Dynamic mechanical analysis of provisional resin materials reinforced by metal oxides

Date

2005-01-01

Author

Korkmaz, T
Doan, A
Usanmaz, Ali

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In this study, several provisional resin materials were investigated by dynamic mechanical analysis (DMA). The materials were autopolymerized PMMA and PEMA, light cured PMMA. Autopolymerized PMMA has the highest T-g (131 degrees C) compared to that of the autopolymerized PEMA (102 degrees C) and light cured PMMA (120 degrees C). The storage moduli for autopolymerized PMMA, autopolymerized PEMA and light cured PMMA are 2.9, 1.8 and 2.3 GPa, respectively. The loss moduli of the same resins are 330, 300 and 350 MPa, respectively. Each of these resins were reinforced with 1%, 3% and 5% of each of metal oxides of MgO, ZrO2 and Al2O3 and then studied with DMA. Small changes were observed for dynamic mechanical properties tested. However, the changes are not systematic and noticeable. This is most probably due to smaller size of metal oxides particles compared to that of polymer particle size.

Subject Keywords

Dynamic mechanical analysis (DMA), Autopolymerized PMMA and PEMA, Light cured PMMA, Provisional restorative materials

URI

https://hdl.handle.net/11511/55918

Collections

Graduate School of Natural and Applied Sciences, Article