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Abdollahpour S, Estedlal T, Chiniforush N, Rafeie N, Nikparto N, Abbasi M, Ranjbar Omrani L. Effect of Different Bleaching Methods on Monomer Release from Aged Microhybrid and Nanohybrid Resin Composites. Int J Dent 2023; 2023:2773879. [PMID: 37216177 PMCID: PMC10198759 DOI: 10.1155/2023/2773879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 05/24/2023] Open
Abstract
Introduction Recently, the application of laser-assisted bleaching has increased in dental practice. This method might affect the physical and chemical properties of resin composite and its monomer release. This study aimed to evaluate the effect of in-office, at-home, and laser-assisted bleaching on the monomer release (bisphenol A diglycidyl dimethacrylate (BisGMA), triethylene glycol dimethacrylate (TEGDMA), and urethane dimethacrylate (UDMA)) from aged nanohybrid (Grandio, Voco) and microhybrid (Clearfil AP-X Esthetics, Kuraray) resin composites. Methods Thirty-two samples of each composite were prepared. The samples underwent aging procedure with UV light at 65°C for 100 hr. The samples were divided into 4 groups: OB: conventional in-office bleaching with Opalescence Boost PF 40% gel; HB: home bleaching with Opalescence PF 15% gel; LB: bleaching with JW Power bleaching gel followed by diode laser application; and C: control group without bleaching. Then, the samples were immersed in a solution containing 75% ethanol + 25% distilled water. The medium was renewed after 8, 16, 24 hr, and 7 days and was analyzed using high-performance liquid chromatography method to evaluate the monomer release. The data were analyzed using Two-way ANOVA and Post hoc Tukey test. Results The bleaching method had no effect on TEGDMA and BisGMA release in both composites while it affected UDMA release in nanohybrid composite; UDMA release was significantly higher in LB compared to control and also higher in OB and LB compared to HB. No difference was observed in the microhybrid composite in this regard. Conclusion Laser-assisted bleaching did not affect monomer release from microhybrid composite while it increased UDMA release from nanohybrid composite. The bleaching method had no effect on TEGDMA and BisGMA release.
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Affiliation(s)
- Siavash Abdollahpour
- Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Tarane Estedlal
- Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasim Chiniforush
- Department of Surgical Science and Integrated Diagnosis, University of Genoa, Genoa, Italy
| | - Niyousha Rafeie
- Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nariman Nikparto
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Abbasi
- Restorative Dentistry Department, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Ladan Ranjbar Omrani
- Restorative Dentistry Department, Dental Research Center, Dentistry Research Institute, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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Bragança GF, Ferreira Soares PB, Borges JS, Fernandes Vilela AB, Santos Filho PC, Soares CJ. Effects of Charcoal Toothpaste on the Surface Roughness, Color Stability, and Marginal Staining of Resin Composites. Oper Dent 2022; 47:214-224. [PMID: 35584330 DOI: 10.2341/20-046-l] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVE This study was designed to evaluate the effects of charcoal toothpaste on the surface roughness, color stability, and marginal staining of resin composite restorations. METHODS A total of 100 bovine incisors was collected. The crowns were sectioned and randomly divided into 10 groups (n=10) according to two study factors: toothpaste groups and nanoparticle resin composite groups. Five toothpastes-Bianco Pro Clinical (Bianco Oral Care, Uberlândia, MG, Brazil) - Control group; Bianco Carbon (Bianco Oral Care); NAT, Natural Suavetex Carvão Ativado (Suavetex, Uberlândia, MG, Brazil); Nano Action Black Be Emotion (Polishop, Jundiaí, SP, Brazil); and BIW, Black is White (Curaprox, Curaden AG, Kriens, Switzerland)-and two resin composites-Z350XT, Filtek Z350XT (3M Oral Care) and Vittra, Vittra APS (FGM, Joinville, SC, Brazil)-were used. Circular cavities with a diameter of 4 mm and a depth of 1 mm were prepared on the buccal face of the tooth crowns and restored with resin composites. The specimens were subjected to three months of simulated toothbrushing. The surface roughness (right angle [Ra], in micrometers [μm]) of the resin composites was measured before and after toothbrushing in five areas per specimen. The resin composite color and luminosity changes (ΔE and ΔL, respectively) were measured using reflectance spectroscopy (Vita EasyShade). Macro photographs were taken before and after toothbrushing to qualitatively analyze the marginal staining (MSt) of the resin composite restorations. Scanning electron microscopy (SEM) was performed before and after the simulated toothbrushing. Ra data were analyzed using two-way analysis of variance with repeated measures and the Tukey HSD test; MSt was analyzed using Kruskal-Wallis and Dunn tests (α=0.05), and the resin composite color change was analyzed using the clinically unacceptable level of ΔE > 3.3. RESULTS Simulated brushing increased Ra irrespective of the resin composite or toothpaste used. No significant differences were found in Ra between the control group and all groups on which the charcoal toothpastes were tested. A clinically unacceptable level of resin composite color change (ΔE>3.3) was found after the use of most charcoal toothpastes. Use of Bianco Carbon resulted in marginal staining similar to that of the control group and was lower than that of the other charcoal toothpastes. Vittra brushed with black toothpaste showed the highest marginal staining. CONCLUSION Use of charcoal toothpaste resulted in Ra values of resin composites similar to those found with conventional toothpastes. Charcoal toothpaste generally resulted in clinical resin composite color changes (ΔE). All charcoal toothpastes, except Bianco Carbon, caused marginal staining of the resin composite restorations.
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Affiliation(s)
- G F Bragança
- Gabriel Felipe de Bragança, DDS, MSc, PhD student, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas, Gerais, Brazil
| | - P B Ferreira Soares
- Priscilla Barbosa Ferreira Soares, DDS, MSc, PhD, professor, Department of Periodontology and Implantology, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas, Gerais, Brazil
| | - J Simeão Borges
- Juliana Simeão Borges, DDS, PhD student, Department of Periodontology and Implantology, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - A B Fernandes Vilela
- Andomar Bruno Fernandes Vilela, DDS, MSc, PhD student, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas, Gerais, Brazil
| | - P C Santos Filho
- Paulo Cesar Santos Filho, professor, Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - C J Soares
- *Carlos José Soares, DDS, MS, PhD, School of Dentistry, Federal University of Uberlândia, Uberlandia, Minas Gerais Brazil
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Gamal W, Safwat A, Abdou A. Effect of Coloring Beverages on Color Stability of Single Shade Restorative Material: An In Vitro Study. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.7679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Color mismatch between tooth structure and restoration is a common reason for restoration replacement. This is due, in part, to the diverse chemical structure of both substrates, which display a different staining potential resulting in a significant color mismatch.
AIM: The aim of the study was to evaluates the color change of single shade resin composite and compare it to fibrous-filled resin composite (FRc) after storage in coloring beverages.
METHODS: Trapezoidal Class V cavities were prepared on the buccal and lingual surfaces of 30 premolars. Cavities on the buccal surface were restored with Omnichroma (ON) and palatal surface with FRc. Specimens were stored on water, tea, and coffee solutions for 24 h and 72 h. The color change was measured after each immersion time and statistically analyzed using three-way analysis of variance (ANOVA) (α = 0.05).
RESULTS: Three-way ANOVA showed that different materials had a significant effect on both ΔL and Δa (p < 0.001). For both materials, ON in coffee showed the highest Δb values when compared to FRc for the same period. No difference between ON and FRc when stored in tea for 24 h and 72 h.
CONCLUSION: Structural color property of ON can enhance the color perception of restoration to compensate for any color change after consuming coloring food and beverages.
