Corrosion of dental aluminium bronze in neutral saline and saline lactic acid. -

OBJECTIVE: To compare the corrosion behaviours of two aluminium bronze, dental casting alloys during a standard immersion test and for immersion in neutral saline.

Bond strength of composite luting cement to zirconia ceramic surfaces -

Treatment of zirconia ceramic surfaces with plasma spraying or a low fusing porcelain pearl layer significantly increased the bond strength of resin cement to the ceramic surface.

Toxicity of endodontic filling materials -

The toxicity of endodontic materials is reviewed. The patient may be exposed by constituents leaching from the unset and set sealer and by accidental overfilling of the root canal. For most patients the exposure is believed to be below the threshold for a toxic effect.

NIOM i endring. Nytt fra NIOM -

NIOM i endring
NIOM har fått ny logo og har endret navn fra Nordisk institutt for odontologisk materialprøvning til Nordisk Institutt for Odontologiske Materialer. Artikkelen beskriver den modernisering som instituttet har gjennomgått.

Evaluation of two matrix materials intended for fiber-reinforced polymers -

Abstract: Two matrix resins for fiber composites that remain in a fluid state during storage and handling before polymerization were evaluated. The resin mixtures, based on methyl methacrylate (MMA), were produced with two different cross-linking agent systems: 1,4-butanediol dimethacrylate and ethylene glycol dimethacrylate or diethylene glycol dimethacrylate. Water sorption, water solubility, water uptake and residual […]

Formation of photoproducts and cytotoxicity of bilirubin irradiated with turquoise and blue phototherapy light. -

To compare a new turquoise (“green”) fluorescent phototherapy lamp (490 nm) with a conventional blue phototherapy lamp (450 nm) with respect to cytotoxicity and photochemical effects of bilirubin.
Conclusion: The two lamps were similar in the formation of therapeutically relevant photoproducts, but the blue lamp showed potential in forming more photo-oxidation products and in causing more severe cellular damage in the presence of bilirubin.