Polymerization
of photocurable commercial dental methacrylate-based composites |
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Authors: | A Gatti A N S Rastelli S J L Ribeiro Y Messaddeq V S Bagnato |
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Institution: | 1.Institute of Chemistry,UNESP,Araraquara,Brazil;2.Institute of Physics,USP,S?o Carlos,Brazil |
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Abstract: | Due to their excellent aesthetics, photopolymers
have been extensively used in several dentistry applications. However, several
problems are reported, e.g. low mechanical and abrasion resistance, shrinkage
during polymerization, etc. Properties of the final restorations are intrinsically
related to the polymerization stage, which can be conveniently studied by
photocalorimetry. In the present work the polymerization reaction and the
filler content of different photocurable commercial dental methacrylate-based
composites were studied by means of photocalorimetry and thermogravimetry,
respectively. The results show that the values of curing rate, the heat of
polymerization and the filler content vary significantly from one composite
to another. |
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Keywords: | composite resin dental polymers photocalorimetry polymerization kinetics |
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