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Balhaddad AA, Garcia IM, Maktabi H, Ibrahim MS, Alkhubaizi Q, Strassler H, Collares FM, Melo MAS. Errors in light-emitting diodes positioning when curing bulk fill and incremental composites: impact on properties after aging. Restor Dent Endod 2021; 46:e51. [PMID: 34909415 PMCID: PMC8636082 DOI: 10.5395/rde.2021.46.e51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 11/29/2022] Open
Abstract
Objectives This study aimed to evaluate the effect of improper positioning single-peak and multi-peak lights on color change, microhardness of bottom and top, and surface topography of bulk fill and incremental composites after artificial aging for 1 year. Materials and Methods Bulk fill and incremental composites were cured using multi-peak and single-peak light-emitting diode (LED) following 4 clinical conditions: (1) optimal condition (no angulation or tip displacement), (2) tip-displacement (2 mm), (3) slight tip angulation (α = 20°) and (4) moderate tip angulation (α = 35°). After 1-year of water aging, the specimens were analyzed for color changes (ΔE), Vickers hardness, surface topography (Ra, Rt, and Rv), and scanning electron microscopy. Results For samples cured by single-peak LED, the improper positioning significantly increases the color change compared to the optimal position regardless of the type of composite (p < 0.001). For multi-peak LED, the type of resin composite and the curing condition displayed a significant effect on ΔE (p < 0.001). For both LEDs, the Vickers hardness and bottom/top ratio of Vickers hardness were affected by the type of composite and the curing condition (p < 0.01). Conclusions The bulk fill composite presented greater resistance to wear, higher color stability, and better microhardness than the incremental composite when subjected to improper curing. The multi-peak LED improves curing under improper conditions compared to single-peak LED. Prevention of errors when curing composites requires the attention of all personnel involved in the patient's care once the clinical relevance of the appropriate polymerization reflects on reliable long-term outcomes.
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Affiliation(s)
- Abdulrahman A Balhaddad
- Ph.D Program Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Isadora M Garcia
- Ph.D Program Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Haifa Maktabi
- Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Maria Salem Ibrahim
- Ph.D Program Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Qoot Alkhubaizi
- Advanced Education in General Dentistry Division, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Howard Strassler
- Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA
| | - Fabrício M Collares
- Department of Dental Materials, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mary Anne S Melo
- Ph.D Program Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD, USA.,Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA
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Influence of the photoactivation distance on the color and whiteness stability of resin-based composite after bleaching and aging. J Dent 2020; 99:103408. [DOI: 10.1016/j.jdent.2020.103408] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 06/01/2020] [Accepted: 06/07/2020] [Indexed: 11/24/2022] Open
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Brooksbank A, Owens BM, Phebus JG, Blen BJ, Wasson W. Surface Sealant Effect on the Color Stability of a Composite Resin Following Ultraviolet Light Artificial Aging. Oper Dent 2018; 44:322-330. [PMID: 30444695 DOI: 10.2341/18-053-l] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To examine how exposure to accelerated artificial aging (AAA) stimuli (ultraviolet [UV] light) affects the color stability of a composite resin following surface sealant (SS) application. METHODS AND MATERIALS A total of 30 cylindrical composite resin (Esthet-X) discs were prepared using Teflon-coated rings. The treatment groups, defined by different SS (Seal-N-Sine, PermaSeal, OptiGuard, Biscover LV, and DuraFinish) use, were divided into five groups of six discs each. The discs were subjected to baseline color measurements followed by measurements after surface sealant application (specular included component [SCI] and specular excluded component [SCE]) using a spectrophotometer. Three measurements (SCI and SCE) were performed for a total of 18 readings (test surface) per specimen group. All specimens were then exposed to a UV light source for a total of 382 hours. Color readings of the specimens were again recorded for each group. Quantitative color measurements were executed using Commission Internationale de l'Eclairage L*a*b* calculations. RESULTS Baseline color measurements of the composite resin discs, following the AAA exposure protocol, revealed no significant differences. A comparison of the composite resin discs before and after SS application (without UV light exposure) showed statistically significant differences using both SCI and SCE measurement criteria. Although significant differences were encountered between the ΔL*, Δa*, Δb*, and ΔE parameters, all specimens (groups) were within the clinically acceptable range (1.0<ΔE≤ 3.3). Again, statistically significant differences were noted (ΔL*, Δa*, Δb*, and ΔE parameters) for all specimen groups receiving SS application, utilizing both SCI and SCE measurements, following exposure to UV light. All groups were within the clinically acceptable range (1.0<ΔE≤ 3.3), except the Durafinish group. The Durafinish SS group experienced significantly greater (p<0.001) overall color change (SCI and SCE) following UV light exposure. An intergroup comparison following UV exposure revealed that the Permaseal, OptiGuard, and Seal-n-Shine SS groups displayed the least amount of color change statistically but not necessarily always perceptibly significant, while the Durafinish group exhibited the greatest color change statistically and perceptibly. CONCLUSIONS The color stability of a composite resin, including the addition of most SSs, was not affected perceptibly by UV light exposure.
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Evaluation of physical properties of a nanocomposite after aging, bleaching and staining. J Appl Biomater Funct Mater 2016; 14:e256-65. [PMID: 27311426 DOI: 10.5301/jabfm.5000294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2016] [Indexed: 11/20/2022] Open
Abstract
PURPOSE The objective of the in vitro study was to assess the effect accelerated artificial aging, bleaching agents and coffee staining on the color, gloss, roughness and microhardness of a nanocomposite. MATERIALS AND METHODS 120 (7 × 2 mm) were prepared and randomly divided into 2 groups (n = 60) depending on the aging. Each group was further subdivided into 6 subgroups (n = 10) according to the bleaching and staining as follows: 10% carbamide peroxide (10% CP), 10% CP + staining, 35% hydrogen peroxide (35% HP), 35% HP + staining, without bleaching treatment (WB) and WB + staining. Scanning electron microscopy was performed for qualitative analysis of the resin surface. Data were submitted to 3-way analysis of variance (ANOVA) and Tukey's test for multiple comparisons. As for ∆E, multiple comparisons were performed by using Tukey's and Dunnett's tests (α = 0.05). RESULTS The bleaching reduced significantly the microhardness of the nanocomposite in without aging groups. All physical properties were found to be negatively changed after the aging process, with bleaching treatment with 10% CP increasing significantly the roughness and loss of gloss compared to the 35% HP. Staining reduced microhardness of both with and without aging nanocomposite as well as the color of the former (E>25), a significantly different result compared to controls. CONCLUSIONS The bleaching reduced the microhardness of the nanocomposite, whereas the aging process changed all the properties studied. The bleaching favored extrinsic staining of the with aging nanocomposite.
