Acceleration of curing of resin composite at the bottom surface using slow-start curing methods

Dent Mater J. 2013;32(6):999-1004. doi: 10.4012/dmj.2013-210. Epub 2013 Nov 15.

Abstract

The aim of this study was to evaluate the effect of two slow-start curing methods on acceleration of the curing of resin composite specimens at the bottom surface. The light-cured resin composite was polymerized using one of three curing techniques: (1) 600 mW/cm(2) for 60 s, (2) 270 mW/cm(2) for 10 s+0-s interval+600 mW/cm(2) for 50 s, and (3) 270 mW/cm(2) for 10 s+5-s interval+600 mW/cm(2) for 50 s. After light curing, Knoop hardness number was measured at the top and bottom surfaces of the resin specimens. The slow-start curing method with the 5-s interval caused greater acceleration of curing of the resin composite at the bottom surface of the specimens than the slow-start curing method with the 0-s interval. The light-cured resin composite, which had increased contrast ratios during polymerization, showed acceleration of curing at the bottom surface.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Dental Bonding / methods*
  • Hardness Tests
  • Resins, Synthetic*

Substances

  • Resins, Synthetic