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Investigations in the correlation between Martens hardness and flexural strength of composite resin restorative materials
Resin based composites Flexural strength Martens hardness
2010/11/26
The purpose of this study is to verify the hypothesis that the hardness and flexural strength of composite resin restorative materials are correlated and similarly affected by accelerated aging. With ...
The influence of chemical activation on hardness of dual-curing resin cements
Resin cements Hardness Dental materials
2009/10/20
During the cementation of metallic restorations, the polymerization of dual-curing resin cements depends exclusively on chemical activation. This study evaluated the influence of chemical activation c...
Hardness of a bleaching-shade resin composite polymerized with different light-curing sources
Composite resins Dental materials Hardness
2009/10/19
The microhardness of a bleaching-shade resin composite polymerized with different light-curing units was evaluated. Composite samples (3M ESPE Filtek Supreme) were applied to brass rings (2 mm in thic...
Effect of light-curing method and indirect veneering materials on the Knoop hardness of a resin cement
Resin cements Hardness Composite resins Dental porcelain
2009/10/16
This study evaluated the Knoop hardness of a dual-cured resin cement (Rely-X ARC) activated solely by chemical reaction (control group) or by chemical / physical mode, light-cured through a 1.5 mm thi...
Study of the surface hardness and modulus of elasticity of conventional and microwave-cured acrylic resins
Denture complete Polymethyl methacrylate Hardness Elasticity
2009/10/16
The aim of this study was to evaluate the following acrylic resins: Cl醩sico?/sup>, QC-20?/sup> and Lucitone?/sup>, recommended specifically for thermal polymerization, and Acron MC?/sup> and VIPI-WAVE...
Evaluation of hardness and surface roughness of two maxillofacial silicones following disinfection
Maxillofacial prosthesis Disinfection Hardness
2009/10/16
The purpose of this study was to evaluate the Shore A hardness and surface roughness of two silicones for maxillofacial prosthetic treatment, under the influence of chemical disinfection and storage. ...
Flexural strength and hardness of direct and indirect composites
Composite resins Dental materials Hardness
2009/10/16
The objective of this study was to evaluate the l exural strength
() and hardness (H) of direct and indirect composites, testing the hy-
f potheses that direct resin composites produce higher and ...
Effects of Disinfecting Alginate Impressions on the Scratch Hardness of Stone Models
Alginate impression material Disinfection Scratch hardness
2009/9/14
This study investigated the effects of disinfecting alginate impressions on the scratch depth of resultant stone models. Eleven brands of alginate impression material and two disinfectants, 1% sodium ...
Hardness Development of Dual-cured Resin Cements through Different Thicknesses of Ceramics
Hardness Dual-cured resin cement Ceramic thickness
2009/9/14
This study investigated the Knoop hardness of a thin layer in three dual-cured resin cements (Linkmax HV, Nexus 2, and Variolink II HV) irradiated through or not through different thicknesses (1 throu...
CP Ti was mirror-polished and then abraded with waterproof SiC papers of two different grit sizes: 16 and 3μm. As-polished and abraded surfaces were characterized by means of EPMA, XPS, XRD, and hardn...
Effects of Mica and Glass on Surface Hardness of Acrylic Tooth Material
Acrylic denture teeth Surface hardness Fillers
2009/9/14
The purpose of this study was to evaluate the effects of four different ratios of silanized mica filler and milled glass fiber on the surface hardness of an acrylic denture tooth material. Acrylic res...
Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive
Hardness Young's modulus Nanoleakage Caries-affected dentin Sound dentin
2009/9/14
Biomechanical properties of bonded dentin are important for resin restorations. We hypothesized that there are no differences in the hardness and elasticity of sound and caries-affected primary dentin...
Effect of Inhomogeneity of Light from Light Curing Units on the Surface Hardness of Composite Resin
Light curing unit Light intensity Knoop hardness number
2009/9/11
This study investigated the characteristics of output light from different types of light curing units, and their effects on polymerization of light-activated composite resin. Three quartz-tungsten-ha...
Effects of different solutions on the surface hardness of composite resin materials
Composite resins Surface hardness Solution
2009/9/11
In this study, the surface hardness of five light-cured composite resins were evaluated, namely: filled (Estelite), nanofil (Ælite), unfilled (Valux Plus), hybrid (Tetric ceram), and Ormocer-bas...
An investigation into the effects of polishing on surface hardness and corrosion of orthodontic archwires
Orthodontic alloys Polishing Corrosion
2009/1/7
The purpose of this study was to investigate the effect of surface roughness on the relative corrosion rates of wires of four alloys—stainless steel, nickel titanium, cobalt chromium, and beta tit...