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Gouveia THN, Públio JDC, Ambrosano GMB, Paulillo LAMS, Aguiar FHB, Lima DANL. Effect of at-home bleaching with different thickeners and aging on physical properties of a nanocomposite. Eur J Dent 2016; 10:82-91. [PMID: 27011745 PMCID: PMC4784160 DOI: 10.4103/1305-7456.175683] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objective: To evaluate the influence of 16% carbamide peroxide (CP) containing different thickeners on the physical characteristics of a nanocomposite resin submitted or not to accelerated artificial aging (AAA). Materials and Methods: One hundred samples were randomly distributed into two groups (n = 50) according to AAA. Each group was divided into 5 subgroups (n = 10) depending on the bleaching/thickener treatment: CP + carbopol, CP + natrosol, carbopol, natrosol, and no treatment (control). The physical properties tested were color (ΔE), gloss (GU), mean roughness (Ra), and Knoop microhardness (KHN). The resin surface was performed with atomic force microscopy (AFM). Statistical Analysis: The color (variable Δ E) was assessed with two-way analysis of variance (ANOVA) and additionally with Tukey's and Dunnett's tests, the roughness values were submitted to Kruskal–Wallis, Dunn's, and Mann–Whitney's tests. Data on gloss and KHN were submitted to two-way ANOVA and Tukey's test (α = 0.05). Results: Among the physical properties evaluated, CP + carbopol promoted a reduction in composite microhardness only, thus differing statistically from the controls. As for CP + natrosol, such a change was not observed. The aging process reduced all the physical properties, thus differing statistically from the nonaging group. CP + carbopol increased the roughness and decreased the gloss of aged resins, whereas natrosol reduced gloss only, which differed statistically from the controls. Conclusions: AFM showed evidence of the loss of organic matrix and exposure to load particles in the aged samples. Therefore, the replacement of carbopol with natrosol provided maintenance of the composite microhardness following bleaching. The aging process reduced the physical properties evaluated, and some changes were enhanced by the application of bleaching.
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Affiliation(s)
- Thayla Hellen Nunes Gouveia
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, FOP/Unicamp, Piracicaba, SP, Brazil
| | - Juliana do Carmo Públio
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, FOP/Unicamp, Piracicaba, SP, Brazil
| | - Glaucia Maria Bovi Ambrosano
- Department of Social Dentistry/Statistics, Piracicaba Dental School, University of Campinas, FOP/Unicamp, Piracicaba, SP, Brazil
| | | | - Flávio Henrique Baggio Aguiar
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, FOP/Unicamp, Piracicaba, SP, Brazil
| | - Débora Alves Nunes Leite Lima
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, FOP/Unicamp, Piracicaba, SP, Brazil
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Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis. Sci Rep 2015; 5:14638. [PMID: 26450008 PMCID: PMC4598812 DOI: 10.1038/srep14638] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 09/02/2015] [Indexed: 11/11/2022] Open
Abstract
Colour changes in Gradia Direct™ composite after immersion in tea, coffee, red wine, Coca-Cola, Colgate mouthwash, and distilled water were evaluated using principal component analysis (PCA) and the CIELAB colour coordinates. The reflection spectra of the composites were used as input data for the PCA. The output data (scores and loadings) provided information about the magnitude and origin of the surface reflection changes after exposure to the staining solutions. The reflection spectra of the stained samples generally exhibited lower reflection in the blue spectral range, which was manifested in the lower content of the blue shade for the samples. Both analyses demonstrated the high staining abilities of tea, coffee, and red wine, which produced total colour changes of 4.31, 6.61, and 6.22, respectively, according to the CIELAB analysis. PCA revealed subtle changes in the reflection spectra of composites immersed in Coca-Cola, demonstrating Coca-Cola’s ability to stain the composite to a small degree.
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Tekçe N, Tuncer S, Demirci M, Serim ME, Baydemir C. The effect of different drinks on the color stability of different restorative materials after one month. Restor Dent Endod 2015; 40:255-61. [PMID: 26587410 PMCID: PMC4650520 DOI: 10.5395/rde.2015.40.4.255] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 06/21/2015] [Indexed: 11/14/2022] Open
Abstract
Objectives The aim of this study was to evaluate the effect of three different drinks on the color parameters of four different restorative materials. Materials and Methods Three different composites (Filtek Ultimate Universal Restorative, Filtek Ultimate Flowable, and Filtek Silorane, 3M ESPE) and a polyacid-modified composite resin material (Dyract XP, Dentsply DeTrey GmbH) were evaluated. Eighty-four disc-shaped specimens of 8 mm in diameter and 2 mm in thickness were prepared (n = 21 each). Color coordinates (L*a*b*, ΔL*, Δa*, Δb*, and ΔE*) were measured using a VİTA Easyshade Compact (VİTA Zahnfabrik) after 24 hr of storage (baseline) and after 30 day of storage in three different beverages of black tea, Coca cola, or water (control) (n = 7). In each beverage, the specimens were stored three times a day, one hr each, for 30 day. The color changes (ΔE) were calculated and were analyzed by Kruskal-Wallis and Dunn multiple comparison test. Results The color difference (ΔE*) of the resin materials ranged between 1.31 and 15.28 after 30 day of immersion in the staining solutions. Dyract XP in Coca cola (15.28 ± 2.61) and black tea (12.22 ± 2.73) showed the highest mean ΔE* value after 30 day, followed by Filtek Ultimate Universal Restorative (5.99 ± 1.25) and Filtek Ultimate Flowable (4.71 ± 1.40) in black tea (p < 0.05). Conclusions The compomers displayed unacceptable color changes at the end of 30 day in all beverages. Among resin composites, the silorane based composite exhibited relatively good color stability than the others. Filtek Ultimate Universal Restorative and Filtek Flowable showed similar color changes in all beverages.
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Affiliation(s)
- Neslihan Tekçe
- Department of Restorative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey
| | - Safa Tuncer
- Department of Conservative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Mustafa Demirci
- Department of Conservative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Merve Efe Serim
- Department of Restorative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey
| | - Canan Baydemir
- Department of Biostatistics and Medical Informatics, University of Kocaeli, Kocaeli, Turkey
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Sabatini C. Color Stability Behavior of Methacrylate-based Resin Composites Polymerized with Light-emitting Diodes and Quartz-Tungsten-Halogen. Oper Dent 2015; 40:271-81. [DOI: 10.2341/14-080-l] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Despite significant developments in improving the optical properties of resin composite materials, their color stability remains a challenge. This study aimed to evaluate the shade stability of light-polymerized, methacrylate-based resin composites with different filler particle composition (microfill, minifill, nanohybrids, and microhybrids) polymerized with quartz-tungsten-halogen (QTH) and light-emitting diodes (LED).
Methods and Materials
Composite discs were fabricated from Tetric EvoCeram, Premise, Artiste, and Beautifil II (nanohybrids); Filtek Supreme Plus and Vit-l-escence (microhybrids); Heliomolar (microfill); and Estelite Sigma Quick (minifill) using a Teflon mold. The specimens were irradiated either with QTH (Elipar 2500; 600 mW/cm2) for 40 seconds or with LED (Bluephase G2; 1200 mW/cm2) for 20 seconds. Color parameters were measured with a colorimeter before and after polymerization and at 24 hours, one week, one month, and three months. Color change was calculated among the different storage periods.
Results
There was a significant effect of the composite, time, and their interaction (p<0.001) but no effect of the polymerization unit on the color stability. Color changes immediately after polymerization and at 24 hours (4.22 and 3.88 for LED; and 4.08 and 3.82 for QTH) were not significantly different from each other but were both significantly higher than changes after one week (0.96 and 0.78), one month (1.12 and 1.02), and three months (1.27 and 1.11) for LED and QTH, respectively (p<0.001).
Conclusions
Color changes were observed for all the materials that were dependent on the type of composite but not on the polymerization unit. These color shifts took place primarily immediately after polymerization and after 24 hours and were additive in nature.
