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The Property Change of Silicone Impression Materials with Change of Storage Temperature  

Oh, Sang-Hwan (Dept. of Dental Hygiene, College of Medical Science, Konyang University)
Moon, Seung-Kyun (Brain Korea 21 Project, Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry, Yonsei University)
Kim, Kyoung-Nam (Brain Korea 21 Project, Department and Research Institute of Dental Biomaterials and Bioengineering, College of Dentistry, Yonsei University)
Publication Information
Journal of dental hygiene science / v.10, no.6, 2010 , pp. 459-464 More about this Journal
Abstract
The purpose of this study was to evaluate the physical properties of hydrophilic polyvinyl siloxane impression materials as change of material's storage temperatures. Working time, strain-in-compression, elastic recovery and consistency were tested according to ISO Standard NO. 1563. The results are as followed. 1. Working time decreased in cold storage. 2. Strain-in-compression was different in storage temperatures. Material's strain-in compression in cold temperatures were higher than in room temperature and in incubator. 3. A coefficient of elastic recovery varied by storage temperatures. The rate in cold temperature was the lowest and in incubator was the highest. 4. Consistency of impression substance different in storage temperatures. The extent in cold temperature is the highest and in incubator was the lowest. Statistical analysis(SPSS 14.0k, p>0.05) showed that storage temperature affect to material's physical properties. We recognized that the physical properties of polyvinyl siloxane impression materials were changed according to storage temperature.
Keywords
Consistency; Elastic recovery; Polyvinyl siloxane impression; Storage temperature; Strain-in-compression; Working time;
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