Resin-based cements – properties affecting clinical success of indirect restorations -

Resin-based cements are frequently used for cementing indirect restorations, especially when the restorations are made of all-ceramic material. The cement has many important roles, e.g. prevent loosening of the restoration and provide optical matching with tooth substance or mask discoloration. Pre-treatment of tooth substance and restoration, cement composition and strength, mixing and application method, depth […]

How French dentists manage defective restorations: Evidence from ReCOL the French dental practice-based research network– –A survey study -

Repair of DRs is a conservative approach to increase the longevity of these restorations. Despite its limitations, the present study indicates that a significant proportion of Fr-GDPs still do not make sufficient use of dental restoration repair on a routine basis. A lack of knowledge of the concept seems to explain at least part of this situation.

Effect of chlorhexidine digluconate on antimicrobial activity, cell viability and physicochemical properties of three endodontic sealers -

The main hypothesis of the study as rejected as exposure to CHX affected sealers’ properties. CHX in contact
with sealer surfaces improved the antibacterial properties of the sealer leachates and reduced cell viability for all sealer leachates, except for freshly mixed PCS. Among the tested sealers, BioRoot RCS leachates presented the highest antibacterial properties and cell viability with and without CHX contact.

Photoactive Zr-aromatic hybrid thin films made by molecular layer deposition -

In this work, we have developed a new MLD process for fabricating photoactive hybrid thin films based on Zr clusters and aromatic 25D-BDC organic linkers. The amorphous and uniform films display high absorption in the visible part of the spectrum. Moreover, we show that the type of the organic ligand and its functional groups can be used to tune the optical properties of Zr-organic hybrids, as shown by the Zr-2A-BDC and Zr-26-NDC systems in this work.

Potential of «universal» bonding agents for composite repair -

In this in vitro study, testing shear bond strength of composite-to-composite bonding, the new universal bonding agents performed similar and for some agents better than the ‘Gold Standard’, 3-step etch-and-rinse bonding agent. New simplified bonding procedures seem reliable for repair of composite.

Optical and mechanical properties of multi-layer zirconia -

Zirconia currently holds a significant portion of the market for fixed dental prostheses in Norway, and the types of dental zirconia available are increasing. Advertising slogans such as high translucent”, “super translucent”, and “ultra translucent”, among others, are commonly used to describe today’s dental zirconias. In addition, the term “multi-layer zirconia” is used to describe […]

Sintering temperature accuracy and its effect on translucent yttria-stabilized zirconia: Flexural strength, crystal structure, tetragonality and light transmission -

The aim of this study was to investigate how lower and higher sintering temperature deviations in dental furnaces compared to the recommended firing protocols affected certain material properties of different translucency, chemical composition and recommended sintering temperatures, under the null hypothesis that there will not be any differences in properties investigated between the studied groups.

Protein-coated nanostructured surfaces affect the adhesion of Escherichia coli -

Nanotopography influences on bacterial adhesion were investigated with surfaces with controlled interspatial nanopillars distances. Surfaces were coated with proteins (fibrinogen, collagen, serum and saliva) prior to E. coli adhesion under flow conditions. PiFM provided chemical mapping and showed that proteins adsorbed both between and onto the nanopillars with a preference to areas between the nanopillars. E. coli adhered least to protein-coated areas with low surface nanopillar coverage, most to surfaces coated with saliva, while human serum led to the lowest adhesion. Protein-coated nanostructured surfaces affected the adhesion of E. coli.

Wear particle release at the interface of dental implant components: Effects of different material combinations. An in vitro study -

The objective of this study was to evaluate the effect of combining implant and abutment materials on wear and particle release in a dynamical loading setup.

The dentine-sealer interface: Modulation of antimicrobial effects by irrigation -

The aim of this study was to assess whether sodium hypochlorite (NaOCl) or chlorhexidine (CHX) and two irrigation protocols may alter the antibacterial properties of dentine and three endodontic sealers using a novel ex vivo tooth model.

Shear bond strength of resin bonded zirconia and lithium disilicate – effect of surface treatment of ceramics and dentin -

The purpose of the study was to investigate the effect of ceramic surface pretreatment, effect of resin cement and dentin surface roughness on shear bond strength.

Hvordan utføre rettsodontologisk identifisering av personer uten tannrestaureringer? -

The most commonly performed task for forensic dentists in Norway is identification of deceased persons. Forensic dental identification of a victim is based on an objective comparison of the deceased’s dental status with collected dental information from a missing person. Until now, dental identification has been established mostly based on restorative treatment seen in the […]

3D printing i odontologi -

The development of digital techniques in dentistry is rapid. The use of 3D-printing for the production of resin-based constructions has become more widespread in recent years and new materials, printers and accessories are constantly becoming available.