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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Watts, Dc.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (116/116 displayed)
- 2024Properties of model E-glass fiber composites with varying matrix monomer ratioscitations
- 2024Effects of two dentifrices on the surface properties and staining susceptibility of polymer‐based materialscitations
- 2024Thermography and conversion of fast-cure composite photocured with quad-wave and laser curing lights compared to a conventional curing lightcitations
- 2023Osseointegration of photodynamic active biomaterials for bone regeneration in an animal bone model over a period of 12 monthscitations
- 2023Effect of acidic media on flexural strength and fatigue of CAD-CAM dental materialscitations
- 2023Luting laminate veneers: do resin-composites produce less polymerization stress than resin cements?citations
- 2022Is the radiopacity of CAD/CAM aesthetic materials sufficient?citations
- 2022Effects of three food-simulating liquids on the roughness and hardness of CAD/CAM polymer compositescitations
- 2021Optimizing the fitting-surface preparation of zirconia restorations for bonding to dentincitations
- 2021Material behavior of resin composites with and without fibers after extended water storagecitations
- 2021Influence of curing modes on thermal stability, hardness development and network integrity of dual-cure resin cements.citations
- 2020Bis(4-methyl phenyl)iodonium as an alternative component to diphenyliodonium in camphorquinone-based ternary initiating systemscitations
- 2020Stress Distributions for Hybrid Composite Endodontic Post Designs with and without a Ferrule: FEA Studycitations
- 2020Nanotechnology in Dentistry: Present and Future Perspectives on Dental Nanomaterials
- 2020Outcomes of Ultra-Fast (3 s) Photo-Cure in a RAFT-Modified Resin-Compositecitations
- 2020Limited reciprocity in curing efficiency of bulk-fill resin-compositescitations
- 2019Viscoelastic stability of pre-cured resin-composite CAD/CAM structurescitations
- 2019Hardness and fracture toughness of resin-composite materials with and without fiberscitations
- 2019Reporting of light irradiation conditions in 300 laboratory studies of resin-compositescitations
- 2018FE analysis of conceptual hybrid composite endodontic post designs in anterior teethcitations
- 2018Antimicrobial photodynamic active biomaterials for periodontal regenerationcitations
- 2017Academy of Dental Materials guidance—Resin composites: Part I—Mechanical propertiescitations
- 2017Academy of Dental Materials Guidance—Resin Composites: Part II— Technique Sensitivity (Handling, Polymerization, Dimensional Changes)citations
- 2017Trends in restorative composites researchcitations
- 2017Mechanical behavior of bulk direct composite versus block composite and lithium disilicate indirect Class II restorations by CAD-FEM modeling.citations
- 2016Effect of diphenyliodonium hexafluorphosphate on resin cements containing different concentrations of ethyl 4-(dimethylamino)benzoate and 2-(dimethylamino)ethyl methacrylate as co-initiators
- 2016Polymerization shrinkage kinetics andshrinkage-stress in dental resin-compositescitations
- 2016Effect of diphenyliodonium hexafluorophosphate on the physical and chemical properties of ethanolic solvated resins containing camphorquinone and 1-phenyl-1,2-propanedione sensitizers as initiatorscitations
- 2016Surface properties of tricalcium phosphate and hydroxyapatite resin composites
- 2015Let there be More Light!
