PENAMBAHAN NANOKITOSAN CANGKANG UDANG WINDU PADA PLAT RESIN AKRILIK POLIMERISASI PANAS DAPAT MENINGKATKAN KEKUATAN IMPAK
Kata Kunci:
Heat cured acrylic resin, tiger shrimp shell nanochitosan, impact strengthAbstrak
Background: Heat cured resin acrylic is the most commonly used denture base material, prone to a decrease in mechanical strength, one of which is impact strength. Impact strength is the ability of a material to accept impact loads until the material breaks. Adding a reinforcing material can increase the impact strength of the denture base material. Nanochitosan of tiger shrimp shells as a material has good biocompatibility, biodegradable, mucoadhesive, and non-toxic properties has a small particle size and contains calcium carbonate and chitin, so it can blend with acrylic resin homogeneously through the help of coupling agents acrylic acid and acetic acid as well as creates a strong, multiple mechanical bond. Purpose: This study was to determine whether the addition of nanochitosan from tiger shrimp (Penaeus monodon) shells on heat cured acrylic resin plates can increase impact strength. Methods: This study was an experimental study with Post Test Only Control Group Design with a total of n = 30 and consisted of 5 groups. Treatment groups P1, P2 and P3 with the addition of 0.5%, 1% and 1.5% tiger shrimp shell nanochitosan. Control group K1 with the addition of 5% zirconium oxide, K2 heat cured acrylic resin plate. Impact strength was measured using a Charpy Pendulum Impact Testing. Results: Showed that the mean impact strength values of the P1, P2, P3, K1 and K2 groups respectively were 3.6382±0.33395, 4.6337±0.31763, 4.0342±0.30710, 3.2312±0.31749 and 3.0672±0.35860, indicating that the data is normally distributed and homogeneous. Data analysis tested by One Way ANOVA impact strength values were significantly different (p<0,05). LSD post hoc test concentration of 1% and K1 (addition of zirconium oxide) showed a significance of p<0.05. Conclusion: from this study it can be concluded that the addition of 1% tiger shrimp shell nanochitosan on heat cured acrylic resin plates can increase the impact strength.
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