An evaluation of the radiopacity of composite restorative materials used in Class I and Class II cavities -

The study showed that twelve composites showed radiopacity greater than enamel, for five the radiopacity was lower than that of dentin, and for two materials the radiopacity was between that of enamel and dentin.

Creep studies of multiphase acrylic systems -

The influence of type and quantity of five different crosslinking agents on tensile creep properties of multiphase acrylic systems has been studied.
The investigation showed higher creep values for autopolymerized than for heat-polymerized materials.