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Affiliation(s)
- C Sabatini
- Camila Sabatini, DDS, MS, University at Buffalo, Restorative Dentistry, Buffalo, NY, USA
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De Oliveira ALBM, Botta AC, Campos JÁDB, Garcia PPNS. Influence of light curing units and fluoride mouthrinse on morphological surface and color stability of a nanofilled composite resin. Microsc Res Tech 2014; 77:941-6. [DOI: 10.1002/jemt.22421] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/31/2014] [Accepted: 07/31/2014] [Indexed: 11/08/2022]
Affiliation(s)
| | - Ana Carolina Botta
- Department of General Dentistry; Stony Brook School of Dental Medicine; New York
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Svizero NDR, Góes ARCGD, Bueno TDL, Di Hipólito V, Wang L, D'Alpino PHP. Micro-sized erosions in a nanofilled composite after repeated acidic beverage exposures: consequences of clusters dislodgments. J Appl Oral Sci 2014; 22:373-81. [PMID: 25004054 PMCID: PMC4245748 DOI: 10.1590/1678-775720130658] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 05/10/2014] [Indexed: 11/22/2022] Open
Abstract
Objective To evaluate the hardness (KHN), color stability (DE), and superficial
micromorphology of two categories of composites after immersion in either
distilled water or grape juice for up to 45 days. Material and Methods Cylindrical specimens (6 mm diameter x 2 mm thick) were obtained according to the
factors: composite [Opallis (FGM) and Filtek Z350XT (3M ESPE)]; immersion solution
(distilled water and grape juice); and evaluation time: 24 h and 7, 14, 21, 28,
and 45 days. After photoactivation, the specimens were stored at 37ºC for 24 h.
KHN (50 g/15 s) and ΔE were then repeatedly assessed according to the immersion
solutions. Data were analyzed (three-way ANOVA/Tukey's test). Scanning electron
microscopy (SEM) topographic analysis was also performed. Results In general, KHN of both composites reduced after 24 h, irrespective of the
immersion solution and time. A significantly lower KHN was noted for Opallis
compared with Filtek Z350XT in all parameters. An increase in ΔE over time was
noted for both composites, irrespective of the immersion solution. Significantly
higher ΔE was noted for Filtek Z350XT immersed in grape juice compared with
Opallis, regardless of the evaluation time. The grape juice caused significantly
higher DE compared with water in all periods. SEM analysis showed eroded areas for
Filtek Z350XT but not for Opallis. Conclusions The compositions and immersion solutions influence the composite hardness and the
color stability. In spite of the higher hardness, the nanofilled composite is more
susceptible to color change than the microhybrid when immersed in an acidic dyed
solution.
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Affiliation(s)
- Nádia da Rocha Svizero
- Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, SP, Brazil
| | - Adriana Regina Cruz Grando de Góes
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Tamires de Luccas Bueno
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Vinicius Di Hipólito
- Biomaterials Research Group, Universidade Anhanguera de São Paulo, São Paulo, SP, Brazil
| | - Linda Wang
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Oliveira DCRSD, Souza-Júnior EJ, Prieto LT, Coppini EK, Maia RR, Paulillo LAMS. Color Stability and Polymerization Behavior of Direct Esthetic Restorations. J ESTHET RESTOR DENT 2014; 26:288-95. [DOI: 10.1111/jerd.12113] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Eduardo José Souza-Júnior
- Restorative Dentistry Department; Piracicaba Dental School - State University of Campinas; 901 Limeira Ave Areião, Piracicaba 13414-903 SP Brazil
| | - Lúcia Trazzi Prieto
- Restorative Dentistry Department; Piracicaba Dental School - State University of Campinas; 901 Limeira Ave Areião, Piracicaba 13414-903 SP Brazil
| | - Erick Kamiya Coppini
- Restorative Dentistry Department; Piracicaba Dental School - State University of Campinas; 901 Limeira Ave Areião, Piracicaba 13414-903 SP Brazil
| | - Rodrigo Rocha Maia
- Restorative Dentistry Department; College of Dentistry & Dental Clinics - The University of Iowa; Iowa City 52242-1010 IA USA
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15
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Diamantopoulou S, Papazoglou E, Margaritis V, Lynch CD, Kakaboura A. Change of optical properties of contemporary resin composites after one week and one month water ageing. J Dent 2013; 41 Suppl 5:e62-9. [PMID: 23583526 DOI: 10.1016/j.jdent.2013.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/13/2013] [Accepted: 04/02/2013] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES To compare color and translucency changes after water ageing for one-week and one-month in light and dark shades of contemporary polychromatic resin composites. METHODS Enamel (e) and dentine (d), light and dark (A1 and A4 or equivalents) shades were selected from the composites Enamel-Plus HRi/Micerium, Miris-2/Coltene, IPS Empress-Direct/Ivoclar and Filtek-Supreme/3M ESPE and light and dark shades from the TPH-Spectum/Densply monochromatic composite. Five disks (d = 10mm, h = 1mm) per material, enamel/dentine and light/dark shade were prepared. A colorimetric evaluation, over white and black background, according to the CIELab system was performed just after preparation and after one-week and one-month dark water-storage at 37°C. Color (ΔEab) and translucency (ΔTP) differences were calculated. Results were analysed by ANOVA and Scheffe's test, paired t-test and linear regression analysis (a = 0.05). RESULTS One-week water ageing provided a wide range of ΔEab values (0.79 Filtek(e)/D2 to 5.19 Filtek(d)/A1) and ΔTP values (-2.74 Hri/UD1 to 1.03 TPH/A1). After one-month water ageing ΔEab ranged from 1.09 Filtek(e)/D2 to 7.94 Filtek(d)/A1 and ΔTP values from -2.71Hri/UD1 to 1.07 Filtek(d)/A4. Significant changes in ΔEab between one-week and one-month water ageing were noted for Filtek and Miris dentine and Miris light enamel shades. As for ΔTP, significant difference was recorded only for IPS(e)/A4. ΔEab was significantly correlated with ΔL, Δα, Δb and ΔTP after one-week and with ΔL and Δα after one-month ageing. CONCLUSIONS Water ageing caused remarkable color changes, which were material and shade depended. Thirteen out of eighteen of the tested composites exhibited clinically perceptible (ΔEab>2.6) color changes even after short water ageing period.
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16
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Poggio C, Beltrami R, Scribante A, Colombo M, Chiesa M. Surface discoloration of composite resins: Effects of staining and bleaching. Dent Res J (Isfahan) 2013; 9:567-73. [PMID: 23559921 PMCID: PMC3612193 DOI: 10.4103/1735-3327.104875] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: The purpose of this in vitro study was to evaluate surface discoloration of three microhybrid composite resins (Esthet•X HD, Clearfil AP-X, Gradia Direct) and five nanohybrid composite resins (Ceram•X, GC Kalore, G-aenial, Grandio, GrandioSO), after staining and bleaching procedures. Materials and Methods: The composite resins were polymerized with a curing light (Celalux II, Voco, Cuxhaven, Germany) into 160 silicon molds (6,4 mm in diameter and 2 mm in thickness) to obtain identical specimens. Twenty samples for each composite resin were prepared. The specimens were polished using an automated polishing machine with the sequence of 600-, 800-, 1000-grit abrasive paper under water irrigation. The specimens were immersed in tea and distilled water: the specimens were dipped for 20 min, once a day (every 24 h), for 14 days into the drinks. The specimens were then bleached with carbamide peroxide at 17% (Perfect Bleach-Voco). The color of specimens was measured with a spectrophotometer according to the CIE L*a*b* system after light-polymerization of composite resin specimens, after 7 days, after 14 days, and after bleaching. The color difference h index (DEab*) between each measurement was calculated. Statistical analysis was made using analysis of variance (ANOVA). Results: All specimens showed a significant increase in staining with a similar trend and no significant differences between microhybrid and nanohybrid composite resins. After whitening procedures, materials tested showed both significant and unsignificant differences of the h index. Conclusions: Microhybrid and nanohybrid composite resins had similar in vitro surface discoloration in tea. After bleaching, discoloration was removed from some composite resins tested.
