Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
Original Paper
Depth of cure, flexural properties and volumetric shrinkage of low and high viscosity bulk-fill giomers and resin composites
Akimasa TSUJIMOTOWayne W. BARKMEIERToshiki TAKAMIZAWAMark A. LATTAMasashi MIYAZAKI
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2017 Volume 36 Issue 2 Pages 205-213

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Abstract

The purpose of this study was to investigate the depth of cure, flexural properties and volumetric shrinkage of low and high viscosity bulk-fill giomers and resin composites. Depth of cure and flexural properties were determined according to ISO 4049, and volumetric shrinkage was measured using a dilatometer. The depths of cure of giomers were significantly lower than those of resin composites, regardless of photo polymerization times. No difference in flexural strength and modulus was found among either high or low viscosity bulk fill materials. Volumetric shrinkage of low and high viscosity bulk-fill resin composites was significantly less than low and high viscosity giomers. Depth of cure of both low and high viscosity bulk-fill materials is time dependent. Flexural strength and modulus of high viscosity or low viscosity bulk-fill giomer or resin composite materials are not different for their respective category. Resin composites exhibited less polymerization shrinkage than giomers.

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© 2017 The Japanese Society for Dental Materials and Devices
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