Abstract
The curing pattern of five commercial light-cured composites was investigated. Micro-ATR infrared spectroscopy was used to evaluate the degree of cure as a function of distance from the exposed surface and curing time. KHN measurements were also obtained for each depth to relate the hardness pattern to the degree of conversion. The post-curing efficiency of each system was studied by DSC. The results indicate that microfilled materials present smaller depth of cure and higher amount of unconverted bonds as a function of distance and exposure time. Depth of cure, hardness pattern and curing pattern are extended with increased inorganic loading. The thermal capacity of the filler fraction influences degree of cure. A great loss in the heat induced polymerization is observed 24-h post curing, attributed to the dead end polymerization effect.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
