Mechanical Properties of Artificial Teeth

Abstract

The purpose of this study was to investigate the mechanical properties of resin and porcelain teeth. The static tests were performed with an Instron-type universal testing machine. The dynamic stiffness and tan δ were measured by using a viscoelastic spectrometer. The impact tests were carried out with a drop weigh impact testing apparatus.
Following results were obtained: 1) The fracture load, ultimate strength, absorbed energy and deformation in the static tests were larger for the resin teeth than for the porcelain teeth. However, the elastic modulus was larger for the porcelain teeth. 2) The stiffness measured dynamically was larger for the porcelain teeth than for the resin teeth. The tan δ was larger for the resin teeth. 3) The imapct tests showed that the absorbed energy and deformation were larger for the resin teeth, while the acceleration peak value was larger for the porcelain teeth.