Clinically relevant fracture testing of all-ceramic crowns -

Fracture strength measured in vitro indicates that most all-ceramic crowns should be able to withstand mastication forces. Nevertheless, fractures are one of the major clinical problems with all-ceramic restorations. Furthermore, the fracture mode of all-ceramic crowns observed in clinical use differs from that found in conventional fracture strength tests. The aim of the present study was to develop and investigate a method that simulates clinical fracture behavior in vitro

Feeding tubes for neonates – leaching of plasticizers in food simulating solutions and resulting changes in mechanical properties. -

INTRODUCTION: Leaching of plasticizers, especially the phthalate DEHP (diethylhexyl phthalate), from PVC materials is well-known, and health-concerns are raised with regards to human exposure to DEHP leached from the materials [1]. Still, PVC tubes are used as feeding tubes, also for neonates and prematures. At Haukeland University Hospital (Bergen, Norway), the use of PVC feeding […]

Acidity and titrable acidity of different soft drinks and beverages in Norway -

The potential erosive effect on teeth from different drinks is sometimes presented by the simple initial pH. Such measurements do not however, reveal the buffer capacity of the soft drinks and beverages, i.e their capacity to maintain a low pH in presence of neutralizing factors. The goals of this experiment were to measure initial pH and calculate the titrable acidity (TA) of 21 different drinks.

Kvikksølv og tannhelsepersonell -

Personer i tannhelsen har blitt kvikksølveksponert og fått en påvirkning av nervesystemet under arbeid med amalgam. Dette kan ha ført til klinisk sykdom hos enkelte som har hatt høy eksponering for kvikksølv og/eller er særlig følsomme for kvikksølv, skriver artikkelforfatterne.

Annonsering og tannbehandling -

Annonseringen vil bli mer kompleks og subtil i tiden fremover og vil kreve mer bevisst og kritisk holdning hos tannhelsepersonell.