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 15-25 degrees C for new-generation LED units compared with a typical value of 5 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.
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Authors | Rie Nomoto, John F McCabe, Keiko Nitta, Susumu Hirano |
Journal | Odontology
(Odontology)
Vol. 97
Issue 2
Pg. 109-14
(Jul 2009)
ISSN: 1618-1247 [Print] Japan |
PMID | 19639454
(Publication Type: Comparative Study, Evaluation Study, Journal Article)
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Chemical References |
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Topics |
- Animals
- Cattle
- Composite Resins
(radiation effects)
- Curing Lights, Dental
(classification)
- Dental Enamel
(radiation effects)
- Dose-Response Relationship, Radiation
- Light-Curing of Dental Adhesives
(instrumentation, methods)
- Temperature
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