Molecular layer deposition of photoactive metal-naphthalene hybrid thin films -

Abstract We here report on photoactive organic-inorganic hybrid thin films prepared by the molecular layer deposition (MLD) method. The new series of hybrid films deposited using 2,6-naphthalenedicarboxylic acid (2,6-NDC) and either hafnium chloride (HfCl4), yttrium tetramethylheptanedionate (Y(thd)3) or titanium chloride (TiCl4) were compared with the known zirconium chloride (ZrCl4) based system. All metal-naphthalene films are […]

Stainless-steel crowns in children: Norwegian and Finnish dentists’ knowledge, practice and challenges -

Stainless-steel crowns (SSCs) are recommended for restorative treatment of young teeth severely affected by caries, fractures or dental developmental disorders (DDDs). However, despite recommendations and clinical evidence, SSCs are not widely used by general dentists, who favour extraction and more conventional restorations. The present study aimed to investigate the views of and use of SSCs among Norwegian and Finnish dentists.

Hvor mye monomer kan lekke fra en protese? -

Protesematerialer inneholder ureagert monomer som kan lekke ut i munnhulen og gi bivirkninger, men i hvor stor grad skjer dette? Tanntekniske laboratorier fremstilte protesematerialer etter sin vanlige metode og NIOM analyserte mengde ureagert monomer, såkalt restmonomer. Kaldakryl hadde større mengde restmonomer enn kokakryl og derfor et større potensiale for å gi bivirkninger. Ett av produktene […]

Adhesion of Escherichia Coli to Nanostructured Surfaces and the Role of Type 1 Fimbriae -

In this study a method of producing a large number of identical nanostructured surfaces is presented. E. coli wild type and deletion mutants of the type 1 fimbriae monomers FimA or FimH were tested for their ability to adhere to such surfaces with different interpillar distance of 100, 250, and 500 nm, respectively. An increase in interpillar distance (reduced surface coverage) was associated with reduced adhesion of E. coli wild type and the deletion mutants. In addition, the presence of a functional type 1 fimbria decreased adhesion to the nanopatterned surfaces in comparison to deletion mutants, leading us to the conclusion that there is a relationship between presence of a functional fimbriae and adhesion towards tested surfaces. The hypothesis that the presence of fimbriae had an effect on bacterial attachment to nanostructured surfaces was verified. These current results could provide insight into development of new nano-patterned structures with anti-adhesion bacterial properties.

In vitro abrasivity and chemical properties of charcoal-containing dentifrices -

The use of charcoal for oral hygiene purposes has long traditions in several countries. Products containing charcoal are constantly being introduced to the market, advertising various advantageous properties, such as a whitening effect and detoxification.