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Flexural properties of some experimental dental glass fiber reinforced composites with different resin matrices

C. PREJMEREAN1,* , A. PETRESCU2, T. BURUIANA3, L. STANULET4, M. MOLDOVAN1, C. NICOLA5, M. TRIF1, G. FURTOS1, A. COLCERIU1, C. TAMAS1, D. PRODAN1

Affiliation

  1. “Raluca Ripan” Institute of Chemistry, 400294 Cluj-Napoca, Romania
  2. IMA-METAV, Bucuresti, Romania
  3. “Petru Poni”, Institute of Macromolecular Chemistry, Iasi, Romania
  4. ICPAO, Medias, Romania
  5. “Iuliu Hatieganu” University of Medicine and Pharmacy, Faculty of Dentistry, Cluj-Napoca, Romania

Abstract

There was prepared a series of 12 experimental fiber reinforced composites (FRCs) based on continuous unidirectional bundles of E glass fibers and resins consisting of Bis-GMA0 monomer- 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy) phenyl]-propane-, Bis-GMA0-2 superior oligomers having 81 mol % Bis-GMA0 monomer, 17 mol % Bis-GMA1 dimer and 2 mol % Bis-GMA2 trimer, a cicloalyphatic urethane dimetacrylate monomer, and triethyleneglycol dimethacrylate in different ratios. The relationship between the resin composition, the quantity of fibers and the flexural properties of harden FRCs has been investigated The values of flexural properties obtained for the FRCs originated from experimental resins and one bundle of fibres (4000 fibers) were in the range of 295-407.5 MPa for flexural strength and 7.3-8.9 MPa for Young’s modulus. For the composites originated from two bundles of fibres (8000 fibers) and investigated resins, the flexural strength ranged between 675-738 MPa, and the Young’s modulus ranged between 16.37-19.47 MPa. The results pointed out a slight tendency of increasing the flexural properties in the case of using (Bis-GMA)0-2 oligomers instead of (Bis-GMA)0 monomer. It can be noticed that the flexural strength of FRCs which contain two bundles of fibers was about 1.5 up to 2 times higher than that of FRCs with the same resin matrix and one bundle fibers..

Keywords

Fiber reinforced composites, Dental, flexural properties.

Submitted at: March 23, 2007
Accepted at: Nov. 16, 2007

Citation

C. PREJMEREAN, A. PETRESCU, T. BURUIANA, L. STANULET, M. MOLDOVAN, C. NICOLA, M. TRIF, G. FURTOS, A. COLCERIU, C. TAMAS, D. PRODAN, Flexural properties of some experimental dental glass fiber reinforced composites with different resin matrices, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 11, pp. 3361-3363 (2007)