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Mechanical Testing and Evaluation of Eight Synthetic Casting Materials
Author(s) -
BARTELS KENNETH E.,
PENWICK ROGER C.,
FREEMAN LYN J.,
LOWERY RICHARD L.,
ALEXANDER TOM,
APPLEMAN KENT,
BLOUNT CATHRYN
Publication year - 1985
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1985.tb00894.x
Subject(s) - ultimate tensile strength , casting , medicine , composite material , radiodensity , porosity , exothermic reaction , polymerization , curing (chemistry) , permeability (electromagnetism) , materials science , polymer , radiography , surgery , chemistry , organic chemistry , membrane , biology , genetics
Eight synthetic casting materials were evaluated with respect to tensile and fatigue strengths, exothermicity (evolution of heat during polymerization), permeability (porosity), radiolucency, and cost. Strength determination for a five‐layer sample included measurement of the ultimate load at which a material failed, the ability to absorb energy, and the stiffness a material possessed after application of a cyclic stress. Results indicated that Vet Cast was superior with respect to tensile and fatigue strengths. The exothermic reaction associated with the “curing” or polymerization process was evaluated and not considered excessive although Ultra Cast attained a temperature of 48.0°C and was uncomfortable to handle during application. Permeability was determined. Delta Lite and Hexcelite NS were the most permeable materials and dried more rapidly and thoroughly after immersion than the other casting materials. Hexcelite NS was considered the least radiolucent material and was the most expensive material studied. Each of the synthetic casting materials demonstrated superiority in one or more of the categories tested. No one product demonstrated consistent superiority in criteria appropriate for clinical application.