The effect of placement of glass fibers and aramid fibers on the fracture resistance of provisional restorative materials


Saygili G., Sahmali S., Demirel F.

OPERATIVE DENTISTRY, cilt.28, ss.80-85, 2003 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 28 Konu: 1
  • Basım Tarihi: 2003
  • Dergi Adı: OPERATIVE DENTISTRY
  • Sayfa Sayıları: ss.80-85

Özet

The fracture resistance of provisional restorations is an important concern for the restorative dentist. The fracture resistance of a material is directly related to its transverse strength. Six specimens of similar dimensions were prepared from three resins (PMMA, PEMA and BIS acryl-composite). The resins were reinforced with glass and aramid fibers. The samples were tested immediately after the material set, following seven days of wet storage using three-point compression loading. The results were analyzed with an analysis of variance (ANOVA). Fracture resistance of the specimens was statistically different (p<0.001) among the materials. Specimens reinforced with glass fibers showed higher transverse strength (149.82 MPa). The fiber reinforcement of resin materials increased the strength values (20-50%). Within the limitations of this study, the transverse strengths of PMMA, PEMA and BIS acryl-resin composites were improved after reinforcement with glass and aramid fibers.