Oregon Health & Science University

Carmem S Pfeifer

Jack L Ferracane

Rafael Tiago Patzlaff

A compact material testing system is configured to expose multiple samples housed within separate sample chambers to simulated fluid, thermal, and mechanical loading conditions. The system includes multiple independent load actuators positioned to extend actuator rods into corresponding sample chambers to apply mechanical loading to the test sample within. A fluid control system is included to bathe each test sample in a fluid medium and replenish the fluid medium within its sample chamber as needed. Each sample chamber includes a gas inlet and gas outlet to provide non-turbulent circulation and control of atmospheric composition above the fluid medium inside the chamber. A logic programmable controller is provided for input of test parameters and automated simultaneous control of mechanical loading, fluid flow, and temperature in the sample chambers.

Compact material testing system

Disclosed herein are methacrylate compounds that can be used as components of dental composites. Also disclosed are dental composites comprising the compositions and thiourethane oligomers.

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Portland, OR, United States of America

Carmem S Pfeifer