- 2014Colonization of Enterococcus faecalis in a new SiO/SiO2- microtube in vitro model system as a function of tubule diametercitations
- 2014Hygroscopic expansion kinetics of dental resin-compositescitations
- 2014Post-cure depth of cure of bulk fill dental resin-compositescitations
- 2014Reduced polymerization stress of MAPO-containing resin composites with increased curing speed, degree of conversion and mechanical propertiescitations
- 2014A method for calculating the compliance of bonded-interfaces under shrinkage: Validation for Class i cavitiescitations
- 2014Temperature-dependent polymerization shrinkage stress kinetics of resin-compositescitations
- 2014Rheological properties of resin composites according to variations in composition and temperaturecitations
- 2013Viscoelastic stability of resin-composites aged in food-simulating solventscitations
- 2013The effect of smear layer on the push-out bond strength of root canal calcium silicate cementscitations
- 2013Antibacterial effect of different root canal sealers on three bacterial speciescitations
- 2013Evaluation of UDMA's potential as a substitute for Bis-GMA in orthodontic adhesivescitations
- 2012Marginal and internal fit of pressed lithium disilicate partial crowns in vitro: A three-dimensional analysis of accuracy and reproducibilitycitations
- 2012Creep deformation of restorative resin-composites intended for bulk-fill placementcitations
- 2012Effect of resin-composite filler particle size and shape on shrinkage-stresscitations
- 2012Effects of thread features in osseo-integrated titanium implants using a statistics-based finite element methodcitations
- 2012Simultaneous determination of polymerization shrinkage, exotherm and thermal expansion coefficient for dental resin-compositescitations
- 2012Nanomechanical properties of dental resin-compositescitations
- 2012Resin-composite cytotoxicity varies with shade and irradiancecitations
- 2012Creep of experimental short fiber-reinforced composite resincitations
- 2012Release of metronidazole from electrospun poly(l-lactide-co-d/l-lactide) fibers for local periodontitis treatmentcitations
- 2012Morphology and structure of polymer layers protecting dental enamel against erosioncitations
- 2012Viscoelastic stability of resin-composites under static and dynamic loadingcitations
- 2012Nanoindentation creep versus bulk compressive creep of dental resin-compositescitations
- 2012Finite element analysis of bonded model Class i 'restorations' after shrinkagecitations
- 2012Shrinkage strain - Rates study of dental composites based on (BisGMA/TEGDMA) monomerscitations
- 2011Mechanical behavior of post-restored upper canine teeth: A 3D FE analysiscitations
- 2011Experimental and FE shear-bonding strength at core/veneer interfaces in bilayered ceramicscitations
- 2011Acids with an equivalent taste lead to different erosion of human dental enamelcitations
- 2011A method for assessing force/work parameters for stickiness of unset resin-compositescitations
- 2011Network structures of Bis-GMA/TEGDMA resins differ in DC, shrinkage-strain, hardness and optical properties as a function of reducing agentcitations
- 2011Setting kinetics and shrinkage of self-adhesive resin cements depend on cure-mode and temperaturecitations
- 2011Surface integrity of solvent-challenged ormocer-matrix compositecitations
- 2011Microleakage after thermocycling of cemented crowns - A meta-analysiscitations
- 2011Numerical fatigue 3D-FE modeling of indirect composite-restored posterior teethcitations
- 20113D-FE analysis of soft liner-acrylic interfaces under shear loadingcitations
- 2011International dental standards-order out of chaos?citations
- 2011Degradation resistance of silorane, experimental ormocer and dimethacrylate resin-based dental composites.citations
- 2010A laboratory evaluation of the physical and mechanical properties of selected root canal sealerscitations
- 2010Stickiness of dental resin composite materials to steel, dentin and bonded dentincitations
- 2009Effects of monomer ratios and highly radiopaque fillers on degree of conversion and shrinkage-strain of dental resin compositescitations
- 2009Effect of nanofillers' size on surface properties after toothbrush abrasion
- 2009Spatial and cure-time distribution of dynamic-mechanical properties of a dimethacrylate nano-compositecitations
- 2009Cytotoxicity of four categories of dental cementscitations
- 2009Bond-disruptive stresses generated by resin composite polymerization in dental cavitiescitations
- 2009Effect of filler particle size and morphology on force/work parameters for stickiness of unset resin-compositescitations
- 2009Sequential software processing of micro-XCT dental-images for 3D-FE analysiscitations
- 2009Effect of resin-composite filler particle size and shape on shrinkage-straincitations
- 2009Edge strength of indirect restorative materialscitations
- 2009Measurement of the full-field polymerization shrinkage and depth of cure of dental composites using digital image correlationcitations
- 2009Cytotoxic effects of dental bonding substances as a function of degree of conversioncitations
- 2008Effect of nanofiller fractions and temperature on polymerization shrinkage on glass fiber reinforced filling materialcitations
- 2008Edge strength of resin-composite marginscitations
- 2008Polymerization shrinkage of experimental short glass fiber-reinforced composite with semi-inter penetrating polymer network matrixcitations
