Proceedings of the KACD Conference (대한치과보존학회:학술대회논문집)

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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A study of polymerization shrinkage of composite resins cured by various light intensities

  • Lim, Mi-Young (Department of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Hong, Chan-Ui (Department of Conservative Dentistry, School of Dentistry, Dankook University)
  • Published : 2003.11.01
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Abstract

The purpose of this study was to compare the effect of exponential curing method with conventional curing and two step soft start curing method on polymerization shrinkage of composite resins. Three brands of composite resins (Synergy Duo Shade, Z-250, Supreme) and three brands of light curing units (Spectrum 800, Elipar Highlight, Elipar Trillight) were used. In this study, the diameter of specimen was 5.5mm and height 1.6mm and the specimen was cured for 40 seconds. The shrinkage was measured by custom made linometer. The amount of linear polymerization shrinkage recorded in the computer every 0.5 second for 90 seconds. Each group was measured 10 times.(omitted)

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