Effect of Thermocycling on Flexural Properties of Microcrystalline Cellulose‐Reinforced Denture Base Acrylic Resins

Abstract

Purpose

To assess the impact of thermocycling 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 thermocycling (5000 cycles of 5 to 55°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

All3 test groups with the addition of MCC demonstrated improved flexural strength and flexural modulus compared to the conventional resin, without and after thermocycling. The highest mean flexural strength was corresponding 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.

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