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온도변화에 따른 치과용 인상재의 크기변화

Other Titles
 Dimensional Changes of Dental Impression Materials by Thermal Changes 
Authors
 김광만  ;  이종석  ;  김경남  ;  신상완 
Citation
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.25(2) : 187-192, 1998 
Journal Title
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지) 
ISSN
 1225-1631 
Issue Date
1998
Abstract
Dental impression materials are necessary for prosthodontic treatment and should have some desirable properties that easy to use, reprocuctibility to oral tissue, dimensional stability and compatibility to gypsum materials and additional silicone impression materials are used mostly. All materials have dimensional charge by thermal changes. So, impression materials shrink during cooing from oral temperature(37℃) to room temperature(23℃). 5 kinds of light body of addition silicone materials(Imprint Ⅱ(IM), 3M Co., USA; Examix(EX), GC Co., Japan; Extrude(EX), Kerr Co., USA; Contrast(CT), Voco Co., Germany; Perfect(PF), Hankook JP, Korea) were chosen and the cylinderical specimens(6 ㎜ dia., 12㎜ height)were made and thermal expansion were measured by thermomechanical analyzer(TMA 2940, TA Instrument, U.S.A.) between 23℃ and 37℃. The data were analyzed by Mann Whitney U-Test. The results were as follows: 1. Thermal expansions of impression materials were increased in order to CT>PF) EM>EX≥IM(p<0.05). 2. Anterior area had more dimensional change than posterior area in same impression materials. In conclusion, thermal expansions of impression materials were significantly different from each other(p<0.05), and anterior area had more dimensional change than posterior area in same impression materials.
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176791
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