Results 261 to 270 of about 1,655,272 (299)

Hypersensitivity to dental composites and resin-bonding agents

Dental Update, 2016
Adverse reactions to dental materials are not an uncommon occurrence, although hypersensitivity has gained much renewed interest in light of public concerns over the safety of dental materials. Hypersensitivity can affect both patients and dental professionals and may manifest as either allergic contact dermatitis or stomatitis.
Aisha, Ahsan, Martin, Ashley
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Initiation of Polymerization with Ultrasound in Dental Composite Resin

Biomaterials, Artificial Cells and Immobilization Biotechnology, 1992
A single paste composite resin comprising methacrylate monomers, inorganic fillers, activators and an ultrasonic generator assembled by a piezoceramic transducer and a working tip was developed. The resin can polymerize and harden under irradiation with ultrasound having frequencies from 20 to 50 KHz and intensity from 12 to 40 W/cm2.
L, Guan, J, Li, G, Wu, Z, Hong
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Dental Composite Resins

2012
Abstract This article discusses the composition of the major components of dental composite resins: organic resin matrix, filler, coupling agents, and initiator-accelerator systems. It describes the properties of composite resins that are related to the amount and type of filler and resin-matrix compositions.
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Hygroscopic expansion kinetics of dental resin-composites

Dental Materials, 2014
To evaluate the extent and rate of hygroscopic expansion of resin composites at 37°C.Eight resin composites were examined: 1 micro-hybrid (Bright Light(®)), 5 nano-hybrids (Experimental Vertise™; Nanoceram-Bright(®); Tetric EvoCeram(®); Grandio(®) SO; Ceram X™ duo) and 2 flowables (X-tra base; Venus(®) Diamond Flow).
Alrahlah, A., Silikas, N., Watts, D. C.; id_orcid 0000-0002-9105-2775   +2 more
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The influence of resin chemistry on a dental composite's biodegradation

Journal of Biomedical Materials Research Part A, 2004
AbstractPrevious work reported that commercial dental composite resins containing a urethane‐modified bisGMA (bisphenylglycidyl dimethacrylate)/TEGDMA (triethylene glycol dimethacrylate) (ubis) based monomer system showed a 10‐fold reduction in the release of a bisGMA‐derived product, bishydroxypropoxyphenyl propane (bisHPPP), as compared with that ...
Y, Finer, J P, Santerre
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Ceramic Whisker Reinforcement of Dental Resin Composites

Journal of Dental Research, 1999
Resin composites currently available are not suitable for use as large stress-bearing posterior restorations involving cusps due to their tendencies toward excessive fracture and wear. The glass fillers in composites provide only limited reinforcement because of the brittleness and low strength of glass.
H H, Xu, T A, Martin, J M, Antonucci, F C, Eichmiller   +3 more
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Nanoparticle-reinforced resin-based dental composites

Journal of Dentistry, 2008
TiO(2) nanoparticles treated with the organosilane allyltriethoxysilane (ATES) are used to improve the mechanical properties of dental resin-based composites (RBCs, Z100, 3M ESPE).TiO(2) nanoparticles were sonically dispersed in an ethanol solution containing ATES. The modified particles were washed in pure ethanol and dried before being used as filler.
Yang, Xia, Feimin, Zhang, Haifeng, Xie, Ning, Gu   +3 more
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Post-curing in dental resin-based composites

Dental Materials, 2018
To determine the post-curing in six commercial contemporary resin-based composites (RBCs) using axial shrinkage, the degree of conversion, and Vickers hardness.Five Bulk Fill and one conventional RBCs from three companies were selected with a wide range of filler volume content.
William, Germscheid, Louis Gosse, de Gorre, Braden, Sullivan, Catherine, O'Neill, Richard B, Price, Daniel, Labrie   +5 more
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Composition of Dental Resin-Based Composites for Direct Restorations

2017
Ever since the introduction of light-curable resin-based composites in the 1970s, these mixtures of organic and inorganic phases have continuously evolved to meet the increasing requirements of material design and dental practitioners. However, fundamentally, the chemistry of composite phases has not significantly changed, with material design that ...
Randolph, Luc D., Palin, William M., Leprince, Julian Grégoire   +2 more
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HPLC analysis of dental resin composites components

Journal of Biomedical Materials Research, 1999
Five uncured commercial dental resin composites (two bis-glycidyl methacrylate based products and three non-bis-glycidyl methacrylate based products) were examined for contamination with bisphenol A, which is a known xenobiotic. After the samples were processed with acetonitrile for extraction of their components, high performance liquid chromatography
M, Noda, H, Komatsu, H, Sano
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