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Force application and decay characteristics of untreated and treated polyurethane elastomeric chains
Polyurethane elastomers Stress-relaxation Residual load Maxwell model
2009/1/12
In this study the effects of prestressing, environmental acidity, oxygen content, and temperature on mechanical properties were measured for three polyurethane-based orthodontic elastomeric chains...
Microbiological Evaluation of Elastomeric Chains
Elastomeric chain Microorganisms Contamination
2008/11/7
Objectives: To evaluate in vitro the surface of elastomeric chains of different manufacturers to verify the presence of pathogenic microorganisms at the moment of unpacking and analyze a possible inhi...