Absorption of heat cured acrylic resin reinforced with rice husk nanoceluloce (Oryza Sativa L.)

Vena O. Hartini (Department of Prosthodontic, Faculty of Medicine, Jenderal Soedirman University, Purwokerto, Indonesia)
Haris B. Widodo (Department of Oral Biology, Faculty of Medicine, Jenderal Soedirman University, Purwokerto, Indonesia)
Ryana B. Purnama (Department of Dental Material, Faculty of Medicine, Jenderal Soedirman University, Purwokerto, Indonesia)
Setiadi W. Logamarta (Department of Orthodontic, Faculty of Medicine, Jenderal Soedirman University, Purwokerto, Indonesia)
Dian NA. Imam (Department of Orthodontic, Faculty of Medicine, Jenderal Soedirman University, Purwokerto, Indonesia)

Journal of Dentomaxillofacial Science
Vol. 6 No. 3 (2021): (Available online: 1 December 2021)

Objective: This study aims to determine chitosan as a coupling agent and the Polymethyl methacrylate (PMMA) denture base's water absorption with nano cellulose rice husk as reinforcement material. Material and Methods: This type of research is an experimental laboratory. The research sample consisted of four groups, each group consisting of 8 samples selected by simple random. The TI, T2, T3, and Control groups were PMMA with 1%, 2%, three chitosan, and without chitosan. This study uses two kinds of tests, water absorption test and Scanning Electron Microscope (SEM).Results: The heat cured acrylic resin group with 3% chitosan had the lowest water absorption 15.54 ±3.48 µm/mm3. The heat cured acrylic resin group without chitosan had the lowest water absorption 32.85 ± 4.82 µm/mm3. There was a significant difference in the water absorption test (p<0.05). The SEM showed the homogenous image but still had porosity and agglomeration.Conclusion: This study concludes that addition of chitosan in base denture acrylic has decreased water absorption.