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친수성 polyvinylsilixane 인상재의 putty와 light body의 결합강도

Other Titles
 Bond Strength between Putty & Light Body of Hydrophilic Polyvinylsiloxane Impression Materials 
Authors
 강재경  ;  김경남  ;  조리라  ;  정경호 
Citation
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.27(4) : 341-347, 2000 
Journal Title
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지) 
ISSN
 1225-1631 
Issue Date
2000
Keywords
tensile ; bond ; strength
Abstract
Polyvinylsiloxane is the most accurate and dimensionally stable material among the dental impression materials which replicate the teeth and oral tissues. There are two methods for taking impressions with the polyvinylsiloxane: one step simultaneous polymerization; and putty/wash two step reline technique. The purpose of this study was to evaluate tensile bond strength between putty and wash material under the conditions of contamination with saliva or water at taking impression by putty/wash technique. The materials used in this study were 4 hydrophilic polvinylysiloxane impression materials of putty and light body type(Perfect-F, Handae Chemical, Korea; Contrast, VOCO, Germany; Exaflex and Examix, GC, Japan; Express and Imprint Ⅱ, 3M, U.S.A.). First, putty material filled in one perforated metal mold with diameter of 15 ㎜ and height of 19 ㎜ was set, and it was bonded with light body material filled in other paired metal mold before setting. Tensile bond strength was measured at a cross-head speed of 300 ㎜/min by universal testing machine (Instron 6022, Instron Co., U.K.) after 10 minutes from the joining two mold in order to set completely. As results, tensile bond strength of Contrast, Examix and Perfect-F showed no significant difference with control group on contamination with saliva or water, and it showed cohesive failure in the light body. However, Imprint Ⅱ showed the highest strength among these tested materials and showed adhesive failure at 5 specimens in the case of contamination with saliva and 4 specimens with water. From the results of this study, each product use possible cross bond and the tensile bond strength of some materials showed lower value on contamination with saliva.
Full Text
http://www.dbpia.co.kr/pdf/pdfView.do?nodeId=NODE02377261
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/172360
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