Comparative Study of the Mechanical Properties of Fiber-Reinforced Denture Base Resin

KÖROĞLU A., Ozdemir T., Usanmaz A.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.113, no.2, pp.716-720, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 113 Issue: 2
  • Publication Date: 2009
  • Doi Number: 10.1002/app.30123
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.716-720
  • Keywords: dental polymers, fibers, mechanical properties, POLYETHYLENE FIBER, FLEXURAL STRENGTH, GLASS, FRACTURE, POLYMER, COMPOSITE, MODULUS
  • Middle East Technical University Affiliated: Yes

Abstract

Poly(methyl methacrylate) (PMMA) is used for removable prostheses. However, PMMA denture base resin does not meet all the mechanical requirements of prostheses. The aim of this in vitro study was to compare the transverse strength, modulus of elasticity, and impact strength values of nonreinforced heat-polymerized and microwave-polymerized denture base resin with those of denture base resin reinforced with continuous unidirectional E-glass, woven E-glass, and ultrahigh-molecular-weight polyethylene fibers. The mechanical properties of polymer reinforced with polyethylene fibers showed no significant increase in flexural properties. However, reinforcement with Stick fiber improved the mechanical properties. The test specimens that expressed low fracture strength values showed void spaces inside the test specimens. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 716-720, 2009