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Affiliation(s)
- Claudio Poggio
- Department of Operative Dentistry, University of Pavia, Italy
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17
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Kentrou C, Papadopoulos T, Lagouvardos P. Color changes in staining solutions of four light-cured indirect resin composites. Odontology 2013; 102:189-96. [PMID: 23417275 DOI: 10.1007/s10266-013-0106-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 01/20/2013] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to investigate the effect of different staining solutions on the color coordinates of indirect light-cured resin composites. 112 discs were made using four indirect composites, Signum+/Haraeus-Kulzer, Sinfony/3M-Espe, GC Gradia/GC, Ena HRi/Micerium, and divided into four groups which immersed in tea, coffee, chocolate and distilled water, at 37 °C, for 4 weeks. The color, before and after immersion for 1, 2, 3 and 4 weeks, was measured according to CIELAB system and ΔL*, Δa*, Δb* and ΔE* values were calculated for all immersion periods. The effect of time, solution and material on primary and secondary color coordinates was estimated using two-way repeated ANOVAs and pairwise comparisons, at a = 0.05. The results showed that coffee strongly affected all the materials (p < 0.05), followed by tea and chocolate. Sinfony presented the highest color change (p < 0.05), due to changes in b* and L* coordinates. Color coordinates were affected differently by material type and solution. In conclusion, this study showed that the color of indirect resin composites was affected by all three examined factors (immersion time, staining solution and material type), in a clinically appreciable level (ΔΕ* > 2.7 U) even from the first week, and in an unacceptable level (ΔΕ* > 5.5 U) in the second, third and fourth week, depending on the staining solution and the material.
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Affiliation(s)
- Christina Kentrou
- Department of Biomaterials, Dental School, University of Athens, Athens, Greece
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18
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Drubi-Filho B, Garcia LDFR, Cruvinel DR, Sousa ABS, Pires-de-Souza FDCP. Color stability of modern composites subjected to different periods of accelerated artificial aging. Braz Dent J 2013; 23:575-80. [PMID: 23306237 DOI: 10.1590/s0103-64402012000500018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 08/21/2012] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the color stability of composites subjected to different periods of accelerated artificial aging (AAA). A polytetrafluorethylene matrix (10 x 2 mm) was used to fabricate 24 test specimens of three different composites (n=8): Tetric Ceram (Ivoclar/Vivadent); Filtek P90 and Z250 (3M ESPE), shade A3. After light activation for 20 s (FlashLite 1401), polishing and initial color readout (Spectrophotometer PCB 687; BYK Gardner), the test specimens were subjected to AAA (C-UV; Comexim), in 8-h cycles: 4 h exposure to UV-B rays at 50°C and 4 h condensation at 50°C. At the end of each cycle, color readouts were taken and the test ended when the mean value of ΔE attained a level ≥3.30. Tetric Ceram presented alteration in ΔE equal to 3.33 in the first aging cycle. For Filtek P90 and Z250, two (ΔE=3.60) and four (ΔE=3.42) AAA cycles were necessary. After each cycle, there was a reduction of luminosity in all the samples (ΔL). It was concluded that a short period of AAA was sufficient to promote clinically unacceptable color alteration in composites, and that this alteration was material-dependent.
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Affiliation(s)
- Brahim Drubi-Filho
- Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo, Brazil
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19
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Gawriołek M, Sikorska E, Ferreira LFV, Costa AI, Khmelinskii I, Krawczyk A, Sikorski M, Koczorowski PR. Color and luminescence stability of selected dental materials in vitro. J Prosthodont 2012; 21:112-22. [PMID: 22380646 DOI: 10.1111/j.1532-849x.2011.00808.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PURPOSE To study luminescence, reflectance, and color stability of dental composites and ceramics. MATERIALS AND METHODS IPS e.max, IPS Classic, Gradia, and Sinfony materials were tested, both unpolished (as-cast) and polished specimens. Coffee, tea, red wine, and distilled water (control) were used as staining drinks. Disk-shaped specimens were soaked in the staining drinks for up to 5 days. Color was measured by a colorimeter. Fluorescence was recorded using a spectrofluorometer, in the front-face geometry. Time-resolved fluorescence spectra were recorded using a laser nanosecond spectrofluorometer. RESULTS The exposure of the examined dental materials to staining drinks caused changes in color of the composites and ceramics, with the polished specimens exhibiting significantly lower color changes as compared to unpolished specimens. Composites exhibited lower color stability as compared to ceramic materials. Water also caused perceptible color changes in most materials. The materials tested demonstrated significantly different initial luminescence intensities. Upon exposure to staining drinks, luminescence became weaker by up to 40%, dependent on the drink and the material. Time-resolved luminescence spectra exhibited some red shift of the emission band at longer times, with the lifetimes in the range of tens of nanoseconds. CONCLUSIONS Unpolished specimens with a more developed surface have lower color stability. Specimens stored in water develop some changes in their visual appearance. The presently proposed methods are effective in evaluating the luminescence of dental materials. Luminescence needs to be tested in addition to color, as the two characteristics are uncorrelated. It is important to further improve the color and luminescence stability of dental materials.
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Affiliation(s)
- Maria Gawriołek
- Department of Gerodontology, University of Medical Sciences, Poznań, Poland Faculty of Commodity Science, The Poznań University of Economics, Poznań, Poland
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20
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Sarkis E. Color change of some aesthetic dental materials: Effect of immersion solutions and finishing of their surfaces. Saudi Dent J 2012; 24:85-9. [PMID: 23960534 DOI: 10.1016/j.sdentj.2012.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 11/09/2011] [Accepted: 01/01/2012] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The purpose of this research was to evaluate the color change of five aesthetic dental materials, before and after immersion in distilled water and blue food color solution for 7 and 21 days, and to study the effect of finishing the surfaces on any color change. METHODS Disc shaped samples of five types of light curing composite (A2) (n = 10 samples/composite) were prepared and all samples were light-cured with a Plasma Arc light cure unit for ten seconds. One side of each sample disc was finished and polished with a Super-Snap system all samples. After 24 h, color measurements of each sample were conducted using a digital spectrophotometer. Five sample discs from each composite group were immersed in 30 ml of food color solution for 7 and 21 days, while the remaining five sample discs were immersed in 30 ml of distilled water as a control. Color measurements were repeated for all samples at 7 and 21 days after immersion. The color changes were statistically analyzed using t-tests within the same group. A result was considered statistically significant at α = 0.05. RESULTS The color differences (ΔE) ranged from 0.4 to 4.66 and statistically significant differences on the finished and unfinished surfaces were observed after immersion in the food color solution for 7 days. No significant differences were found in any group after immersion in the food color solution for 21 days. The Tetric EvoCeram and Arabesk groups showed less color differences after 7 and 21 days than other composites. CONCLUSION Finished composite surfaces showed less coloration than unfinished surfaces after 7 days, but all surfaces (finished and unfinished) were highly colored for all composite types after 21 days.
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Affiliation(s)
- Elizabeth Sarkis
- Department of Conservative Dentistry, Faculty of Dentistry, University of Aleppo, Aleppo, Syria
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21
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Turgut S, Bagis B. Colour stability of laminate veneers: An in vitro study. J Dent 2011; 39 Suppl 3:e57-64. [DOI: 10.1016/j.jdent.2011.11.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 11/03/2011] [Accepted: 11/07/2011] [Indexed: 10/15/2022] Open
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Domingos PADS, Garcia PPNS, Oliveira ALBMD, Palma-Dibb RG. Composite resin color stability: influence of light sources and immersion media. J Appl Oral Sci 2011; 19:204-11. [PMID: 21625734 PMCID: PMC4234330 DOI: 10.1590/s1678-77572011000300005] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2009] [Accepted: 05/25/2010] [Indexed: 11/24/2022] Open
Abstract
Objective This study evaluated the influence of light sources and immersion media on the
color stability of a nanofilled composite resin. Material and Methods Conventional halogen, high-power-density halogen and high-power-density
light-emitting diode (LED) units were used. There were 4 immersion media: coffee,
tea, Coke® and artificial saliva. A total of 180 specimens (10 mm x 2
mm) were prepared, immersed in artificial saliva for 24 h at 37±1ºC, and had their
initial color measured with a spectrophotometer according to the CIELab system.
