We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
Chinese Journal of Dental Research
Chin J Dent Res 14 (2011), No. 1     15. June 2011
Chin J Dent Res 14 (2011), No. 1  (15.06.2011)

Page 15-19, PubMed:21734942


Fracture Toughness, Compressive Strength and Load-bearing Capacity of Short Glass Fibre-reinforced Composite Resin
Garoushi, Sufyan / Vallittu, Pekka K. / Lassila, Lippo V. J.
Objective: To investigate the reinforcing effect of short E-glass fibre fillers on fracture related mechanical properties of dental composite resin with a semi-interpenetrating polymer network (IPN) polymer matrix.
Methods: Experimental short fibre composite (FC) resin was prepared by mixing 22.5 wt% of short E-glass fibres, 22.5 wt% of IPN-resin and 55 wt% of silane treated silica fillers using a high speed mixing machine. Test specimens were made bar shaped (3 × 6 × 25 mm3), cylindrical (6 mm length × 3 mm diameter) and cubic (9.5 × 5.5 × 3 mm3) from the experimental FC resin and conventional particulate composite resin (Grandio) as control. The test specimens (n = 8) were either dry stored or water stored (37°C for 30 days) before the mechanical tests. A three-point loading test and compression test were carried out according to ISO 10477 and a static loading test was carried out using a steel ball (Ø 3.0 mm) with a speed of 1.0 mm/min until fracture.
Results: Experimental fibre composite had a significantly higher mechanical performance for fracture toughness (14 MNm-1.5), compression strength (129 MPa) and static load-bearing capacity (1584 N) than the control composite (2 MNm-1.5, 112 MPa and 1031 N).
Conclusion: The resin with short E-glass fibre fillers and IPN-polymer matrix yielded improved mechanical performance compared to the conventional particulate composite resin.

Keywords: compression strength, fibre-reinforced composite, fracture toughness, restorative composite