Sorption and solubility of resin-based restorative dental materials

Toledano, Manuel; Osorio, Raquel; Osorio, Estrella; Fuentes, Ma Victoria; Prati, Carlo; Garcı́a-Godoy, Franklin

doi:10.1016/s0300-5712(02)00083-0

Cited by 167 publications

(159 citation statements)

References 31 publications

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“…Solubility is infl uenced by the leachable species, the solvent and composite solubility parameter, the quality of the resin-fi ller interface, immersion time periods and temperature. 16,19,20 The solubility values, obtained in this study by mass variation percentage, showed that P90 (0.02%) and P60 (0.06%) were stable; there were no signifi cant differences between them. The low solubility and stability of silorane in aqueous systems has been reported before.…”

Section: Statistical Analysesmentioning

confidence: 61%

Do new matrix formulations improve resin composite resistance to degradation processes?

et al. 2013

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The aim of this study was to determine the degradation resistance of three new formulations-silorane-, Ormocer-and dimer-acidbased materials-and compare them to the traditional dimethacrylatebased materials. One silorane-(Filtek P90, P90), one Ormocer-(Ceram-X, CX), one dimer-acid-(N'Durance, ND) and two dimethacrylate-based (Filtek P60, P60; Tetric Ceram, TC) materials were investigated. Water sorption (Wsp) and solubility (Wsl) were determined after the materials were immersed in water for 28 days. Knoop hardness (KH) was determined before and after 24 h immersion in pure ethanol. The flexuralstrength (FS) was determined by the bending test after one-week storage in a dry environment or after one-week immersion in pure ethanol. Data were submitted to analysis of variance (ANOVA) and Tukey's test (95%). The three new formulations showed lower Wsp than the dimethacrylatebased formulation. CX (0.50 ± 0.17%) and ND (0.72 ± 0.19%) exhibited the lowest Wsp, whereas P90 (0.02 ± 0.03%) and P60 (0.04 ± 0.03%) showed the lowest Wsl. All resins showed reduced Knoop hardness number (KHN) after ethanol immersion. P60 presented the lowest decrease in KH value (19 ± 5%). TC (48 ± 3%) and P90 (39 ± 9%) showed the highest KHN decrease after ethanol storage. The FS of CX, ND and TC were affected by ethanol storage. The new formulations did not improve the degradation resistance, as compared with the traditional methacrylatebased materials.

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Section: Statistical Analysesmentioning

confidence: 61%

Do new matrix formulations improve resin composite resistance to degradation processes?

et al. 2013

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“…12 The acidic degradation begins with water absorption that diffuses internally through the matrix, filler interfaces, pores, and other defects, accelerated by a low pH and causing filler-matrix debonding or even hydrolytic degradation of the filler-matrix interface. 32,33 No statistically significant difference was found among the roughness values of all materials tested after the pH cycling (Table 2). It is likely that there was no statistically significant difference among the roughness values as a result of the large standard deviations obtained, mainly for Fuji IX GP and Ketac N100.…”

Section: Discussionmentioning

confidence: 92%

Effect of Chemical and Mechanical Degradation on Surface Roughness of Three Glass Ionomers and a Nanofilled Resin Composite

Carvalho¹,

Sampaio²,

Fucio³

et al. 2012

Operative Dentistry

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The nanofilled glass ionomer provides intermediate resistance to chemical and mechanical degradation among the glass ionomer cements (conventional and resin-modified) and nanofilled composite. SUMMARYNanofillers have been incorporated into glass ionomer (GI) restorative materials to improve their mechanical and surface properties. The aim of this present laboratory study was to compare the superficial roughness (Ra) of nanofilled GI (Ketac N100) with that of conventional GI (Fuji IX GP), resin-modified GI (Vitremer), and a nanofilled resin composite (Filtek Supreme) after pH cycling and toothbrush abrasion. Ten specimens of each material were made using Teflon molds, which were polished using aluminum-oxide abrasive disks. Three measurements of Ra were made of each specimen to serve as baseline values. The specimens were submitted to pH cycling for 10 days in a demineralization solution for six

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“…In light of the fact the filler particles do not absorb a significant amount of water, the most probable site at which additional water is accommodated is in the interface between the inorganic filler particle and the polymer matrix 39 . The findings of Toledano et al 37 suggest that the matrix and the filler particles are not always effectively coupled. In general, water sorption is a diffusion-controlled process 37 , and the diffusion coefficient of water in resin composites tends to increase, followed by an equilibrium in water sorption values 34 .…”

mentioning

confidence: 99%

“…The findings of Toledano et al 37 suggest that the matrix and the filler particles are not always effectively coupled. In general, water sorption is a diffusion-controlled process 37 , and the diffusion coefficient of water in resin composites tends to increase, followed by an equilibrium in water sorption values 34 . New formulations of monomers were developed by modifying the chemical structure of certain monomers and/or replacing them.…”

mentioning

confidence: 99%

“…These uncured monomers may be leached at a higher rate in the mouth due to the greater solubility 36 of these monomers in saliva, compared with the rate observed when they are exposed to water molecules. Depending on the material, a larger number of air voids can form during the polymerization of resin composites due to shrinkage 37 . Clinically, the release of the composite components influences the initial dimensional change of the composite as well as the clinical performance and the long-term esthetic of the restorations 34 .…”

mentioning

confidence: 99%

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Hydrolytic degradation of a resin composite as a function of the curing tip distance and aging

et al. 2011

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The influence of curing tip distance and storage time on the hardness of a composite was evaluated. Composite samples (Filtek Z250) were polymerized at different distances (5, 10, and 15 mm), compared with a control group (0 mm), and stored in distilled water at 37 ° C for 24 hours. The Knoop-hardness of top and bottom surfaces was assessed (25 g/30 s). Specimens were stored in distilled water for 6 and 12 months and were retested. Hardness was found to be negatively influenced by both curing tip distance and storage time. Despite similar values at 24 hours, differences in hardness values compared with the control group appeared over time. In comparing both surfaces, hardness proved to be greater at the top surface for all groups. Composites with similar initial hardness values can degrade very differently after water storage. The higher the photoactivation distance and storage time, the worse the mechanical property.

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Sorption and solubility of resin-based restorative dental materials

Cited by 167 publications

References 31 publications

Do new matrix formulations improve resin composite resistance to degradation processes?

Do new matrix formulations improve resin composite resistance to degradation processes?

Effect of Chemical and Mechanical Degradation on Surface Roughness of Three Glass Ionomers and a Nanofilled Resin Composite

Hydrolytic degradation of a resin composite as a function of the curing tip distance and aging

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