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The fracture toughness of dental composites
Author(s) -
LLOYD C. H.
Publication year - 1982
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1982.tb00543.x
Subject(s) - composite material , fracture toughness , materials science , fracture (geology) , absorption of water , composite number , fracture mechanics , polymerization , dental composite , polymer
Summary A fracture mechanics approach has been adopted to quantify the failure of dental composites under stress. The parameter K IC has been determined by the use of SEN specimens subject to the variables of composite product type, storage environment, test environment and temperature, and polymerization time. The results show that K Ic varies from product to product, increasing significantly if there is sufficient time for the absorption of storage water. The effect of test environment and temperature (over the range expected in vivo ) is minor.