Showing papers in "Dental Materials in 2017"

TL;DR: Different methodologies are compared for the measurement of elastic constants and microstructural characterization of CAD/CAM restorative materials, showing to be complementary tools in the characterization of their crystal phases.

TL;DR: The results suggest that a 3D printable provisional restorative material allows for sufficient mechanical properties for intraoral use, despite the limited 3D printing accuracy of the printing system of choice.

TL;DR: The B3B test has shown to be a reliable and simple method for determining the biaxial strength restorative materials supplied as small CAD/CAM blocks and the strength dependency on specimen size was demonstrated through the calculated effective volume/surface.

TL;DR: The dental adhesive sub-group has identified the micro-tensile bond strength test, especially after subjecting the specimens to a durability challenge, as currently the best practical surrogate measure of dental composite restoration retention.

TL;DR: This project review and critically appraise methods to determine fracture, deformation and wear resistance of dental resin composites in an attempt to provide guidance for investigators endeavoring to study these properties for these materials.

TL;DR: Silver nanoparticles are a promising system with important features such as antimicrobial, anti-inflammatory and antitumor activity, and a potential carrier in sustained drug delivery and there are some aspects of the mechanisms of action of AgNPs, and some important toxicological aspects arising from the use of this system that must be completely elucidated.

TL;DR: High particle size and dry matter content of the L80 slurry allowed made it possible to produce a reliable ceramic by SLA manufacturing with an anisotropic shrinkage, and a density, and flexural strength similar to those of a subtractive-manufactured ceramic.

TL;DR: Correlations between clinical and laboratory outcomes were moderately positive with few significant results, fracture toughness being correlated with clinical fractures and flexural strength with clinical wear, and whether artificial aging enhances the prognostic value needs further investigations.

TL;DR: This guidance document will contribute to a more accurate use of fractography and help researchers to better identify, describe and understand the causes of failure, for both clinical and laboratory-scale situations.

TL;DR: The alloying elements proved to modify the alloy microstructure and to enhance the mechanical properties, improving the hardness and decreasing the elastic modulus of the binary and ternary alloys, respectively.

TL;DR: Graphene can improve the physical, chemical and mechanical properties of biomaterials and holds enormous potential to be used as drug carriers or substrates and scaffolds for cell-based tissue engineering strategies.

TL;DR: Electrospin chitosan (CH) membranes with a low or high degree of fiber orientation are examined for use as a surface layer in GTR membranes, which can ease integration with the periodontal tissue by controlling the direction of cell growth.

TL;DR: Considering the overall results, it is possible to state that the base monomer BisEMA mixed with the co-monomer TEGDMA presented the best performance in terms of all the parameters tested.

TL;DR: This ADM guidance document aims to summarize the aspects related to fatigue degradation of dental ceramics, reviewing the concepts of fatigue testing and furthermore aims to provide practical guidance to young scientists entering into fatigue related research.

TL;DR: The following guidance is meant to aid the researcher in choosing the most appropriate test methods when planning studies designed to assess certain key properties and characteristics of dental resin composites, specifically technique sensitivity and handling during placement, polymerization, and dimensional stability.

TL;DR: The finding proved that HA-PDA-Ag nanowires could serve as functional nanofillers for composite resins, which should help much in developing materials for satisfactory long-term clinical restorations.

TL;DR: The ultra-structure of composite CAD-CAM blocks was investigated with special attention to the effect of sandblasting on the surface topography and of silanization on the bonding performance.

TL;DR: The cytotoxicity and antibacterial properties of nano-silver-coated polyetheretherketone (PEEK) produced through magnetron sputtering are investigated and a theoretical basis for its use in clinical applications is provided.

TL;DR: Evaluating whether factors of the production methods or the material compositions affect load at fracture, fracture modes, internal fit or crown margins of monolithic zirconia crowns found that reduction of margin flaws will improve fracture strength of monoliths and thereby increase clinical success.

TL;DR: A wise use of the new tools, especially the clinical risk assessment, should aim at preventing the patients, professionals and the environment from harm but should not block the development of novel materials.

TL;DR: Fracture mechanics theory and FT methodologies were critically reviewed to introduce basic fracture principles and determine the main advantages and disadvantages of existing FT methods from the standpoint of the dental researcher.

TL;DR: Investigating the fatigue and fracture resistance of different CAD/CAM-materials as implant- or tooth-supported molar crowns with respect to the clinical procedure (screwed/bonded restoration) found no significant differences between the individual groups.

TL;DR: The designed scaffolds fulfill the bioavailability of VEGF required for vascularization in the early stages of tissue regeneration and can be considered as a potential candidate for regeneration of craniofacial defects.

TL;DR: Assessing surface/subsurface damage after grinding with diamond discs on five CAD-CAM restorative materials and to estimate potential losses in strength based on crack size measurements of the generated damage to understand surface and subsurface damage which have the potential of lowering the strength of the ceramic.

TL;DR: Based on model worst case mass-based calculations, the exposure of dental practice personnel and patients to nanoparticles through intraoral grinding/polishing and wear is low to negligible, however, more research is needed, especially on vulnerable groups (asthma or COPD).

TL;DR: Graphene induced osteogenic and not odontoblastic differentiation of DPSC without the use of chemical inducers for osteogenesis and has the potential to be used as a substrate for craniofacial bone tissue engineering research.

TL;DR: These results, coupled with acid-neutralization and good mechanical properties shown previously, indicate that the NACP-based nanocomposites are promising for restorations to inhibit caries and protect tooth structures.

TL;DR: A forward-looking perspective of emerging topics in biomaterials sciences, such as bioinspired materials design and fabrication, 3D bioprinting and microfabrication, and briefly discuss recent developments on the emerging field of organs-on-a-chip are provided.

TL;DR: The influence of resin based and lithium disilicate materials on the stress and strain distributions in adhesive class II mesio-occlusal-distal (MOD) restorations is studied using numerical finite element analysis (FEA).

TL;DR: The MDP-base primer shows a relevant function in facilitating POZr bonding and enhancing resin-zirconia bonding, and increased the surface wettability to water and resin, with M and SM presenting superhydrophilic surfaces.