Flexural strength of dental materials evaluated by short-beam-uniaxiall and piston-on-three ball biaxial static tests

The aim of this study was to evaluate the mechanical properties of dental resins by means of 3- and 4-point short-beam-uniaxial bending and piston-on-three ball biaxial static tests. The test specimens with a specified shape and dimensions for each type of flexural static tests were prepared for Bis-GMA/TEGDMA (70/30) resin. The specimens were stored in distilled water at 37 °C for 24h prior to the mechanical tests and then they were subjected to different types of static mode of flexural test. The effect of test speed and type of the test were investigated for specimens under static flexural tests. Finite element analyzes was performed to have a more precise comparison between the 3 types of static tests that is used in this study.