The effect of storage media upon the surface microhardness and abrasion resistance of three composites

Chadwick, R. G.; McCabe, J.F.; Walls, A.W.G.; Storer, R.

doi:10.1016/s0109-5641(05)80042-9

Cited by 114 publications

(97 citation statements)

References 12 publications

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“…The sports and energy drinks tested in this study had pH levels ranging between 2.67 and 3.79. Immersion therein for 1 week resulted in lower surface hardness of all the restorative materials than at baseline, suggesting a susceptibility of the composite resins to erode under acidic conditions 27,28) . In particular, Compoglass F showed significantly lower surface hardness than the other restorative materials after 1 week of immersion, and this was true for all sports and energy drinks.…”

Section: Discussionmentioning

confidence: 96%

“…Deterioration of resin materials probably occurred because of water absorption, such that the presence of water softened the resin by swelling the polymer network and reducing the frictional forces between the polymer chains 31,32) . Moreover, composite resins have high solubility in low-pH solutions, leading to surface erosion and dissolution, matrix softening, and loss of structural ions 27,28,33,34) . After 6 months of immersion, further softening of all the restorative materials was observed.…”

Section: Discussionmentioning

confidence: 99%

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Surface hardness of different restorative materials after long-term immersion in sports and energy drinks

et al. 2012

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The purpose of this study was to evaluate the effect of sports and energy drinks on the surface hardness of different restorative materials over a 6-month period. Forty-two disk-shaped specimens were prepared for each of the four restorative materials tested: Compoglass F, Filtek Z250, Filtek Supreme, and Premise. Specimens were immersed for 2 min daily, up to 6 months, in six storage solutions (n=7 per material for each solution): distilled water, Powerade, Gatorade, X-IR, Burn, and Red Bull. Surface hardness was measured at baseline, after 1 week, 1 month, and 6 months. Data were analyzed statistically using repeated measures ANOVA followed by the Bonferroni test for multiple comparisons (α=0.05). Surface hardness of the restorative materials was significantly affected by both immersion solution and immersion period (p<0.001). All tested solutions induced significant reduction in surface hardness of the restorative materials over a 6-month immersion period.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Surface hardness of different restorative materials after long-term immersion in sports and energy drinks

et al. 2012

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“…Water has been proven to cause various effects on dental resin-composites as a result of degradation process [7,12,15,35,36]. Ethanol and MEK are solvents of choice to simulate an accelerated ageing process.…”

Section: Discussionmentioning

confidence: 99%

Surface and bulk properties of dental resin- composites after solvent storage

2016

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“…20,23,[25][26][27] As reported by the manufacturer, Esthet-X is a microhybrid composite containing BisGMA, BisEMA and TEGDMA and 0.6-0.8 µm sized fillers, and Filtek Supreme is a nano-composite with a primary 20 nm silica filler and loosely bonded cluster zirconia/silica particle size range from 0.6 to 1.4 µm. Filtek's resin matrix is composed of BisGMA, UDMA, BisEMA and TEGDMA.…”

Section: Discussionmentioning

confidence: 99%

Surface Hardness of Resin Composites After Staining and Bleaching

Ökte

Villalta

Garcı́a-Godoy

et al. 2006

Operative Dentistry

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SUMMARYThis study investigated the effect of 3 staining solutions and 3 over-the-counter tooth-bleaching systems on the microhardness of 2 dental resin composites. Forty-five specimens of Filtek Supreme and Esthet-X were randomly assigned to 3 groups. Over a 40-day test period, the specimens in each group (n=15) were immersed in 1 of the 2 staining solutions (coffee and red wine) or distilled water as the control for 3 hours a day at room temperature. The 15 specimens in each staining group were further randomly divided into 3 subgroups, and the specimens in each subgroup (n=5) were bleached using one of the bleaching agents (Night Effects, Simply White Night and Opalescence Quick). Surface hardness was measured at 24 hours after polymerization (baseline), after staining and after bleaching. Means and standard deviations were calculated, and the data were analyzed using repeatedmeasures analysis of variance and Duncan's Test. The microhardness of Esthet-X was significantly higher than Filtek Supreme at baseline (p<0.01). All specimens of both materials immersed in coffee and wine revealed a significant hardness decrease compared to baseline values (p<0.05). In the control group, microhardness was increased, and this increase was statistically significant for Filtek Supreme (p<0.05). After bleaching, there was a significant decrease in mean microhard-

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The effect of storage media upon the surface microhardness and abrasion resistance of three composites

Cited by 114 publications

References 12 publications

Surface hardness of different restorative materials after long-term immersion in sports and energy drinks

Surface hardness of different restorative materials after long-term immersion in sports and energy drinks

Surface and bulk properties of dental resin- composites after solvent storage

Surface Hardness of Resin Composites After Staining and Bleaching

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