TMA offers valuable insight of materials properties -

Thermomechanical analysis, TMA, can provide valuable information on materials which influence on production conditions for dental restorations that is difficult to obtain by other analytical techniques.

NIOM Senior Engineer Ketil Kvam to Academy of Dental Materials -

The annual meeting of The Academy of Dental Materials takes place in Nuremberg, Germany from October 5-7.

A novel etching technique for surface treatment of zirconia ceramics to improve adhesion of resin-based luting cements -

Bonding of zirconia crowns and bridges to abutments is important, not only bonding of the thin resin layer to the abutment, but also bonding to the zirconia ceramic is crucial. Both mechanical and chemical adhesion are desired. Mechanical retention of dental porcelain achieved by etching with moderately concentrated hydrofluoric acid is not possible with zirconia ceramics. The purpose of this study was to show that etching is possible with relative low melting fluoride compounds such as ammonium hydrogen difluoride and potassium hydrogen difluoride.

Dental ceramics – Classification and properties -

Different dental ceramics available today including a classification, mechanical properties and a description of processing techniques with emphasis on the zirconia materials.

Strength of all-ceramic crowns is influenced by the margin design -

A recent study performed at NIOM showed that a modified design of the crown margin gave stronger crowns without jeopardizing the aesthetics.