학술논문
Thermal characterization of dental composites by TG/DTG and DSC.
Document Type
Article
Author
Source
Subject
*DENTAL materials
*COMPOSITE materials
*HEAT treatment
*GLASS transition temperature
*POLYMERIZATION
*CALORIMETRY
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Language
ISSN
1388-6150
Abstract
Dental composites can be improved by heat treatment, as a possible way to increase mechanical properties due to additional cure (post-cure). Direct dental composites are essentially similar to the indirect ones, supposing they have the same indication. Therefore, to establish a heat treatment protocol for direct composites, using as indirect (photoactivated by continuous and pulse-delay techniques), a characterization (TG/DTG and DSC) is necessary to determine parameters, such as mass loss by thermal decomposition, heat of reaction and glass transition temperature ( T). By the results of this study, a heat treatment could be carried out above 160 °C (above T, and even higher than the endset exothermic event) and under 180 °C (temperature of significant initial mass loss). [ABSTRACT FROM AUTHOR]