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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국치위생학회 한국치위생학회지 한국치위생학회지 제8권 제4호
발행연도
2008.1
수록면
89 - 99 (11page)

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In this study, polyvinylsiloxane impression materials were investigated to examine the characteristics of the impression materials that affect the accuracy of the final restoration. The flow property of impression materials which can reproduce the detail in the oral cavity and accurately duplicate it, and the tear strength and strain-in-compression which can cause problems when it is being removed from the oral cavity were studied. The results are as follows. 1. As for the flow properties of impression materials, ImprintⅡ was 18.24±0.30, which was the highest; and Twinz was 8.9±0.62, which was the lowest. There was no significant difference among ImprintⅡ, Examixfine, and Genie(p<0.05). 2. As for the tear strength of impression materials, ImprintⅡ had the highest level, while Genie had the lowest value. There was no significant difference between Twinz and Genie(p<0.05). 3. As for the strain-in-compression, there were significant differences by impression material groups(p<0.05); the strain-in-compression of Examixfine was shown to be the highest at 5.56±0.56, Twinz and ImprintⅡ followed respectively, and Genie has the lowest at 3.19±0.23. 4. Flow showed the correlation with tear strength but no significant connection to strain-in-compression. Also, there was no significant correlation between the tear strength and strain-in-compression(p<0.05). Making impression to reproduce oral tissue and tooth is an important part of making final restoration. The accuracy of impressions is influenced by the methods of taking impression or other condition. However the property itself of impression materials is the most essential and the materials with proper qualities should be selected.

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