硬質レジンならびにガラス繊維強化材のテレスコープ義歯外冠への応用

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  • Evaluation of the Highly Crosslinked Plastic and Fiber-reinforcing Material to Telescopic-denture.

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Purpose: The purpose of this study was to compare the flexural strength, compression strength, Vickers hardness, and water sorption test among light-heat curing highly crosslinked plastic, Targis, light curing highly crosslinked plastic, Spectrasit, Cesead, New META COLOR INFIS, heat curing highly crosslinked plastic, Chromasit, and fiber-reinforcing material (Vectris). The effect of reinforcing materials of Targis was investigated.<BR>Methods: Rectangular test specimens were modified by incorporating an additional fiber reinforcement of treated glass fibers (Vectris) in the test specimens. Control specimens were the same size as the test specimens, without any reinforced fibers. Flexural strength testing and compression testing of the specimens were done using a Computer Control System Autograph (AUTO GRAPH AG-5000 D). Vickers hardness testing of the specimens was done using a Micro Hardness Tester (HMV-2000), after the specimens had been stored in water at 37°C for 2 weeks. The additional reinforcing materials of the test specimen did not affect the flexural strength.<BR>Results and Conclusions: The results of this study suggest that fiber-reinforcing material reinforcement enhanced the flexural strength of highly crosslinked plastic, while the use of additional fiber reinforcement, made of glass fibers, in the test specimens, did not have an effect on the flexural strength.

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