Water sorption/solubility of dental adhesive resins

Malacarne, Juliana; Carvalho, Ricardo Marins de; Góes, Mário Fernando de; Svizero, Nádia da Rocha; Pashley, David H.; Tay, Franklin R.; Yiu, Cynthia Kar Yung; Carrilho, Marcela Rocha de Oliveira

doi:10.1016/j.dental.2005.11.020

Cited by 494 publications

(554 citation statements)

References 33 publications

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“…Solubility parameter is expressed as ␦/MPa 1/2 [11,12]. Water is known to be used as an aging media in several studies [10,[13][14][15], ethanol and Methyl ethyl ketone (MEK) are known to represent food simulating solvents and cause an extreme dietary effect.…”

Section: Introductionmentioning

confidence: 99%

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

2016

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Section: Introductionmentioning

confidence: 99%

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

2016

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“…Thus, the behavior of adhesives in the presence of different contents of water is very crucial for the success of a bonded restoration. During the past decade, much research has been performed to evaluate the effect of water on dentin adhesives and composites [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…During polymerization, water sorption and diffusion of methacrylated-based adhesive resins were found to be related to the hydrophobicity or hydrophilicity of the adhesive [9]. Water absorption in resins has negative effects on their mechanical properties: the more water the polymers absorb, the mechanical properties decrease [10][11][12][13]16,17].…”

Section: Introductionmentioning

confidence: 99%

Effects of water content and initiator composition on photopolymerization of a model BisGMA/HEMA resin

Guo¹,

Wang²,

Spencer³

et al. 2008

Dental Materials

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Aims-The purpose of this study was to evaluate the effects of photoinitiator type and water content on the polymerization rate (R p ) and degree of conversion (DC) of a model BisGMA/HEMA-based resin.Materials and methods-The comonomer mixture consisted of BisGMA/HEMA (60/40 by weight). Different two-or three-component photoinitiator systems were incorporated. Twocomponent systems were 0.5% CQ (camphorquinone) and 0.5% DMAEMA (2-(dimethylamino) ethyl methacrylate) or 0.5% CQ and 0.5% 4E (Ethyl 4-dimethylaminobenzoate). The threecomponent systems were added 1% DPIHP (diphenyliodonium hexafluorophosphate) to the above systems. Each system was tested as made, or after addition of 5, 10, 15wt% water. When cured under a conventional dental light, the R p and DC of each formulation was determined using time-resolved attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy.Results-For mixtures containing two-component initiator systems, when the hydrophobic initiator CQ was used in combination with hydrophilic DMAEMA, R p s and DCs were dramatically decreased as a function of water content. The R p s and DCs of the hydrophobic CQ/4E system were higher than those of the CQ/DMAEMA system in the presence of water. For three-component initiator systems, incorporation of DPIHP enhanced the polymerization of all mixtures in the presence of water compared to their counterpart two-component initiators. Interestingly, the CQ/DMAEMA caused greater DC and Rp when DPIHP was used.Significance-The hydrophobicity/hydrophilicity of photoinitiator components significantly affects both the DC as well as R p when in the presence of water. The results indicate that formulation of photoinitiator components should be based on the effectiveness of the bonding systems under both dry and wet conditions.

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“…However, the polymer network absorbs water and chemical components from the environment, which may cause deleterious effects on the structure and compromises the polymeric material function, including chemical, physical or volumetric changes (25). The higher water sorption of SAFCs may be explained by the addition of ionic hydrophilic monomers in the polymer network, increasing the material's affinity to water produced by higher formation of hydrogen bonds (24).…”

Section: Discussionmentioning

confidence: 99%

“…All self-adhesive materials presented higher water sorption than the conventional ones. In a resin composite, the polymer network should ideally be insoluble and possess chemical and thermal stabilities (24). However, the polymer network absorbs water and chemical components from the environment, which may cause deleterious effects on the structure and compromises the polymeric material function, including chemical, physical or volumetric changes (25).…”

Section: Discussionmentioning

confidence: 99%

Influence of Photoinitiator System on Physical-Chemical Properties of Experimental Self-Adhesive Composites

et al. 2017

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The aim of this study was to determine the influence of photoinitiator systems on physical-chemical properties of flowable composites. Conventional (CFC), composed by bisphenol-glycidyl dimethacrylate (BisGMA)+triethyleneglycol dimethacrylate (TEGDMA), and self-adhesive (SAFC), composed by BisGMA+TEDGMA+bis[2-(methacryloyloxy) ethyl] phosphate (2MP), flowable composites were developed. Five photoinitiator systems were tested: camphorquinone (CQ), ethyl-4-dimethylaminobenzoate (EDMAB), diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), phenylbis (2,4,6-trimethylbenzoyl)phosphine oxide (BAPO), CQ+EDMAB+TPO and CQ+EDMAB+BAPO. A two-peak LED was used; degree of conversion (DC) and the maximum polymerization rate (RP max ) were determined by nearinfrared spectroscopy. For the yellowing degree a spectrophotometer was used. Water sorption (Wsp) was obtained after 30 days of water storage (n=5). Data were submitted to two-way analysis of variance and Tukey's test (α=0.05). BAPO presented the highest DC and RP max values for both series. SAFCs presented lower DC and RP max for CQ+EDMAB-based materials. Greater yellowing was observed for SAFCs compared with CFCs, except for BAPO. Greater Wsp was observed for SAFCs compared with CFCs. The photoinitiator did not influence Wsp for CFCs, but TPO and BAPO presented the highest Wsp in SAFCs. The photoinitiator system affected differently the physical-chemical properties of CFCs and SAFCs.

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Water sorption/solubility of dental adhesive resins

Cited by 494 publications

References 33 publications

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

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

Effects of water content and initiator composition on photopolymerization of a model BisGMA/HEMA resin

Influence of Photoinitiator System on Physical-Chemical Properties of Experimental Self-Adhesive Composites

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