PENGARUH FRAKSI VOLUME FIBER SISAL (Agave sisalana) TERHADAP KEKUATAN FLEKSURAL RESIN KOMPOSIT
DOI:
https://doi.org/10.30659/odj.5.2.139-144Keywords:
Composite Resin, Sisal Fiber, Fiber Reinforced Composite, Volume fraction, Flexural strength.Abstract
Background: Composite resin is filling material that used in dentistry field
because of good aesthetic. Use of fiber as reinforced composite resin (FRC)
begins to be developed because it has a lot of functions, such as increase
strength, stiffness, material hardness from fracture, and decrease shrinkage.
Fiber composite resin has syntetic characteristic and needs chemical process
also has an expensive price. Therefore, natural fiber is easier to find, cheaper and can be developed as an alternative substitute of syntetic fiber. One of the natural alternative is sisal fiber. This study aims to know the effect of volume fraction of sisal fiber to composite resin flexural strength with sisal fiber concentration 1%, 2%, 3%, 4%.
Method: This study was true experimental with post test only control group
design which divided into 4 groups RK+FS 1% (K1), RK+FS 2% (K2), RK+FS
3% (K3), RK+FS 4% (K4). The data was analized using one way ANOVA assay
and Post Hoc with significant degree 5%.
Results: Mean of flexural strength sum K1=50,87 MPa, K2=42,96 MPa,
K3=33,94 MPa, K4=24,32 MPa. Result of one way ANOVA assay showed value
p=0,000. Result of further assay Post Hoc showed K1 with K2 p=0,002, K1 with
K3 p=0,000, K1 with K4 p=0,000, K2 with K3 p=0,001, K2 with K4 p=0,000, K3
with K4 p=0,000.
Conclusions: Concluded that there is good effect of sisal fiber volume fraction
to composite resin flexural strength. Flexural strength RK+FS 1% has higher
strength than RK+FS 2%,3%,4%. Sisal fiber could become a natural fiber
alternative in dentistry restoration material.
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