PERBEDAAN KEKUATAN GESER (SHEAR STRENGTH)ANTARA SEMEN RESIN NANOSISAL KOOMPOSIT 60% WT DAN SEMEN RESIN NANOFILLER KOMPOSIT

Composite resin is a restoration material that is often used in dentistry because of its high aesthetic value. One important composition in composite resins is inorganic fillers. Inorganic fillers commonly used such as glass silica have the disadvantages of being non-degradable, energy processes that are highly dependent on fossil fuels, very high pollutant emulsions that are not good for health and the environment. Therefore, filler as an alternative filler is needed. Natural fibers as a substitute for fillers in composite resins began to be developed. One of the natural fibers that can be used is sisal fiber (Agave sisalana).
Objective: to determine the difference of shear strength between 60% nanosisal composite resin cement and nanofiller composite resin cement.
Methods: This type of research is laboratory experimental research. Sisal fiber is converted into nano size, so-called nanosisal filler. Nanosisal mixed with Bis-GMA, UDMA, TEGDMA, Champhorquinone. Composite nanofiller resin (AilCem Core) cement as a control. The sample amounted to 10 divided into two groups. Group A composite nanosisal resin cement with 60% filler volume and group B nanofiller composite resin cement. Premolar teeth were prepared for class V and then filled with two ingredients. Nanosisal composite resin cement 60% filler labeled as group A, nanofiller composite resin cement labeled as group B. Extracted premolar teeth were prepared to class V (G. V. Black classifications) then filled using those two materials, each material for 5 teeth.
The samples were tested for shear strength using a Universal Testing Machine (UTM). Data wa analyzed by Independent Sample T-Test.
Result: 60% composite nanosisal resin cement has an average shear strength of 13.10 MPa, and composite nanofiller resin cement of 4.92 MPa. Data analysis showed that there were significant differences (p = 0,000; p <0,05).
Conclusion: The shear strength of composite nanosisal resin cement is 60% greater than that of composite nanofiller resin cement.