The effect of light curing tip distance on curing depth of resin composite : a comparative study
Author
Source
Issue
Vol. 7, Issue S (30 Apr. 2007), pp.78-83, 6 p.
Publisher
University of Mosul College of Dentistry
Publication Date
2007-04-30
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Topics
Abstract EN
Aims : to determine the correlation between intensity (I) of light–emitting diode (LED) and tungsten–halogen light sources, and depth of cure of a resin composite at different distances.
Materials and Methods : LED curing light (Ultra Lite 200E plus) and tungsten halogen light (Astralis 5 Vivadent) were evaluated.
Intensity was measured at distances of 0, 2, 4, 6, 8, and 10 mm between the light tip and detector.
A blackened aluminum plate, 0.5 mm thick, with a 4mm–diameter aperture was placed over the detector.
The use of this aperture limited the amount of light reaching the detector to a uniform area for both curing lights and also corres-ponded to the area of the mould for the depth of cure studies.
Both light tips were centered on this aperture to reduce any influence of varying me across the light tip.
Depth of cure (DOC) of light–curing universal micro hybrid composite shade A2 was also measured.
A metallic mound was used to measure the depth of cure at distances of 0, 2, 4, 6, 8, and 10mm between light tip and mound.
The degree of divergence of the light of both light curing units was also determined by tracing the illuminated area at a 10 mm distance for each of the curing lights.
Results : For both lights, intensity decreased as distance increased.
While, both I and DOC decrease with increasing distance, the relationship between these factors and distance may not be similar for both lights and may depend on the characteristics of individual lights.
Conclusions : both I and DOC decreased with increasing distances.
DOC usually decreases with de-creasing me, the rate of decline varies between various light brands.
American Psychological Association (APA)
Qasim, Ashraf S.. 2007. The effect of light curing tip distance on curing depth of resin composite : a comparative study. al-Rafidain Dental Journal،Vol. 7, no. S, pp.78-83.
https://search.emarefa.net/detail/BIM-276808
Modern Language Association (MLA)
Qasim, Ashraf S.. The effect of light curing tip distance on curing depth of resin composite : a comparative study. al-Rafidain Dental Journal Vol. 7, عدد خاص (Apr. 2007), pp.78-83.
https://search.emarefa.net/detail/BIM-276808
American Medical Association (AMA)
Qasim, Ashraf S.. The effect of light curing tip distance on curing depth of resin composite : a comparative study. al-Rafidain Dental Journal. 2007. Vol. 7, no. S, pp.78-83.
https://search.emarefa.net/detail/BIM-276808
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 82-83
Record ID
BIM-276808