Journal article
Handling properties and surface characteristics of universal resin composites
Dental materials, Vol.37(9), pp.1390-1401
09/2021
DOI: 10.1016/j.dental.2021.06.011
Abstract
This study investigated the handling and surface characteristics of universal resin composites and determined the interrelations among the composites’ handling, mechanical, and physical properties.
Five recently introduced universal resin composites were tested. Twelve specimens per material were used to measure the stiffness and stickiness (handling properties) of the resin composite pastes. Additionally, surface properties (Knoop hardness number [KHN], surface roughness [Sa], surface gloss [SG], water contact angle [CA], and surface free energy [SFE]) of cured resin composites were determined in 12 specimens per material immediately after preparation (baseline) and after subjection to thermal cycles (TCs).
Handling and surface properties of the resin composites were material dependent. All the resin composites showed significantly lower KHN in the post-TC subgroups than that in the baseline subgroups. However, the influence of TC on the other surface properties was dependent on the material used. Some resin composites did not indicate any significant differences in Sa, SG, or CA between the baseline and post-TC groups.
Although the resin composites in the baseline groups presented with different handling and surface properties, the surface properties of most of the composites were significantly affected by TC. Extremely strong positive or negative correlations were observed between stiffness and stickiness, KHN and Sa, KHN and SG, Sa and SG, and CA and SFE. Most correlations between the handling and surface properties were weak. Therefore, the selection of resin composites in clinical situations should be based on comprehensive consideration of their properties.
Details
- Title: Subtitle
- Handling properties and surface characteristics of universal resin composites
- Creators
- Toshiki Takamizawa - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanRyo Ishii - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanTomohiko Tamura - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanMunenori Yokoyama - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanEizo Hirokane - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanAkimasa Tsujimoto - Department of Operative Dentistry, University of Iowa College of Dentistry, Iowa City, IA, USAMasashi Miyazaki - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, JapanNobuya Kitahara - Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
- Resource Type
- Journal article
- Publication Details
- Dental materials, Vol.37(9), pp.1390-1401
- Publisher
- Elsevier Inc
- DOI
- 10.1016/j.dental.2021.06.011
- ISSN
- 0109-5641
- eISSN
- 1879-0097
- Language
- English
- Date published
- 09/2021
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984176686702771
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