Diwya Nugrahini Hapsari, Sinta Candra Wardani
Introduction: Hydroxyapatite made from skipjack tuna bone can be used as a reinforcing material added to the denture plate base to prevent fracture. The development of knowledge about nanoparticles shows that particles or globules at the nanometer scale have distinctive physical properties, which can improve the quality of various types of media. The purpose of this study was to determine the effect of adding nanohydroxyapatite from skipjack tuna bone on the transverse strength and impact strength of heat cured acrylic resins. Methods: There were 3 groups of heat cured acrylic resin samples; the group without the addition of nano hydroxyapatite as a control, the group with the addition of 2% nano hydroxyapatite, and the group with the addition of 5% nano hydroxyapatite. Each group consisted of 9 samples which were then tested for transverse strength with Transverse Testing Instrument and impact strength with Impact Testing Instrument. Results: The best transverse strength was in the group with the addition of 2% nano hydroxyapatite of skipjack tuna. Meanwhile, the impact strength after the addition of 2% nano hydroxyapatite did not have a significant difference compared to the control, but the addition of 5% decreased the impact strength. Conclusion: Nano hydroxyapatite of skipjack tuna bone has the potential as a reinforcing material from heat cured acrylic when used at a concentration of 2% because at that concentration the transverse strength shows the best performance. © 2023 UPM Press. All rights reserved.
Department of Prosthodontics, Faculty of Dentistry, Brawijaya University, Malang, 65145, Indonesia
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