- 2008Initial versus final fracture of metal-free crowns, analyzed via acoustic emissioncitations
- 2008Cytotoxicity of metal ions to human oligodendroglial cells and human gingival fibroblasts assessed by mitochondrial dehydrogenase activitycitations
- 2008Is a "flexible" glass fiber-bundle dowel system as retentive as a "rigid" quartz fiber dowel system?citations
- 2008Correlation of filler content and elastic properties of resin-compositescitations
- 2008Porosities and bonding of maxillofacial silicone with embedded glass fibre-bundles
- 2008In-depth hardness profiles of Stainless Steel and Ni-Ti endodontic instrument cross-sections by nano-indentationcitations
- 2008Quantitative determination of radio-opacity: Equivalence of digital and film X-ray systemscitations
- 2008Axial shrinkage-stress depends upon both C-factor and composite masscitations
- 2007Surface characterization of precious alloys treated with thione metal primerscitations
- 2007Radiopacity evaluation of bis-GMA/TEGDMA/opaque mineral filler dental compositescitations
- 2007Post-polymerization of dental resin composite evaluated with nanoindentation and micro- Raman spectroscopy
- 2007Synthesis, characterization, shrinkage and curing kinetics of a new low-shrinkage urethane dimethacrylate monomer for dental applicationscitations
- 2007The effect of a leucite-containing ceramic filler on the abrasive wear of dental compositescitations
- 20073D-marginal adaptation versus setting shrinkage in light-cured microhybrid resin compositescitations
- 2007Cytotoxicity of resin composites as a function of interface areacitations
- 2006A new kinetic model for the photopolymerization shrinkage-strain of dental composites and resin-monomerscitations
- 2006Immediate versus water-storage performance of Class V flowable composite restorativescitations
- 2005Shrinkage strain-rates of dental resin-monomer and composite systemscitations
- 2005[Microstructure and mechanical property of a new IPS-Empress 2 dental glass-ceramic].
- 2005Reaction kinetics and mechanics in photo-polymerised networkscitations
- 2004Resin composite monomers alter MTT and LDH activity of human gingival fibroblasts in vitrocitations
- 2004Stress distributions in adhesively cemented ceramic and resin-composite class II inlay restorations: A 3D-FEA studycitations
- 2003Multi-technique characterization of retrieved bone cement from revised total hip arthroplastiescitations
- 2003Stickiness prior to setting of some light cured resin-compositescitations
- 2003In vitro characterization of two laboratory-processed resin compositescitations
- 2003Photo-polymerization shrinkage-stress kinetics in resin-composites: Methods developmentcitations
- 2001Intraoral aging of the inner headgear component: A potential biocompatibility concern?citations
- 2001AFM and SEM study of the effects of etching on IPS-Empress 2™ dental ceramiccitations
- 2000Light intensity effects on resin-composite degree of conversion and shrinkage strain
- 2000Degree of cure of orthodontic adhesives with various polymerization initiation modes
- 2000Dimensional changes of resin/ionomer restoratives in aqueous and neutral media
- 2000High pressure liquid chromatography of dentin primers and bonding agents
- 2000Optimal specimen geometry in bonded-disk shrinkage-strain measurements on light-cured biomaterials
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article
Light intensity effects on resin-composite degree of conversion and shrinkage strain
Abstract
Objective: The aim of this study was to investigate the relationship between the degree of conversion (DC) and shrinkage strain values of two representative resin-composites when irradiated by two light intensity levels, for different time periods. Methods: The DC of Z100 and Tetric Ceram was measured by FTIR spectroscopy immediately post-cure and shrinkage strain values were obtained continuously for 30 min from photoinitiation with the bonded-disk technique. All samples were photopolymerized at an initial temperature of 23°C with the Elipar Highlight unit under the following modes of variable light intensity (I) 40 s at 750 mW/cm2; (II) a two-step 'soft-start' irradiation mode of 10 s at 200 mW/cm2 plus 30 s at 750 mW/cm2; (III) 40 s at 200 mW/cm2; and (IV) 10 s at 200 mW/cm2. Temperature effects of the light and curing exotherm were not eliminated. Results: Mode II of irradiation did not reduce the DC for each material, relative to the values obtained with mode I (p > 0.05). The corresponding shrinkage strain values after 30 min were also not significantly different (p > 0.05). However, the effects of reduced light intensity levels for 10 s and 40 s (modes III and IV), were in agreement with previous findings implying reduced shrinkage strain levels. For both resin composites, data from all curing times and light-intensities gave a linear regression relationship (with r2 > 0.99) between the bonded-disk shrinkage strain versus DC values. Significance: For the materials and light-intensities studied, the correlation between DC and shrinkage strain values means that some reductions in the problems of shrinkage may be achieved by an acceptable reduction in DC. However, this must also be consistent with generating adequate curing performance in the resin-network. Nevertheless, DC is not the exclusive parameter describing network character and a fuller understanding of the latter is an important research goal. © 2000 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.