   Influence   of   composition   on   rate   of polymerization contraction of light-curing resin composites. Acta Odontol Scand. 2002;60(3):146-50.Silva EH, Albuquerque RC, Lanza LD, Vieira GC, Peixoto RT, Alvim HH et al. Influence of different light sources on the conversion of composite resins. Indian J Dent Res. 2011;22(6):790-94.Souza E, Espíndola M, Diegoli NM, Kuroshima KN. Avaliação da alteração de cor de diferentes compósitos restauradores - influência de corantes usados na cavidade oral - estudo in vitro. RGO. 2006;54(1):43-6.Salvego RN, Dias RPB. Figueiredo JLG. Estabilidade de cor de resinas compostas no processo de manchamento e clareamento, Rev Dental Press Estét. 2013;10(3):54-62.Firoozmandi LM, Balducci I, Araújo MAM.  Influência da Fotopolimerização e da Cor da Resina Composta na Microdureza. Pesq Bras Odontoped Clín Integr. 2009;9(1):37-42.Anfe TEA, Agra CM, Vieira GF. Comparação de duas técnicas de fotoativação na sorção e solubilidade de resinas compostas em solução de etanol. J Biodent Biomater. 2011;1(1):61-7.Villalta P, Lu H, Okte Z, Garcia-Godoy F, Powers JM. Effects of staining and bleaching on color change of dental composite resins. J Prosthet Dent. 2006;95(2):137-42.Barghi N, Berry T, Hatton C. Evaluation intensity output of curing lights in private dental offices. J. am. dent. assoc. 1994;125(7):992-96.Santini A, Miletic V, Swift MD, Bradley M. Degree of conversion and microhardness of TPO-containing resin-based composites cured by polywave and monowave LED units. J Dent. 2012;40(7):577-84.

scholarly journals Effect of Conventional and Electronic Cigarettes Smoking on the Color Stability and Translucency of Tooth Colored Restorative Materials: An In Vitro Analysis

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1568
Author(s):  
Hamad A. Alnasser ◽  
Ahmed A. Elhejazi ◽  
Abdalrahman A. Al-Abdulaziz ◽  
Saad S. Alajlan ◽  
Syed Rashid Habib
Keyword(s):  
Cigarette Smoke ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Electronic Cigarettes ◽  
Color Stability ◽  
Composite Resins ◽  
Electronic Cigarette ◽  
Time Duration ◽  
Custom Made

This in vitro study compared the effects of conventional and electronic cigarettes on the aesthetics (color stability and translucency) of two types of composite resins: micro and nano-hybrid. Methods: A total of 120 specimens from two different composite materials Filtek Z250 XT (Nano-hybrid, 3M) and Filtek Z250 (Micro-hybrid, 3M) were divided into four groups (n = 30); shade A2 was used. The samples were exposed to conventional and electronic cigarette smoke via a custom made chamber device. The color values and measurements were recorded using a spectrophotometer before and after the exposure. The color and translucency were evaluated using the three-dimensional CIE Lab. Results: There was a significant change in the color (ΔE) and the translucency parameter (TP) in all of the specimens exposed to electronic cigarettes and conventional cigarettes. The results showed that the highest ΔE mean is for the nano-hybrid composite exposed to conventional cigarettes with 1.74 ΔE while the same material is 0.64 under the electronic cigarettes and the difference is significant with (p < 0.05). The micro-hybrid composite data showed less changes in color under both exposures with 0.85 ΔE mean under the conventional cigarette smoke and 0.48 under the electronic cigarette smoke with (p < 0.004). Conclusions: The conventional cigarette smoke has more effect on the color stability of the composite resins than electronic cigarettes. From a clinical point of view, the effect of smoke exposure on the tested specimens’ color, for the time duration to which the specimens were exposed, were moderate (ΔE < 2). The micro-hybrid composites showed better color stability as compared to the nano-hybrid composites.

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