For taking accurate impressions, many material characteristics of the impression materials must be well understood. It is especially important to analyze the viscoelastic behavior of the impression materials. In our study, seven commercial alginate impression materials were used, and their linear viscoelasticity was measured using a creep meter (RE-3305, Yamaden Co.). The measurement condition ...

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The choice of an impression material for a particular situation depends on the treatment being provided, operator preference, and so on. Even with the introduction of more advanced and more accurate rubber base impression materials, irreversible hydrocolloid impression materials have stood the test of time. This article gives a detailed perspective of how best to make alginate impressions.

Background and Objectives: Cold water disinfection can damage the elastomeric material, cross contamination in handling elastomeric ligatures is a serious concern in the orthodontic office. In addition, elastomeric strips with enough ligatures for both arches of a single patient are produced by most manufacturers. Thus, cross -contamination can occur in remaining ligatures if an entire strip is...