Effects of artificial accelerated aging on the optical properties of resin composites

Dantas, Débora Cristina Barbosa; Mathias, Ingrid Fernandes; Borges, Alessandra Bühler; Torres, Carlos Rocha Gomes; Caneppele, Taciana Marco Ferraz

doi:10.14393/bj-v34n2a2018-39497

Cited by 6 publications

(10 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Internal factors include the content of the resin matrix, filler loading and particle size distribution, type of photoinitiators, and remaining C=C bonds (20). During light-curing, initiators and tertiary aromatic amines form products that, under temperature or UV light challenges, cause resin discoloration towards red or yellow (21). A previous study (12) found that L* values decreased and b* values increased in resin composites after AAA.…”

Section: Discussionmentioning

confidence: 99%

Effect of Polishing Systems on the Color and Surface Properties of Resin Composites in the Process of Accelerated Artificial Aging

Fidan¹,

DERELİ

2022

Clinical and Experimental Health Sciences

View full text Add to dashboard Cite

Objective: This study aimed to investigate the effects of polishing system on the color stability, surface roughness, and hardness of resin composites in the presence and absence of accelerated artificial aging (AAA). Methods: Six resin composites (Universal Restorative 200, G-Aenial Anterior, Ceram-X Duo, Admira, IPS Empress Direct, Clearfil Majesty Esthetic) were evaluated. Thirty disc-shaped samples were prepared for each composite group. Resin composite groups were divided into three subgroups: control (Mylar strip), disc (Optidisc), and rubber (Dimanto) (n=10). Color change (ΔE00) was calculated using the CIEDE 2000 formula. Before and after AAA, the surface roughness (Ra, μm) and hardness (VHN) values were measured. Data were analysed using ANOVA, the Bonferroni test, and Pearson correlation (p

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Polishing Systems on the Color and Surface Properties of Resin Composites in the Process of Accelerated Artificial Aging

Fidan¹,

DERELİ

2022

Clinical and Experimental Health Sciences

View full text Add to dashboard Cite

show abstract

“…However, the results depend on the materials used. Attempting to improve the characteristics of these materials and increase their durability, new monomers and changes in the inorganic matrix in resin compositions have been proposed (Schmitt et al 2016;Dantas et al 2018). In bulk-fill composite resins, manufacturers have added components such as benzoyl peroxide, camphorquinone, and Ivocerin for enhanced capabilities that allow light-curing in deep cavities.…”

Section: Discussionmentioning

confidence: 99%

Effect of low temperature and room temperature on the depth of cure of bulk-fill composite resins

Ferreira

Silva²,

Dietrich³

et al. 2023

Biosci. J.

View full text Add to dashboard Cite

The study analyzed the influence of temperature on the depth of cure of bulk-fill composite resins. Three discs (ISO 4049/2000) from each group were made, and four restorative materials were investigated: Opus Bulk-Fill Flow, Opus Bulk-Fill APS, Filtek™ One Bulk-Fill, and Filtek™ Bulk-Fill Flow. They were light-cured (Gnatus ± 1,200 mW/cm2) for 20 seconds, varying the temperature (23°C and 5°C) and simulating the use of the product both at room temperature and under refrigeration. The materials were inserted in aluminum matrices with 10 mm in depth and 4 mm in diameter. A clear film strip and a glass microscope slide were positioned at the top and bottom surfaces. The material was condensed and light-cured with the tip of the light source in close contact, for 20 seconds on the top surface. Immediately after irradiation, the samples were removed from the mold, and the uncured part was removed with a plastic spatula. The measurement was performed with a micrometer ± 0.1 mm, and the value was divided by 2. The data were analyzed with two-way ANOVA at a significance of 0.05. There was a statistical difference in the temperature between the results obtained in Opus Bulk-Fill APS (p <0.001) and Filtek™ Bulk-Fill Flow (p = 0.018) resins. For the temperature of 5°C, Filtek™ Bulk-Fill Flow showed a statistical difference compared to the other resins, while Opus Bulk-Fill Flow and Opus Bulk-Fill APS did not. For the temperature of 23°C, Filtek™ Bulk-Fill Flow maintained the statistical difference from the others, but Filtek™ One Bulk-Fill and Opus Bulk-Fill APS did not present statistical differences. Storing the Filtek™ Bulk-Fill Flow composite resin in the refrigerator caused a greater depth of cure than the other resins, and the depth of cure decreased at room temperature. As for Opus Bulk-Fill APS, the depth of cure decreased proportionally to the temperature decrease. The temperature may affect the depth of cure of some composite resins.

show abstract

“…Moreover, they include additional structures, such as photoinitiator, accelerator, and pigment. However, some of these structures may deteriorate over time and as a result influence the optical properties of resin composite [4]. In addition, inadequate polymerization of these materials may cause problems, such as color changes, pulpal irritations, postoperative sensitivity, and restoration failures [5].…”

Section: Introduction mentioning

confidence: 99%

“…Resin composite materials may have a tendency to stain during prolonged service [6]. However, discoloration of restorations requires the replacement of the restorations [4]. Therefore, the color change of composites should be ensured and the material color is expected to remain constant in the long term [5].…”

Section: Introduction mentioning

confidence: 99%

Effect of Light-Curing Distances on the Color and Translucency of Resin Composites After Accelerated Aging

Fidan

2023

View full text Add to dashboard Cite

Polymerization plays an important role in the color and translucency of resin composite materials. The aim of this study was to evaluate the effect of light-curing distances of resin composites on color change (ΔE00) and translucency change (ΔTP) after accelerated aging (AA). Four resin composites (G-Aenial Anterior, Charisma Smart, GrandioSO, and Admira Fusion) were used. The resin composites were cured from 0 mm, 2 mm, and 4 mm distances. A spectrophotometer was used to determine the color measurements and calculate the color change and translucency using the CIEDE2000 formula. The resin composites were submitted to AA for 300 h. Two-way analysis of variance and multiple comparisons Tukey’s test were used (p < 0.05). ΔE00 at 0 mm and 2 mm distance was similar, but higher was found at 4 mm distance. The highest and lowest ΔE00 were observed in the G-Aenial Anterior and Charisma Smart respectively. But no differences were observed between Charisma Smart and Admira Fusion. Translucency changes at 2 mm and 4 mm distances were similar, but lower translucency changes were observed at a distance of 0 mm. The translucency change values of the materials were found to be similar after accelerated aging. Increasing the light-curing distance can lead to deterioration of color stability and a tendency to decrease translucency. Clinicians should position the light-curing device as close to the material as possible.

show abstract

Effects of artificial accelerated aging on the optical properties of resin composites

Cited by 6 publications

References 23 publications

Effect of Polishing Systems on the Color and Surface Properties of Resin Composites in the Process of Accelerated Artificial Aging

Effect of Polishing Systems on the Color and Surface Properties of Resin Composites in the Process of Accelerated Artificial Aging

Effect of low temperature and room temperature on the depth of cure of bulk-fill composite resins

Effect of Light-Curing Distances on the Color and Translucency of Resin Composites After Accelerated Aging

Contact Info

Product

Resources

About