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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Waxes for functional impressions.
    Author: Kotsiomiti E, McCabe JF.
    Journal: J Oral Rehabil; 1996 Feb; 23(2):114-20. PubMed ID: 8850062.
    Abstract:
    The aim of this study was to develop a wax suitable to serve as a functional impression material. Several binary mixtures of paraffin, beeswax and rosin were prepared. They were characterized by differential thermal analysis (DTA), and tested for plastic deformation, thermal expansion, detail reproduction and mechanical properties. It was found that the combinations of paraffin with rosin can function well as impression materials, as they combine a high value of plastic deformation at 37 degrees C with relatively low values at room temperature. Concentrations of rosin as small as 1% or 2% are adequate to produce this result. The flow of paraffin was significantly reduced by the addition of beeswax. A linear relationship was found between the 37 degrees C flow values of paraffin-beeswax mixtures and the proportions of the ingredients.
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