Then, the specimens were immersed in the 4 media during 60 days. Data from the
color change and luminosity were collected and subjected to statistical analysis
by the Kruskall-Wallis test (p<0.05). For immersion time, the data were
subjected to two-way ANOVA test and Fisher's test (p<0.05). Results High-power-density LED (∆E=1.91) promoted similar color stability of the composite
resin to that of the tested halogen curing units (Jet Lite 4000 plus - ∆E=2.05; XL
3000 - ∆E=2.28). Coffee (∆E=8.40; ∆L=-5.21) showed the highest influence on color
stability of the studied composite resin. Conclusion There was no significant difference in color stability regardless of the light
sources, and coffee was the immersion medium that promoted the highest color
changes on the tested composite resin.
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23
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Malhotra N, Shenoy RP, Acharya S, Shenoy R, Mayya S. Effect of three indigenous food stains on resin-based, microhybrid-, and nanocomposites. J ESTHET RESTOR DENT 2011; 23:250-7. [PMID: 21806757 DOI: 10.1111/j.1708-8240.2011.00431.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE This study investigated the effects of three indigenous food stains (tea, tobacco, turmeric) on a nanocomposite (Ceram-X-Mono, Dentsply DeTery, Konstanz, Germany), a microhybrid posterior (P60, 3M ESPE, St. Paul, MN, USA), and a universal microhybrid (Z100, 3M ESPE) resin-based composite (RBC). MATERIALS AND METHODS Thirty-six disk-shaped specimens were fabricated (10 × 2 mm) for each type of RBC material, using a polytetraflouroethylene (PTFE) sheet. Specimens from each group were randomly distributed into three subgroups for each of the used stains. The baseline color values were measured using a spectrophotometer. The specimens were immersed in the staining solutions for a period of 3 hours per day for 15 days (3 hours/day × 15 days). Following this, the color change value (ΔE) was calculated. RESULTS AND CONCLUSION All the tested groups showed a clinically perceptible color change (ΔE values = 3.3 or >3.3), except for tea-stained P60 (ΔE = 3.15) and Z100 (ΔE = 1.63) groups. Turmeric caused the most significant color change for all the tested RBCs. The least amount of color change was observed with the Z100 (tea, ΔE = 1.63; tobacco, ΔE = 13.59; turmeric, ΔE = 38.77) group that was statistically significant from P60 (tea, ΔE = 3.15; tobacco, ΔE = 18.83; turmeric, ΔE = 57.72), and Ceram-X-Mono (tea, ΔE = 3.32; tobacco, ΔE = 18.83; turmeric, ΔE = 53.95) groups.
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Affiliation(s)
- Neeraj Malhotra
- Department of Conservative Dentistry and Endodontics, Manipal College of Dental Sciences, Mangalore, Karnataka, India.
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24
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SABATINI CAMILA, CAMPILLO MARC, AREF JAMIL. Color Stability of Ten Resin-Based Restorative Materials. J ESTHET RESTOR DENT 2011; 24:185-99. [DOI: 10.1111/j.1708-8240.2011.00442.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Kilinc E, Antonson SA, Hardigan PC, Kesercioglu A. Resin cement color stability and its influence on the final shade of all-ceramics. J Dent 2011; 39 Suppl 1:e30-6. [PMID: 21241766 DOI: 10.1016/j.jdent.2011.01.005] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 12/17/2010] [Accepted: 01/10/2011] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVES Adhesive resin cements may go through internal discoloration, which may show-through and affect the appearance of translucent all-ceramic restorations. This in vitro study evaluated the amount of resin cement color change and its effect on the final shade of the all-ceramics. METHODS Three different resin cements in both light and dual-cure forms were included in the study (Nexus-2/Kerr; Appeal/Ivoclar Vivadent; Calibra/Dentsply). All resin cements contained veneered (IPS Empress Esthetic, ETC1 shade, 20 mm × 1 mm ingot discs) and uncovered groups (n=10/group), all luted on white backgrounds (acetalpolyoxymethylene/Delrin(®)). Curing was performed according to ISO standards with a calibrated LED curing-light (Flashlite 1401). Samples were stored in 37°C distilled water at dark. Spectrophotometric baseline color measurements (Color Eye 7000A) were performed from the samples' top surfaces at 24h (D65 illuminator). Samples were subjected to 65 h of accelerated ageing (Atlas Ci4000). Further color measurements from the same areas were recorded in CIEL*a*b* coordinates where a ΔE data above 3 was accepted as visible discoloration (OptiviewLite-1.9software). Statistical analysis was performed using a nested random effects model and Tukey's post hoc analysis. RESULTS Light-cure groups showed better color stability in all three resins but only in Appeal resin cement, the dual-cure group discolored significantly more (p<0.001). More discoloration was recorded on uncovered cement groups that represented the exposed cement at the margins. There was no visible color change (ΔE>3) through the ceramic surface on any veneered group. CONCLUSIONS All resin cements showed varying degrees of discoloration after accelerated ageing however their actual color change was partially masked by the ceramic. Dual-cure resin cements may affect aesthetics on restoration margins if directly exposed.
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Affiliation(s)
- Evren Kilinc
- Department of Cariology and Restorative Dentistry, Nova Southeastern University College of Dental Medicine, 3200 South University Drive, Fort Lauderdale, FL 33328, USA.
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26
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Effect of bleaching on color change and surface topography of composite restorations. Int J Dent 2011; 2010:695748. [PMID: 21234338 PMCID: PMC3017940 DOI: 10.1155/2010/695748] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 11/08/2010] [Indexed: 11/17/2022] Open
Abstract
This study was conducted to determine the effect of 15% carbamide peroxide bleaching agent on color change and surface topography of different composite veneering materials (Filtek Z350 (3M ESPE), Esthet X (Dentsply India), and Admira (Voco, Germany). Methods. 30 samples were fabricated for evaluation of color change using CIELAB color system and Gonioreflectometer (GK 311/M, ZEISS). 45 disc-shaped specimens were made for evaluation of surface topography after bleaching (Nupro White Gold; Dentsply) using SEM. Statistical analysis. One way ANOVA and Multiple comparison tests were used to analyze the data. Statistical significance was declared if the P value was .05 or less. Results and conclusion. All the specimens showed significant discoloration (ΔE > 3.3) after their immersion in solutions representing food and beverages. The total color change after bleaching as compared to baseline color was significant in Filtek Z350 (P = .000) and Esthet X (P = .002), while it was insignificant for Admira (P = .18). Esthet X showed maximum surface roughness followed by Admira and Filtek Z350. Bleaching was effective in reducing the discoloration to a clinically acceptable value in all the three groups (ΔE < 3.3).
