Relative Merits of Narrow Versus Standard Diameter Light Guides

Research output: Contribution to journalArticlepeer-review


Colleges, School and Institutes


The purpose of this study was to assess the relative effectiveness of narrow versus standard diameter light guides at curing the initial increment of composite in a deep cavity. The micro-hardness of 2 mm thick samples of a light activated microfilled posterior composite was determined. Composite was irradiated at 0, 1 or 6 mm light guide tip/composite surface distances. Light intensity was measured with a computer-based radiometer. Lower surface cure was reduced with increasing light guide tip distances. Narrow diameter guides offered no advantage over standard guides for polymerisation of the initial increment of composite in the base of a cavity.


Original languageEnglish
Pages (from-to)19-23
Number of pages5
JournalThe European journal of prosthodontics and restorative dentistry
Issue number1
Publication statusPublished - 1 Mar 2001