| The effect of irradiation distance on microhardness of resin composites cured with different light curing units. | |
| | |
MedLine Citation:
|
PMID: 20922164 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
OBJECTIVES: The aim of this study was to compare the microhardness of five different resin composites at different irradiation distances (2 mm and 9 mm) by using three light curing units (quartz tungsten halogen, light emitting diodes and plasma arc). METHODS: A total of 210 disc-shaped samples (2 mm height and 6 mm diameter) were prepared from different resin composites (Simile, Aelite Aesthetic Enamel, Clearfil AP-X, Grandio caps and Filtek Z250). Photoactivation was performed by using quartz tungsten halogen, light emitting diode and plasma arc curing units at two irradiation distances (2 mm and 9 mm). Then the samples (n=7/per group) were stored dry in dark at 37°C for 24 h. The Vickers hardness test was performed on the resin composite layer with a microhardness tester (Shimadzu HMV). Data were statistically analyzed using nonparametric Kruskal Wallis and Mann-Whitney U tests. RESULTS: Statistical analysis revealed that the resin composite groups, the type of the light curing units and the irradiation distances have significant effects on the microhardness values (P<.05). CONCLUSIONS: Light curing unit and irradiation distance are important factors to be considered for obtaining adequate microhardness of different resin composite groups. |
| | |
Authors:
|
Isil Cekic-Nagas; Ferhan Egilmez; Gulfem Ergun |
Related Documents
:
|
20379684 - Effect of light-curing units in shear bond strength of metallic brackets: an in vitro s... 16911424 - Accuracy of led and halogen radiometers using different light sources. 17571904 - High-throughput screening using porous photoelectrode for the development of visible-li... 1224134 - The mucociliary activity of the upper respiratory tract. 10664764 - Adaptive filtering in spatial vision: evidence from feature marking in plaids. 9450284 - Influence of magnitude of horizontal and vertical deformation on preference for morphed... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: European journal of dentistry Volume: 4 ISSN: 1305-7464 ISO Abbreviation: Eur J Dent Publication Date: 2010 Oct |
Date Detail:
|
Created Date: 2010-10-05 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101303672 Medline TA: Eur J Dent Country: Turkey |
Other Details:
|
Languages: eng Pagination: 440-6 Citation Subset: - |
Affiliation:
|
Research associate, Dental School of Technology, Hacettepe University, Ankara, Turkey. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Permeability of Dental Adhesives - A SEM Assessment.
Next Document: The prevalence and treatment outcomes of primary tooth injuries.