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- Title
Evaluation of some properties of two fiber-reinforced composite materials.
- Authors
Lassila, Lippo VJ; Tezvergil, Arzu; Lahdenperä, Milla; Alander, Pasi; Shinya, Akiyoshi; Shinya, Akikazu; Vallittu, Pekka K
- Abstract
Objective. Water sorption, flexural properties, bonding properties, and elemental composition of photopolymerizable resin-impregnated fiber-reinforced composite (FRC) materials (everStick C&B and BR-100) (FPD) were evaluated in this study. Material and methods. Bar-shaped specimens (2×2×25  mm) were prepared for water sorption and flexural strength testing. The specimens ( n =6) were polymerized either with a hand light-curing unit for 40  s or, additionally, in a light-curing oven for 20  min and stored in water for 30 days. Water sorption was measured during this time, followed by measurements of flexural strength and modulus. A shear bond strength test was performed to determine the bonding characteristics of polymerized FRC to composite resin luting cement (Panavia-F), ( n =15). The cement was bonded to the FRC substrate and the specimens were thermocycled 5000 times (5–55°C) in water. SEM/EDS were analyzed to evaluate the elemental composition of the glass fibers and the fiber distribution in cross section. Results. ANOVA showed significant differences in water sorption according to brand ( p 2 , CaO, and Al 2 O 3 ) in ratios. The distribution of fibers in the cross section of specimens was more evenly distributed in everStick C&B than in BR-100. Conclusion. The results of this study suggest that there are some differences in the tested properties of the FRC materials.
- Subjects
FIBROUS composites; COMPOSITE materials; DENTAL materials; POLYMERIZATION; DENTISTRY
- Publication
Acta Odontologica Scandinavica, 2005, Vol 63, Issue 4, p196
- ISSN
0001-6357
- Publication type
Article
- DOI
10.1080/00016350510019946