Mechanical properties and wear behavior of light-cured packable composite resins

摘要

Objectives: Determination of flexural strnegth, flexural modulus, fracture toughness and wear resistance of three packable composites (Solitaire Surefil, ALERT) and a packable ormocrr (DefinitE) in comparison with an advanced hybrid compoiste (Tetric Ceram) and an ion- releasing composite (Ariston pHc). Methods: flexural strength, flexural modulus and fracture toughness of each material were determined in three-point bending (each test N=10). Single-edge noteched-bend specimens were used to evaluate the fracture toughness (K_IC). Wear of the materials (n=8) was Determined in a pin-on-block-design with a spherical Degusit antagonist at 50 N vertical load and quantified by a replica technique using A 3D-laser scanner.