In vitro element release and biological aspects of base-metal alloys for metal-ceramic applications -

Abstract Objective The aims of this study were to investigate the release of element from, and the biological response in vitro to, cobalt–chromium alloys and other base–metal alloys used for the fabrication of metal-ceramic restorations. Material and methods: Eighteen different alloys were investigated. Nine cobalt–chromium alloys, three nickel–chromium alloys, two cobalt–chromium–iron alloys, one palladium–silver alloy, […]

Cements for gold inlays -

Gold inlays have for a long time been known as high quality restorations. Since dental amalgam is no longer applicable as filling material in Norway, the need for gold inlays has expanded, especially in patients having high chewing force and tooth abrasions who need replacement of their old amalgam fillings.

Society of Toxicology 2015 -

The US Society of Toxicology will have its yearly convention in San Diego, California, 22–26 March 2015. Professor Jon E. Dahl, Director at NIOM, has been invited as a speaker on the continuous education course on Advances in Safety Assessment of Medical Devices on 22 March 2015. His talk is entitled “The Use of Plastic […]

Improved composite repair -

Repairing and extending composite restorations are common and well-accepted procedures for the dental practitioner. Evaluation of the repair strength has great research focus by using tensile and shear bond strength measurements. The present collaborative study from NIOM has assessed the effect of surface treatments and bonding systems on the repair bond strength between composite materials after 1 and 12 months of storage, using a tensile test method.

New research group at NIOM -

A new research group is established at NIOM, focusing on clinical research. The group consists of four scientists, Simen E. Kopperud, Håkon Valen, Rune Becher and Jon E. Dahl, with a broad and diverse scientific background. They have extensive knowledge from toxicology, dental materials, epidemiology, environmental science and microbiology. This experience and knowledge is giving an initiative and opportunity for inter-disciplinary research.