TITLE

The effect of fiber reinforcement on the fracture toughness and flexural strength of provisional restorative resins

AUTHOR(S)
Hanza, T. A.; Rosenstiel, Stephen F.; Elhosary, M. M.; Ibraheem, R. M.
PUB. DATE
September 2005
SOURCE
International Journal of Prosthodontics;Sep/Oct2005, Vol. 18 Issue 5, p433
SOURCE TYPE
Academic Journal
DOC. TYPE
Abstract
ABSTRACT
The purpose of this study was to compare the effects of 6 different types of fibers on the fracture toughness and flexural strength of polymethyl methacrylate (PMMA), polyethyl methacrylate (PEMA), and bis-acrylic resins. A total of 105 specimens were prepared for the fracture toughness test and flexural strength test. The specimens were divided into 3 groups according to the type of resin used: Jet, Trim, or Temphase (n = 35), and then into 7 subgroups (n = 5) according to the type of fiber reinforcement: Construct, Fibrestick, Ribbond normal, Ribbond THM, Ribbond triaxial, or Fibrenet. Unreinforced specimens were used as the control. Specimens were loaded into a universal testing machine until fracture. The mean fracture toughness (MPa1/2) and mean flexural strength (MPa) were compared by 1-way analysis of variance, followed by the Tukey standardized range test (α = .05). The following results were found: (1) The use of fibers is an effective method to increase the fracture toughness and flexural strength of provisional restoration resin; (2) The surface treatment of the fibers greatly influences their effect on the fracture toughness and flexural strength of provisional restoration resin.
ACCESSION #
36865473

 

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