Effect of Thermal Cycling on Flexural Properties of Microcrystalline Cellulose-Reinforced Denture Base Acrylic Resins
Document Type
Article
Publication Date
8-1-2020
Abstract
Purpose To assess the impact of thermal cycling on flexural properties of denture base acrylic resin reinforced with microcrystalline cellulose (MCC) derived from oil palm empty fruit bunch (OPEFB). Materials and Methods The flexural strength and flexural modulus, following thermal cycling (5000 cycles of 5-55 degrees C) of 3 MCC-reinforced poly methyl methacrylate (PMMA) specimens were compared with the conventional and commercially available high-impact PMMA. The 3 test groups were represented by addition of various weight combinations of MCC and acrylic powders. Results All 3 test groups with the addition of MCC demonstrated improved flexural strength and flexural modulus compared to the conventional resin, without and after thermal cycling. The highest mean flexural strength corresponded to the specimens reinforced with 5% MCC followed by 2% MCC. Conclusion Addition of MCC derived from OPEFB to PMMA may be a viable alternative to the existing, commercially available synthetic reinforced PMMA resins. The potential application of natural fillers in the fabrication of a reinforced denture base resin needs further study.
Keywords
Flexural modulus, flexural strength, microcrystalline cellulose, oil palm empty fruit bunch, polymethyl methacrylate, thermal cycling
Divisions
Dentistry
Funders
None
Publication Title
Journal Of Prosthodontics-Implant Esthetic And Reconstructive Dentistry
Volume
29
Issue
7
Publisher
Wiley
Publisher Location
111 RIVER ST, HOBOKEN 07030-5774, NJ USA