Restorative Dentistry and Endodontics

  • 제28권2호
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  • Pages.127-133
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  • 2003
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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다양한 복합레진 시스템의 변연 누출도

MICROLEAKAGE OF VARIOUS COMPOSITE RESIN SYSTEMS

  • 김인수 (단국대학교 치과대학 보존학교실) ;
  • 민경산 (단국대학교 치과대학 보존학교실) ;
  • 신동훈 (단국대학교 치과대학 보존학교실)
  • Kim, In-Soo (Dept. of Conservative Dentistry, School of Dentitstry, Dankook University) ;
  • Min, Kyung-San (Dept. of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Shin, Dong-Hoon (Dept. of Conservative Dentistry, School of Dentistry, Dankook University)
  • 발행 : 2003.03.01
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초록

The object of this study was to compare the microleakage between various composite resin systems of multistep, one-bottle, and self-etching systems using electrical conductivity. After making class V cavities ($4{\times}3{\times}1.5{\;}mm$ around CEJ), they were bulk filled with three kinds of resins of A3. Teeth were storaged in a saline solution for one day, after then, they were finished and polished using Sof-Lex system. Another stress of thermocycling was made for 500 times from $5^{\circ}{\;}to{\;}55^{\circ}C$ with each dwelling time of 10 seconds. Electrical conductivity (microamphere, $\mu\textrm{A}$) was checked four times: before and after cavity preparation, after filing, after thermocycling. One-way ANOVA and 95% Scheffe Post Hoc test was used for checking any statistical difference among groups. Another 95% Paired Samples T-test was also used for estimating any significant difference within group after cavity filling or thermocycling. The results were as follows: 1 Every specimen showed various range of microleakage after filing. There was, however, no difference between composite resin systems. 2. All composite resin systems showed marked increase in microleakage with a thermocycling (p<0.05), there was, however, no difference between composite resin systems. 3. Although there was no significant difference between groups (p=0.078), one-bottle and self-etching systems seemed to be unstable than multistep system. Within the limits of this study, it was concluded that much more consideration should be needed when using thermally unstable one-bottle and self-etching systems that have multi-advantages from simplified step. More studies will be needed to solve these kinds of problems.

키워드

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피인용 문헌

  1. Effect of a new resin monomer on the microleakage of composite resin restorations vol.32, pp.5, 2007, https://doi.org/10.5395/JKACD.2007.32.5.469