Depth of cure, flexural properties and volumetric shrinkage of low and high viscosity bulk-fill giomers and resin composites
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- TSUJIMOTO Akimasa
- Department of Operative Dentistry, Nihon University School of Dentistry Department of General Dentistry, Creighton University School of Dentistry
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- BARKMEIER Wayne W.
- Department of General Dentistry, Creighton University School of Dentistry
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- TAKAMIZAWA Toshiki
- Department of Operative Dentistry, Nihon University School of Dentistry
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- LATTA Mark A.
- Department of General Dentistry, Creighton University School of Dentistry
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- MIYAZAKI Masashi
- Department of Operative Dentistry, Nihon University School of Dentistry
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説明
<p>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.</p>
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 36 (2), 205-213, 2017
一般社団法人 日本歯科理工学会