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Khatri A, Nandlal B. Staining of a Conventional and a Nanofilled Composite Resin Exposed in vitro to Liquid Ingested by Children. Int J Clin Pediatr Dent 2010; 3:183-8. [PMID: 27616840 PMCID: PMC4993824 DOI: 10.5005/jp-journals-10005-1074i] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Accepted: 06/30/2010] [Indexed: 11/23/2022] Open
Abstract
Aims and objective : To evaluate and compare the effect of coffee, chocolate drink and food dye on the color stability of conventional composite resin and nanocomposite resin. Design : The study sample consists of microhybrid composite and other nanocomposite of shade B1. 40 disks of each material with a diameter of 18 mm and thickness of 1 mm were prepared before discoloration procedure specimens were measured for L* a* b* values and then 10 specimens of each subgroup were immersed in each of three staining solution. The 10 remaining specimens of each main group were immersed in control solution. Discoloration values were analyzed at baseline, 1 week and 4 weeks following immersion in staining solution. The color and color difference of each specimen were measured by spectrophotometer. L* a * b* values of each specimens were measured 3 times by placing each specimen on the measuring head. Resistance to staining effect is expressed in ΔE unit and was calculated from the mean ΔL* a* and Δb* values for each specimens with the following formula. Equation : ΔE* = [(ΔL*)2 + (Δa*) + (Δb*)2]½. Result : Result of study showed that nanocomposite is more stain resistant and color change ΔE*. Conventional composite demonstrates unacceptable color change ΔE* more especially in specimens immersed in coffee. Conclusion : The result of this study indicated tested conventional composite resin was more susceptible to change in color in various media over an extended period of time as compared to nanocomposite.
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Affiliation(s)
- Amit Khatri
- Lecturer, Department of Pedodontics, University College of Medical Sciences, Delhi University, New Delhi, India
| | - B Nandlal
- Head, Department of Pedodontics and Preventive Dentistry, JSS Dental College and Hospital, Mysore, Karnataka, India
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28
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Effects of specular component on color differences of different filler type resin composites after aging. J Dent 2009; 37:585-90. [DOI: 10.1016/j.jdent.2009.03.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 03/24/2009] [Accepted: 03/24/2009] [Indexed: 11/21/2022] Open
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Effect of exposure time on the color stability of resin-based restorative materials when polymerized with quartz–tungsten halogen and LED light. Clin Oral Investig 2009; 14:599-605. [DOI: 10.1007/s00784-009-0316-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Accepted: 07/06/2009] [Indexed: 10/20/2022]
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30
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Insufficient cure under the condition of high irradiance and short irradiation time. Dent Mater 2009; 25:283-9. [PMID: 18760834 DOI: 10.1016/j.dental.2008.07.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 05/30/2008] [Accepted: 07/18/2008] [Indexed: 11/21/2022]
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Mazur-Koczorowska A, Sikorska E, Krawczyk A, Khmelinskii I, Sikorski M, Koczorowski R, Stopa J. Luminescence of selected dental composites in vitro. Dent Mater 2008; 24:1329-35. [PMID: 18405961 DOI: 10.1016/j.dental.2008.02.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2007] [Revised: 02/19/2008] [Accepted: 02/19/2008] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The work was motivated by the necessity to evaluate the emission changes of dental composites, as the emission under UV light is one of the important optical parameters of the hard tooth tissue. METHODS Fulfill extra, Artemis and Durafill VS materials in A3.5 shade were tested. Coffee, tea, red wine and distilled water (blank) were used as staining drinks. The samples were soaked for 7 days. Total luminescence matrices were collected with an interval of 1 nm in emission and 10nm in excitation, in the front-face geometry. RESULTS The exposure of dental composites to staining drinks caused a reduction in luminescence intensity by up to 40%, the magnitude of the reduction depending on the drink and on the composite material. In the special case of the intrinsically weak fluorescent Durafill VS, the exposure to coffee apparently caused an increase in luminescence intensity due to coffee components adsorbed on the sample surface. SIGNIFICANCE It is important to improve the emission stability of dental composites. The presently proposed methods are effective in evaluating the emission of dental composites. Emission needs to be tested in addition to color, as the two parameters are uncorrelated.
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Affiliation(s)
- Anna Mazur-Koczorowska
- Medical Faculty II, Poznań University of Medical Sciences, Bukowska 70, 60-812 Poznań, Poland
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Rüttermann S, Servos A, Raab WHM, Janda R. In vitro effect of light-emitting diode light polymerization on the color stability of three resin-based restorative materials. Acta Odontol Scand 2008; 66:43-9. [PMID: 18320418 DOI: 10.1080/00016350801918385] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To investigate the color stability of resin-based restorative materials when polymerized with light-emitting diode (LED) curing light in the constant or exponential mode. MATERIAL AND METHODS Eight specimens of Admira (AD), Compoglass F (CO), and Tetric EvoCeram (TE) constantly cured or exponentially cured with a high-powered LED curing light for 10, 20, or 60 s. The CIE-Lab values (L*, a*, b*) were measured prior to and after performing the water storage or color stability test according to EN ISO 7491 (Suntest). RESULTS Statistical analysis showed significant changes in the color values after each of the aging processes, as well as between DeltaL, Deltaa, Deltab, and DeltaE of the materials, which were dependent on curing time, mode, and aging condition (p<0.05). CO performed very well during water storage, but AD and TE exceeded the clinically relevant limit DeltaE=1. After the Suntest and 180 d additional water storage, TE showed the highest mean (SD) DeltaE=4.4 (1.1) to 5.4 (1.9). Although AD and CO performed best in the constant mode, they exceeded DeltaE=1. All materials shifted to more red. CONCLUSIONS The extent of discoloration depended on (a) the curing mode, (b) the curing time, and (c) the aging condition. Not all materials performed clinically acceptably in all tests; TE even showed unacceptable DeltaE>3.3. The optimal curing time was 20 s for both curing modes and all tested materials.
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HUBBEZOGLU I, AKAOGLU B, DOGAN A, KESKIN S, BOLAYIR G, ÖZÇELIK S, DOGAN OM. Effect of Bleaching on Color Change and Refractive Index of Dental Composite Resins. Dent Mater J 2008. [DOI: 10.4012/dmj.27.105] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rüttermann S, Ritter J, Raab WHM, Bayer R, Janda R. Laser-induced fluorescence to discriminate between a dental composite resin and tooth. Dent Mater 2007; 23:1390-6. [PMID: 17207525 DOI: 10.1016/j.dental.2006.11.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2006] [Revised: 11/21/2006] [Accepted: 11/21/2006] [Indexed: 10/23/2022]
Abstract
PURPOSE Investigation of laser-induced fluorescence of an experimental pigment (Flu) to discriminate between a filling and the tooth and its influence on the material properties of experimental dental composites. MATERIALS AND METHODS Three experimental composites (EC) were manufactured. The standard contained no Flu, Flu-0.5 contained 0.5%, Flu-1.0 contained 1%. To judge the extent of fluorescence, specimens and fillings placed in natural teeth were irradiated with an infrared laser (980 nm, 120 mW). Flexural strength, modulus of elasticity, depth of cure, water sorption, solubility, and color (CIE-L(*)a(*)b(*)-values) were measured to investigate the influence of Flu on EC. ANOVA was calculated and the statistical significance was p < 0.05. RESULTS Strong laser-induced green fluorescence was observed so that fillings and tooth structures were clearly discriminated. No influence of Flu on flexural strength and modulus of elasticity occurred. Water sorption and solubility were far below the limits of EN ISO 4049. Increasing Flu concentrations revealed minor but significant reduction of depth of cure, shifts to more white and red and less yellow. SIGNIFICANCE Flu provides laser-induced fluorescence allowing an easy discrimination between fillings and teeth. Flu did not severely influence the material properties.
