Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Effect of beverages on viscoelastic properties of resin-based dental composites
AU - Kaleem, M.
AU - Khan, A.S.
AU - Rehman, I.U.
AU - Wong, F.S.
PY - 2015
Y1 - 2015
N2 - The viscoelastic properties of three commercially available resin-based composites (Filtek™ P60, Filtek™ Supreme, and Filtek™ Z250; 3M ESPE, Bracknell, UK) were measured to determine the effect of beverages on their storage moduli and damping ratios. Rectangular samples of the three hybrid composites were immersed in three beverages at 37 °C for 1, 7, 30, and 60 days. At each time interval, these samples were subjected to three-point bend tests in temperature mode using a Perkin Elmer DMA7 Dynamic Mechanical Analyzer (Perkin Elmer Corp., Waltham, MA, USA) to measure the storage modulus and damping ratio. The immersion time had significant influence on the viscoelastic property of composites and it was found that generally for all samples the storage modulus was reduced, whereas damping values increased with immersion time. The viscoelastic behavior of tested materials seems to be related to the pH environment, hydrophilicity and the chemical composition of composites. © 2015 by the authors.
AB - The viscoelastic properties of three commercially available resin-based composites (Filtek™ P60, Filtek™ Supreme, and Filtek™ Z250; 3M ESPE, Bracknell, UK) were measured to determine the effect of beverages on their storage moduli and damping ratios. Rectangular samples of the three hybrid composites were immersed in three beverages at 37 °C for 1, 7, 30, and 60 days. At each time interval, these samples were subjected to three-point bend tests in temperature mode using a Perkin Elmer DMA7 Dynamic Mechanical Analyzer (Perkin Elmer Corp., Waltham, MA, USA) to measure the storage modulus and damping ratio. The immersion time had significant influence on the viscoelastic property of composites and it was found that generally for all samples the storage modulus was reduced, whereas damping values increased with immersion time. The viscoelastic behavior of tested materials seems to be related to the pH environment, hydrophilicity and the chemical composition of composites. © 2015 by the authors.
KW - Beverages
KW - Dental composites
KW - Storage modulus
KW - Viscoelasticity
KW - Damping
KW - Elastic moduli
KW - Resins
KW - Storage (materials)
KW - Chemical compositions
KW - Dynamic mechanical analyzer
KW - Rectangular samples
KW - Resin-based composite
KW - Resin-based dental composites
KW - Three point bend tests
KW - Visco-elastic behaviors
KW - Viscoelastic properties
U2 - 10.3390/ma8062863
DO - 10.3390/ma8062863
M3 - Journal article
VL - 8
SP - 2863
EP - 2872
JO - Materials
JF - Materials
SN - 1996-1944
IS - 6
ER -