Comparison of the viscoelastic behaviour of pre-impregnated reinforced glass fibre composite with resin based hybrid composite

Khan, A.S., Phillips, M.J., Tanner, K.E. and Wong, F.S. (2008) Comparison of the viscoelastic behaviour of pre-impregnated reinforced glass fibre composite with resin based hybrid composite. Dental Materials, 24(11), pp. 1534-1538. (doi: 10.1016/j.dental.2008.03.017)

Abstract

<b>Objectives</b>: The visco-elastic behavior of a pre-impregnated reinforced glass fiber composite (everStick®) was compared with a resin-based particulate composite (FiltekTM P60) by using dynamic mechanical analysis (DMA) to determine their storage modulus (E) and damping ratio (tan ı). <b>Methods:</b> These materials were subjected to three-point bend tests using a PerkinElmer DMA7. In temperature mode, the temperature was increased from 26 to 140 ◦C at 1 Hz. In frequency mode, the range was 1–10 Hz at a constant temperature of 37 ◦C. <b>Results:</b> In both temperature and frequency modes, E for everStick® was significantly higher and tan ı was significantly lower than those for FiltekTM P60, indicating that the stiffness of the pre-impregnated glass fiber composite was higher and its damping property was lower than those for resin-based particulate composite. Significance. The glass fiber restorative composite appears to absorb less energy in repeated stress and is less likely to retain external energy as resid

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Tanner, Professor Kathleen
• Authors: Khan, A.S., Phillips, M.J., Tanner, K.E., and Wong, F.S.
• Subjects: R Medicine > RK Dentistry
• College/School: College of Science and Engineering > School of Engineering > Biomedical Engineering
• Research Group: Materials Group
• Journal Name: Dental Materials
• ISSN: 0109-5641