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Affiliation(s)
- St Rüttermann
- Centre of Dentistry, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
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Yazici AR, Çelik Ç, Dayangaç B, Özgünaltay G. The Effect of Curing Units and Staining Solutions on the Color Stability of Resin Composites. Oper Dent 2007; 32:616-22. [DOI: 10.2341/07-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Clinical Relevance
The color stability of resin composites did not vary based on the type of light curing unit. The effect of staining solutions on color changes in resin composites was resin composite and immersion time-dependent.
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Faltermeier A, Behr M, Müssig D. Esthetic brackets: The influence of filler level on color stability. Am J Orthod Dentofacial Orthop 2007; 132:5.e13-6. [PMID: 17628243 DOI: 10.1016/j.ajodo.2006.10.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2006] [Revised: 09/26/2006] [Accepted: 10/10/2006] [Indexed: 11/29/2022]
Abstract
INTRODUCTION An undesirable effect of plastic brackets is their discoloration after a short time in the oral cavity. The objective of this study was to investigate the influence of the filler level of plastic brackets on color stability after exposure to food dyes or ultraviolet (UV) light. METHODS Three bracket groups were produced with silicon dioxide as the filler: an unfilled urethane-dimethacrylate (UDMA) bracket, a UDMA bracket with filler content of 35% by volume, and a UDMA bracket with filler level of 70% by volume. All brackets were exposed for 72 hours to UV light in an aging device with a xenon lamp to simulate natural daylight or to food dyes (cola or tea). Color measurements were made with a spectrophotometer according to the CIE L*a*b* system, and color changes (DeltaE*) were computed. RESULTS Greater exogenous discoloration was observed by raising the filler level of UDMA brackets. Almost all investigated polymer brackets showed clinically acceptable color stability during in-vitro exposure to colorants. However, almost all brackets seemed more yellow after UV light treatment. CONCLUSIONS Silicon-dioxide filler-reinforced UDMA brackets showed an obvious trend for increased exogenous discoloration when filler level was raised. Highly filled brackets were less susceptible to endogenous discoloration caused by UV light.
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Affiliation(s)
- Andreas Faltermeier
- Department of Orthodontics, University Medical Center of Regensburg, Regensburg, Germany.
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Sarafianou A, Iosifidou S, Papadopoulos T, Eliades G. Color Stability and Degree of Cure of Direct Composite Restoratives After Accelerated Aging. Oper Dent 2007; 32:406-11. [PMID: 17695615 DOI: 10.2341/06-127] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Clinical Relevance
Accelerated hydrothermal- and photo-aging of direct light-cured composite restorative materials induced visually perceptible but clinically acceptable total color changes, along with a reduction in the amount of remaining C=C bonds.
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Affiliation(s)
- Aspasia Sarafianou
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
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Pérez MDM, Saleh A, Yebra A, Pulgar R. Study of the Variation between CIELAB .DELTA.E* and CIEDE2000 Color-differences of Resin Composites. Dent Mater J 2007; 26:21-8. [PMID: 17410889 DOI: 10.4012/dmj.26.21] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study sought to assess the significance of the corrections introduced in the new CIEDE2000 color difference formula with respect to deltaE*ab. The purpose of which was to provide sounder knowledge, and hence more informed decision-making, about applying this new formula to dental resin composites. With two different hybrid composites, color differences were calculated between unpolymerized and polymerized resin composites, between polymerized resin composites of different thicknesses (1 and 2 mm), and between polymerized resin composites cured with halogen and LED light curing units (LCUs). The two formulas differed significantly, with VAB(E) (equal size) values higher than the inter-observer variability (VAB (E)=11%) and VAB(O) (original size) values greater than 25% for each of the data sets analyzed. Results obtained in this study agreed with and thus supported the recent recommendation of the Commission Internationale de l'Eclairage (CIE), whereby the new CIEDE2000 formula should be used to evaluate color differences of resin composites.
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Affiliation(s)
- María del Mar Pérez
- Department of Optics, Science Faculty, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain.
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Janda R, Roulet JF, Latta M, Kaminsky M, Rüttermann S. Effect of exponential polymerization on color stability of resin-based filling materials. Dent Mater 2006; 23:696-704. [PMID: 16899289 DOI: 10.1016/j.dental.2006.06.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2005] [Revised: 03/13/2006] [Accepted: 06/19/2006] [Indexed: 02/08/2023]
Abstract
PURPOSE To investigate the influence of a halogen light curing device used with constant or exponential polymerization mode on the color stability of contemporary resin-based filling materials. MATERIALS AND METHODS Eight samples of Charisma (CH), Durafill (DU), Definite (DE), and Dyract AP (DY) each were light-cured with constant power or with soft-start mode (Translux Energy) for 20, 40 or 60s. The CIE-Lab-values (L(*), a(*), b(*)) were measured prior to and after performing dry aging, water aging or a Suntest (EN ISO 7491) and Delta L-, Delta a-, Delta b-, and Delta E-values were calculated. RESULTS Statistical analysis (GLM and repetition of measures) showed significant changes (p<0.05) of the color values for each material's curing mode and time after each of the aging processes. Four-way ANOVA revealed significant differences (p<0.05) between Delta L-, Delta a-, Delta b-, and Delta E of the materials in dependence on the curing time and mode and aging condition. Exponentially-cured DU was the most color-unstable material after aging in water followed by the 20s exponentially cured DE and CH samples. After the Suntest, DY showed significant bleaching (negative Delta b) and the largest Delta E for all curing times and modes followed by the DE samples. DU and CH were the most color-stable materials in this test. SIGNIFICANCE The extent of discoloration depends on the (a) curing time, (b) curing mode, (c) aging condition, and (d) material. For the constant curing mode, 40s curing time for the exponential 60s seems to be appropriate.
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Affiliation(s)
- R Janda
- Heinrich-Heine-University, Medical Faculty, Centre of Dentistry, Department of Operative and Preventive Dentistry and Endodontics, Moorenstr. 5, Geb. 18.13, D-40225 Düsseldorf, Germany.
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Schirrmeister JF, Huber K, Hellwig E, Hahn P. Two-year evaluation of a new nano-ceramic restorative material. Clin Oral Investig 2006; 10:181-6. [PMID: 16721551 DOI: 10.1007/s00784-006-0048-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2005] [Accepted: 04/05/2006] [Indexed: 11/29/2022]
Abstract
The purpose of this prospective study was to evaluate the clinical performance of a new restorative material (Ceram.X) in combination with a new primer-adhesive (K-0127). One operator placed two Class I or II restorations in molars of 43 patients. One molar was restored with Ceram.X/K-0127, the other one with Tetric Ceram/Syntac Classic. At baseline, after 1 and 2 years, the restorations were evaluated by one evaluator using modified Ryge's criteria. After 2 years, 31 patients were examined. One Ceram.X-restoration had to be removed for root canal treatment due to pulpitis. Thus, failure rate of Ceram.X was 3.2% and of Tetric Ceram, 0%. In both groups, no sensitivity, no recurrent caries, and no changes in surface texture were recorded after 2 years. One restoration in each group showed slight changes in color stability (score B). Marginal discoloration (score B) was found concerning three Ceram.X-restorations (10.0%) and two Tetric Ceram-restoration (6.5%). Marginal integrity was score B for four Ceram.X-restorations (13.3%) and for four Tetric Ceram-restorations (12.9%). No statistically significant differences were found (p>0.05). After 2 years of clinical service, 96.8% of Ceram.X/K-0127 and 100% of Tetric Ceram/Syntac Classic restorations were in place and performed clinically well.
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Affiliation(s)
- J F Schirrmeister
- Department of Operative Dentistry and Periodontology, Albert-Ludwigs-University of Freiburg, Freiburg, Germany.
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