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Journal of Biomaterials Applications
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The Creep Behavior of Acrylic Denture Base Resins

Emmanuel Rotimi Sadiku

University of Strathclyde, Department of Pure and Applied Chemistry, [Fiber and Textile Research Unit], Glasgow G1 1XW, Scotland, UK

Frank Olusesan Biqtidara

The University of Sheffield, Faculty of Materials, Department of Ceramics, Glasses and Polymers, Sheffield, England, UK

The creep behavior of acrylic dental base resins, at room temperature and at different loading conditions, has been examined. The behaviors of these resins are similar to that of "commercial perspex" at room temperature over a period of 1000 seconds. The pseudo-elastic moduli of the blends of PMMA/PVC show a significant increase compared with PMMA alone. The addition of the PVC powder to the heat-cured acrylic resin increased the time-dependent elastic modulus. This increase in elastic modulus is advantageous in the production of denture based resins of improved mechanical properties.

Key Words: poly(methylmethacrylate) • poly(vinylchloride) • cold-cured • heat-cured • self-cured • creep compliance • modulus • stress relaxation

Journal of Biomaterials Applications, Vol. 10, No. 3, 250-261 (1996)
DOI: 10.1177/088532829601000305
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