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Effects of the initial temperature of acrylic bone cement liquid monomer on the properties of the stem–cement interface and cement polymerization
Author(s) -
Iesaka K.,
Jaffe W. L.,
Kummer F. J.
Publication year - 2003
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.20020
Subject(s) - materials science , cement , polymerization , porosity , composite material , monomer , bone cement , polymer
It has been shown that preheating the femoral stem prior to insertion minimizes interfacial porosity at the stem–cement interface. In this study, the effects of methylmethacrylate monomer temperature prior to mixing on the properties of stem–cement interface and cement polymerization were evaluated for 4 °C, room temperature, and 37 °C using a test model and cementing techniques that simulated a clinical situation. The nature and extent of interfacial porosity of stem–cement interface was quantified, the static shear strength of the stem–cement interface determined, and the time and temperature of polymerization at the cement–bone interface were measured. Compared to RT monomer, preheating monomer to 37 °C produced higher polymerization temperatures and greater initial interfacial shear strength with an unchanged amount of interfacial porosity. Precooling monomer to 4 °C produced lower polymerization temperatures and decreased initial interfacial shear strength, with the amount of interfacial porosity unchanged compared to the RT group. Although clinical techniques of preheating or precooling bone cement have some effects on the properties of the stem–cement interface and cement polymerization, they do not appear to enhance implant fixation. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 68B: 186–190, 2004