Fatigue of packable dental composites
| Autor: | Papadogiannis, Y. Lakes, R.S. Palaghias, G. Helvatjoglu-Antoniades, M. Papadogiannis, D. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Popis: | Objective: The purpose of the study was to measure the fatigue properties of four dental resin composites using a dynamic mechanical analysis and to relate the results with viscoelastic properties. Methods: Dynamic torsional loading was conducted at resonance at 30-50 Hz. Specimens were thoroughly cured and tested dry at 21 °C. Results: All of the specimens showed a loss of strength following repeated stress, due to material fatigue. The material with the highest shear modulus had the lowest damping and the highest fatigue strength. Significance: Dental composites exhibit a modest loss of strength due to fatigue. Since mastication involves many cycles of stress during the life of a restoration, fatigue properties should be taken into account in restoration design. © 2006 Academy of Dental Materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|