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자료유형
학술저널
저자정보
유상희 (원광대학교) 오승한 (원광대학교) 배지명 (원광대학교)
저널정보
대한치과재료학회 대한치과재료학회지 치과기재학회지 제36권 제3호
발행연도
2009.9
수록면
235 - 242 (8page)

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Fiber reinforcement has been used to increase the mechanical properties of denture base resins. However, the reinforcing effect of the various fibers according to the fiber volume was not known. The aim of this study was to evaluate the reinforcing effect of three different fibers according to the fiber content on denture base resin. The heat-polymerized resin (Vertex RS, Dentimax, Netherlands) was used as the matrix. Glass fiber (GL: ER 270FW, Hankuk Fiber Glass, Korea), polyaromatic polyamide fiber (PA: Kevlar-49, Dupont, U.S.A.) and ultra high molecular weight polyethylene fiber (PE: P.E, Dong Yang Rope, Korea) were used to reinforce the denture base resin. The 2.6%, 5.3% and 7.9% volume pre-impregnated fiber were located at the bottom of specimen. The test groups were classified as follows: (1) intact heat-polymerized resin (Control), (2) resin reinforced with glass fibers (GL), (3) resin reinforced with polyaromatic polyamide fibers (PA) and (4) resin reinforced with polyethylene fibers (PE). The test specimens (n=10) of each group were stored in distilled water at 37℃ for 50 hours before test. The flexural strength and modulus were measured by an universal testing machine (Z020, Zwick, Germany) at a crosshead speed of 5 mm/min in a three-point bending mode. The data was analyzed by one-way ANOVA and the Duncan?s multiple range test (α=0.05). GL, PA and PE showed significant reinforcing effects on denture base resin. For flexural strength, PA was the highest in 2.6% volume, while GL was the highest in 5.3% and 7.9% volume. For flexural modulus, GL and PA were higher than PE in 2.6% volume, and GL was the highest in 5.3% and 7.9% volume. In this study, all the fibers showed a reinforcing effect on denture base resin. Specially, glass fiber at 5.3% volume ratio showed most effective reinforcing effect on denture base resin in terms of flexural strength and flexural modulus.

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UCI(KEPA) : I410-ECN-0101-2015-510-001114443