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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: A comparison of dimensional accuracy between three different addition cured silicone impression materials.
    Author: Forrester-Baker L, Seymour KG, Samarawickrama D, Zou L, Cherukara G, Patel M.
    Journal: Eur J Prosthodont Restor Dent; 2005 Jun; 13(2):69-74. PubMed ID: 16011234.
    Abstract:
    Ten impressions of a metal implant abutment were made with each of three addition-cured silicone impression materials. Using the technique of co-ordinate metrology, the shoulder region of the abutment and corresponding regions of both impressions and dies made from these impressions were scanned and measured. Comparison of these measurements indicated that the mean dimension measured from the shoulder region for each group of impression materials was significantly different from those taken from the original metal implant abutment. However, when these impressions were cast in a gypsum based die material, none of the measured dimensions taken from the casts were significantly different from those taken from the original metal implant abutment. Thus, any change in measured dimensions occurring during impression making, was compensated for in some way by the casting process.
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