Showing papers in "Dental Materials in 2012"

TL;DR: Dental device manufacturing will experience a second revolution when layered fabrication techniques reach the point of being able to produce high quality dental prostheses.

TL;DR: A long survival rate for posterior composite restorations can be expected provided that patient, operator and materials factors are taken into account when the restorATIONS are performed.

TL;DR: It is hypothesized that the next-generation of guided tissue and guided bone regeneration (GTR/GBR) membranes for periodontal tissue engineering will be a biologically active, spatially designed and functionally graded nanofibrous biomaterial that closely mimics the native extra-cellular matrix (ECM).

TL;DR: An overview of aspects of silane coupling agents and surface conditioning in dentistry is given to give an overview of the current surface conditioning methods as well as new surface conditioning techniques to enhance the bonding through conventional silanization approaches.

TL;DR: In vitro cell-materials interaction studies confirmed that the addition of SiO(2) and ZnO to the scaffolds facilitated faster cell proliferation when compared to pure TCP scaffolds, showing increased mechanical strength as well as increased cellular proliferation.

TL;DR: If depth of cure D(ISO) determined by the ISO 4049 method is accurately reflected with bulk fill materials when compared to depth of cures determined by Vickers microhardness profiles is evaluated.

TL;DR: NACP+QADM+NAg nanocomposite was strongly antibacterial and greatly reduced the titer counts, metabolic activity, and acid production of S. mutans biofilms, while possessing mechanical properties similar to commercial composites.

TL;DR: Milling zirconia to full-contour with glazed surface might be an alternative to traditionally veneered restorations in terms of light-transmission, contact wear (restoration and antagonist) and load-bearing capacity.

TL;DR: The Menschutkin reaction provides a facile, convenient means to synthesize new monomers with quaternary ammonium groups for dental and medical applications and has the potential to copolymerize with other methacrylate monomers and produce antibacterial polymers.

TL;DR: These guidelines are required to optimize the recording of fracture features that can be used to differentiate ceramic chipping fracture from bulk fracture and to assist dentists in identifying subsequent treatment that may minimize the need to replace affected restorations.

TL;DR: This article critically analyzes how the effectiveness of adhesive systems is currently measured, to identify gaps in knowledge where new research could be encouraged and to help determine how much degradation is acceptable for clinical success.

TL;DR: The results of this study suggest that HT/HP polymerization could be used to obtain dental resin composite blocks with superior mechanical properties, suitable for CAD/CAM processing.

TL;DR: Through a better understanding of the polymer network formation and property development processes using conventional dimethacrylate monomer formulations, the rational design of improved materials is facilitated with the ultimate goal of achieving dental polymers that deliver enhanced clinical outcomes.

TL;DR: Cuspal deflection resulting from polymerization shrinkage stress may be reduced by an incremental filling technique and by the use of low shrinking composite to obtain optimal clinical outcomes.

TL;DR: T titanium implants showed higher wear at the implant interface following cyclic loading when connected to one-piece zirconia implant abutments compared to titanium abutment, hence damage of the internal implant connection could result in prosthetic failures up to the need of implant removal.

TL;DR: Thermoplastic resinClasps maintained retention over 15,000 joining and separating cycles with lower retention than CoCr clasps, suggesting that the retention of adequately designed resin clAsps might be sufficient for clinical use.

TL;DR: If zirconia is used without veneering material for crowns and fixed dental prostheses (FDPs), the surface must be well-polished if occlusal adjustments with coarse diamonds are performed.

TL;DR: Without compromising dentin bond strength and resin tag formation, the QADM and NAg containing adhesive and primer achieved strong antibacterial effects against microcosm biofilms for the first time.

TL;DR: Critical perspectives on common in vitro research methodologies, including shear bond testing, wear testing, and load-to-failure tests are provided, including Weibull scaling clearly suggests failure involving external surfaces of specimens, not interfacial origins.

TL;DR: A strong inverse correlation between DC and elutable substances in RBCs was demonstrated and the importance of an adequate polymerization (20, 40s) was emphasized, since short curing-times resulted in lower DC and higher amount of eluted substances with toxic potential.

TL;DR: Occlusal "fit" can have structural implications for CAD/CAM crowns; pre-cementation spaces around 50-100 μm being recommended from this study.

TL;DR: It is shown that determination of the depth of cure of resin-based composites needs to take into account the depth at which the transition between glassy and rubbery states of the resin matrix occurs, and a new definition for the "depth of cure" is proposed.

TL;DR: In this paper, the authors developed nanocomposites containing amorphous calcium phosphate (ACP) or calcium fluoride (CaF 2 ) nanoparticles and CHX particles, and investigated Streptococcus mutans biofilm formation and lactic acid production for the first time.

TL;DR: The use of the methylmethacrylate containing primer Luxatemp Glaze & Bond after air-abrasion of PEEK surfaces can be recommended clinically as promising bonding method to PEEK.

TL;DR: To determine by nanoindentation the hardness and elastic modulus of resin-composites, including a series with systematically varied filler loading, plus other representative materials that fall into the categories of flowable, bulk-fill and conventional nano-hybrid types, the group-average elastic moduli and nanohardnesses for bulk- Fill and flowable materials were lower than those for conventional nano

TL;DR: The principles underlying tissue engineering and the current scenario, the challenges and the perspectives of this area in Dentistry are presented.

TL;DR: The viability of a computer-aided and three-dimensional approach for assessing marginal and internal fit of indirect restorations was demonstrated and the obtained results track complex form changes as they occur during laboratory processing.

TL;DR: Although CQ presented higher PD(abs) than TPO, formulations containing TPO exhibited higher reactivity than that with CQ, so trimethylbenzoyl-diphenyl-phosphine oxide requires further investigation, with higher concentrations.

TL;DR: The "bulk-fill" composites exhibited an acceptable creep deformation and within the range exhibited by other resin-composite formulations in comparison with some other types.

TL;DR: Lab testing revealed that different variables like the type of post, the composite cement and the post-surface pre-treatment may influence the cement-post interface, making clear guidelines for routine clinical practice hard to define.