Polymerization efficiency of dental dual-cured resin cement light-cured at various times after the initiation of chemical activation

Ji Suk Shim, Soo Young Lee, So Yeon Song, Nayansi Jha, Jae Jun Ryu

Research output: Contribution to journalArticle

Abstract

This study reports the effect of light-exposure timing on the polymerization results of the dental dual-cured resin cement using multiple measurements over time. Specimens were light-polymerized at 5 different delayed time points after mixing the materials: immediate (1 min), 10 min, 30 min, 60 min, and 2 weeks. The degree of conversion (DC) measurement with infrared spectroscopy (IR) measurements and surface hardness test with Vickers diamond indenter was performed. The group that underwent immediate light-curing showed statistically lower DC at 2 weeks compared to groups with provided longer delay time in light-curing. (p < 0.05).

Keywords

  • Dental resin
  • dual-cured resin cement
  • infrared spectroscopy
  • light-curing
  • polymerization

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Polymers and Plastics

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