Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Original Paper
Effect of fiberglass orientation on flexural properties of fiberglass-reinforced composite resin block for CAD/CAM
Tohru YASUENaohiko IWASAKIMaho SHIOZAWAYumi TSUCHIDATetsuya SUZUKIHidekazu TAKAHASHI
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2019 Volume 38 Issue 5 Pages 738-742

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Abstract

A fiberglass-reinforced composite resin (FRP) block using a plain woven fiberglass sheet for CAD/CAM has been introduced in dental practice. The aim of the present study was to evaluate the effects of the fiberglass sheet orientation on the flexural properties of an FRP block. The flexural properties of five types of fiberglass sheet-assigned specimens were examined using a three-point bending test. A one-way analysis of variance revealed that the orientation of fiberglass sheet significantly influenced the flexural strength, 0.2% yield strength, and flexural modulus. The values of the flexural properties of the FRP were the largest when the fiberglass sheets were perpendicular to the applied force, and the smallest when the fiberglass was parallel to the same. The flexural properties of the FRP block were anisotropic and they were significantly influenced by the orientation of fiberglass sheet.

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© 2019 The Japanese Society for Dental Materials and Devices
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