PEMBERIAN EDIBLE COATING NANOKITOSAN SINTETIK CANGKANG UDANG DAPAT MENINGKATKAN KEKUATAN TRANSVERSAL PADA BASIS GIGI TIRUAN RESIN AKRILIK POLIMERISASI PANAS
Kata Kunci:
Heat cured acrylic resin, sintetic nanochitosan shrimp sell, transverse strengthAbstrak
Introduction: One of the main component of denture is the denture base. Heat cured acrylic resin is the most common used denture base material. One disadvantage of heat cured acrylic resin is it’s ability to adsorb water and reducing transverse strenght of the heat cured acrylic denture base. The decrease in transverse strength will cause the fracture of the denture base. Chitosan shrimp shell coating is proven to improve the quality and extending the shelf life of a food and fruit because it can inhibit water absorption. Purpose: The purpose of this study was to determine whether the sintetic nanochitosan shrimp shell coating on heat cured acrylic resin plate could increase the transverse strength. Methods: This experimental design of this study was 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 sintetic nanochitosan shrimp shell coating 2%, 3% and 4%. Control group K1 with the chitosan 2%, K2 heat cured acrylic resin plate Results: The results showed that the mean values of the transverse strength of the P1, P2, P3, K1 and K2 groups respectively were 111,27±13,51, 122,12±17,60, 132,82±14,74, 99,89±6,69, and 82,91±3,93. Analysis of the data using the One Way ANOVA test, the value of the transverse strength showed p<0,05 which means that it is significantly different. Post hoc LSD test for transverse strength values, all of them had a difference p<0.05 except for P1 with P2, P2 with P3 and P1 with K1, there were no significant differences p>0.05. Conclusion: From the results of this study it can be concluded that sintetic nanochitosan shrimp shell coating can increase the transverse strength of heat cured acrylic resin, which the 4% concentration is the most concentration that can increase the transverse strength of the heat cured acrylic resin denture base.
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