Effect of woven glass fibre reinforcement on the flexural strength of composites.

SADJ

Department of Operative Dentistry, Faculty of Dentistry, University of Limpopo (Medunsa campus), South Africa.

Published: October 2007

AI Article Synopsis

  • The study measured the flexural strength of dental composites reinforced with woven glass fibre, using four groups of samples made from different composite combinations.
  • The analysis showed that adding glass fibre significantly increased the flexural strength of the composites, with a single layer enhancing strength by about 30%.
  • This method of reinforcement could lead to stronger and more cost-effective dental crowns and bridges, benefiting both clinicians and patients in aesthetic dentistry.

Article Abstract

To measure and compare the flexural strength of composites reinforced with fibres, four groups of specimens (N = 10) were prepared from the combinations: Filtek Flow/Filtek Z250 and Esthet-X flow/Esthet-X dental composite. One group from each combination was reinforced with woven glass fibre (everStick net) and all the specimens subjected to three-point bend flexural testing. The mean and standard deviations for each test group were calculated and compared using one-way analysis of variance (ANOVA) followed by pairwise Bonferroni T-tests at a preset alpha of p < 0.05. It was found that fibre reinforcement significantly (p < 0.001) increased the flexural strength of both types of composites. As the inclusion of only one layer of glass fibre net produced an increase of approximately 30% in the flexural strength of the composite samples, it can be speculated that multiple layers would increase it even more. The use of fibre-reinforcement to strengthen directly placed composite crowns and bridges will enable the clinician to provide a more cost effective service as well as aesthetic dentistry to more patients.

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