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:: Volume 20, Issue 4 (4-2018) ::
JBUMS 2018, 20(4): 42-47 Back to browse issues page
comparation of the the Effects of LEDs and QTH Light Cure units on Composite Hardness: A Systematic Review and Meta-Analysis
A Sarraf , S Majidinia , Z Hosseinyar
, majidinias@mums.ac.ir
Abstract:   (698 Views)
Objective: Lightcured composites allow dentists to begin the process of polymerization on demand. The purpose of this meta-analytical study is to compare the effectiveness of light curing LEDs and QTH devices on the hardness of composites.
Methods & Materials: Two analyzes were carried out with a radiation intensity of less than 500 and more than 500 mW / cm2. The thickness of the cured composite in both groups was considered to be 2 mm. Non-matched articles with the variables mentioned in the study were deleted. Data were analyzed using the Biostat software using the random effects model (α = 0.05(
 Results: Using the random effects model, there was no significant difference between the hardness of 2 mm thickness of the composite after curing with LED and QTH at light intensity higher than  500 mW / cm2 (p = 0.43) but there was a significant difference (p = 0.000)at an intensity less than 500 mW/ Cm2.
Conclusion: The lightcure LED device was better in terms of its effect on the hardness of composites at below 500 mW / cm2 intensity than QTH, but did not show significant differences at levels above 500.
Keywords: Composite – Hardness- LED Light curing device - QTH Light curing device
Type of Study: Review | Subject: d
Received: 2017/10/22 | Accepted: 2018/03/3 | Published: 2018/03/17
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Sarraf A, Majidinia S, Hosseinyar Z. comparation of the the Effects of LEDs and QTH Light Cure units on Composite Hardness: A Systematic Review and Meta-Analysis. JBUMS. 2018; 20 (4) :42-47
URL: http://jbums.org/article-1-7245-en.html

Volume 20, Issue 4 (4-2018) Back to browse issues page
مجله علمی دانشگاه علوم پزشکی بابل Journal of Babol University of Medical Sciences

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