What is it about?
In this study, the thermal behavior in terms of glass transition (T g), degradation, and thermal stability of four commercial new-generation posterior bulk fill composites (Surefill SDR, Dentsply; Quixfill, Dentsply; Xtrabase, Voco; and Xtrafill, Voco) activated by light-emitting diodes (LEDs) was analyzed by thermogravimetric analysis (TG), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA).
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Why is it important?
The results show that the Xtrabase composite displayed the highest T g (120 °C at a 5 °C min−1 heating rate) and E a (157.64 kJ mol−1) values associated with thermal degradation from the main chain of the polymer.
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This page is a summary of: Thermal properties and kinetics of new-generation posterior bulk fill composite cured light-emitting diodes, Journal of Thermal Analysis and Calorimetry, August 2014, Springer Science + Business Media,
DOI: 10.1007/s10973-014-3975-0.
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