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Relative efficiency of radiation sources for photopolymerization

Lookup NU author(s): Dr Rie Nomoto, Professor John McCabe

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Abstract

The aim of this study was to evaluate the characteristics of new-generation light-emitting diode (LED) units in comparison with the conventional tungsten-halogen, plasma arc, and first-generation LED units reported in our previous study. The irradiance of light from new-generation LED units, the temperature rise of the bovine enamel surface, and the depth of cure of composites exposed to each unit were investigated. The irradiances in the range 400-515 nm emitted from the new-generation LED units were greater than those from the first-generation LED units. The temperature increase was 15-25A degrees C for new-generation LED units compared with a typical value of 5A degrees C for the first-generation LED units at 10 s of irradiation. The relationship between the depth of cure and the logarithm of total exposure energy suggested that LED units can cure light-cured composite resins more efficiently than tungsten-halogen or plasma arc units.

Publication metadata

Author(s): Nomoto R, McCabe JF, Nitta K, Hirano S

Publication type: Article

Publication status: Published

Journal: Odontology

Year: 2009

Volume: 97

Issue: 2

Pages: 109-114

ISSN (print): 1618-1247

ISSN (electronic):

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10266-009-0105-8

DOI: 10.1007/s10266-009-0105-8

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