Effect of Opalescence® bleaching gels on the elution of bulk-fill composite components

Schuster, Lena; Reichl, Franz‐Xaver; Rothmund, Lena; He, Xiuli; Yang, Yang; Landuyt, Kirsten Van; Kehe, Kai; Polydorou, Olga; Hickel, Reinhard; Högg, Christof

doi:10.1016/j.dental.2015.11.033

Cited by 17 publications

(10 citation statements)

References 36 publications

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“…Monomer released from bleached dental composite restorations was examined by Polydorou et al (8) with the observation that bleaching increased the monomer release. The amount of monomer released from composite resins treated with CP-containing bleaching agents at concentrations of 15% and 35% was measured by Schuster et al (9) with the finding that bleaching could either increase or decrease monomer release. Further, CP/HP in the bleaching gel was found to damage the polymer network, leading to the increased monomer release.…”

Section: Discussionmentioning

confidence: 99%

“…When CP combines with saliva during bleaching, it converts into HP and urea, and HP reacts to form oxygen and water (8). In both bleaching methods, especially in office-type bleaching, tooth sensitivity and pulp damage may occur due to HP (9). Composite resins are considered to be very stable in structure; however, the resins cannot be fully polymerized intraorally, and residual monomer may be released into the saliva (10).…”

Section: Monomer Release From Nanohybrid Composites After Bleachingmentioning

confidence: 99%

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Monomer release from nanohybrid composites after bleaching

et al. 2019

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The evaluation of the effect of bleaching on monomer release from two composite resins was performed by bleaching two nanohybrid composite resins Filtek Z550 and Tetric N-Ceram using two bleaching products Whiteness HP Maxx and Vivastyle. In total, 20 samples were made from each composite resin from which four groups were fabricated (two for each bleaching product). The samples were stored in a 75% ethanol solution, and the solutions were renewed after 1, 7, and 28 days. The monomer release was analyzed using high performance liquid chromatography. The data were analyzed using repeated measures analysis of variance and least significant difference multiple comparison test (α = 0.05). Monomers were found to be released from both composite resins. The amounts of monomer released were found to decrease over time (P < 0.05); however, the resins were not affected by bleaching, and the released monomers were well below toxic doses.

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Section: Discussionmentioning

confidence: 99%

Section: Monomer Release From Nanohybrid Composites After Bleachingmentioning

confidence: 99%

Monomer release from nanohybrid composites after bleaching

et al. 2019

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“…According to ISO specification, distilled water is an extraction medium for resin-based filling materials, which simulates a humid, intraoral environment containing both saliva and water [ 30 ]. This medium is often used in studies on monomer leaching [ 25 , 28 , 31 ]. Ferracane noticed that fluids in the oral cavity exhibit extraction features that lie between more aggressive organic solvents and water [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Base Monomer Elution from 3 Flowable Bulk-Fill Composite Resins Using High Performance Liquid Chromatography (HPLC)

et al. 2018

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BackgroundThe aim of this study was to evaluate the elution of BisGMA, UDMA, TEGDMA, and HEMA monomers from flowable bulk fill composite resins with different resin matrix compositions, polymerized in 4-mm-thick layers, into 3 elution media.Material/MethodsThree bulk-fill (SDR® (SDR), X-tra base (XB) and BEAUTIFIL-Bulk Flowable (BF)) resin-composites were tested. Cylindrical samples were immersed in 100% ethanol, 75% ethanol, and distilled water. The concentrations of the monomers were measured using the HLPC method (Agilent Technologies 1200 Series) after 1 and 24 h, as well as after 3, 7, 14, and 21 days.ResultsAfter polymerization of the tested resins, there was elution of the BisGMA, UDMA, TEGDMA, and HEMA monomers from the SDR and BF composites, but none of the tested monomers could be detected eluting from XB. The highest penetrations of the polymerized SDR and BF composites were observed in the 100% ethanol solution. This extraction medium eluted the highest amounts of free monomers. Some eluted monomers were not described in the composites Material Safety Data Sheets.ConclusionsThe elution of the residual monomers depended on the resin composition and the materials filler/resin matrix ratio. In composite materials, toxicity assessment should be carried out, and should consider both the material composition as given by the manufacturer, and also the residual monomers that elute from the polymerized material. The elution concentration and time of monomers from composites depended on the solvent used. The highest penetrations of the polymerized SDR and BF composites were observed in the 100% ethanol solution, and this extraction medium eluted the highest amounts of free monomers. The 75% ethanol was a more aggressive medium than water in terms of monomer elution from bulk fill composites.

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“…Although this problem is more serious in anterior restorations, bleaching gel is often applied in posterior regions, such as premolars, and may reach the occlusal and proximal face of these teeth and therefore, posterior restorations. Thus, considering the possibility that the monomers in bulk-fill resins may be eluted after contact with bleaching gels 19 , it is essential to investigate the effects of bleaching agents on the mechanical properties of conventional and bulk-fill resins, especially those of high viscosity. In addition to dentist-supervised bleaching techniques, some over-the-counter (OTC) bleaching products can be sold to the consumer without a dentist's supervision.…”

Section: Introductionmentioning

confidence: 99%

Effect of bleaching protocols on surface roughness and color change of high- and low-viscosity bulk-fill composite resins.

Tavares¹,

França²,

Basting³

et al. 2020

Acta Odontol Latinoam

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The aim of this in vitro study was to evaluate the effect of bleaching protocols on the surface roughness (Ra), color change and surface micromorphology of a low-viscosity bulk-fill composite (Filtek Bulk Fill Flow, 3M ESPE), a highviscosity bulk-fill composite (Filtek Bulk Fill, 3M ESPE) and a conventional nanoparticulate composite resin (control) (Filtek Z350 XT, 3M ESPE). Forty samples of each composite (disks 5 mm in diameter and 2 mm thick) were randomly divided into four groups (n=10), according to bleaching protocol: a) 10% carbamide peroxide gel (Opalescence, Ultradent Products) (2 h/ day, for 14 days); b) 40% hydrogen peroxide gel (Opalescence Boost, Ultradent Products) (three bleaching sessions, once a week, 45 min/session); c) whitening rinse (Listerine Whitening Extreme, Johnson & Johnson) (2 min/day, for 14 days); and d) distilled water (control). The samples were submitted to triplicate readings (Ra and color [CIELAB parameters]) before and after contact with bleaching protocols. Micromorphology was analyzed in a scanning electron microscope (SEM). Ra and color parameters (ΔL, Δa, Δb and ΔE) were analyzed by generalized linear models (α=0.05). The Ra of the high-viscosity bulk-fill was significantly higher than that of the other composites (p<0.05). Ra increased significantly (p<0.05) and surface became more irregular (SEM analysis) in all the composite resins, regardless of the bleaching protocol (p<0.05). The high-viscosity bulk-fill composite resin group had significantly lower ΔE (p<0.05) than the nanoparticulate composite resin group immersed in distilled water. It was concluded that the characteristics of each resin significantly influenced the Ra more than the bleaching protocol. The high-viscosity bulk-fill resin presented minor color change.

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Effect of Opalescence® bleaching gels on the elution of bulk-fill composite components

Cited by 17 publications

References 36 publications

Monomer release from nanohybrid composites after bleaching

Monomer release from nanohybrid composites after bleaching

Analysis of Base Monomer Elution from 3 Flowable Bulk-Fill Composite Resins Using High Performance Liquid Chromatography (HPLC)

Effect of bleaching protocols on surface roughness and color change of high- and low-viscosity bulk-fill composite resins.

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