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Irradiance from 12 LED light curing units measured using 5 brands of dental radiometers
Objective To evaluate the accuracy of five brands of radiometers in reporting the irradiance (mW/cm2) from twelve brands of LCUs compared to a ‘Gold Standard’ (GS) reference obtained from a hand‐held laboratory‐grade radiometer. Materials and Methods The irradiance was measured from two examples of...
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Published in: | Journal of esthetic and restorative dentistry 2023-09, Vol.35 (6), p.968-979 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Objective
To evaluate the accuracy of five brands of radiometers in reporting the irradiance (mW/cm2) from twelve brands of LCUs compared to a ‘Gold Standard’ (GS) reference obtained from a hand‐held laboratory‐grade radiometer.
Materials and Methods
The irradiance was measured from two examples of twelve brands of previously used LCUs on two examples of five brands of dental radiometers. The emission spectrum was also obtained. Irradiance data from each brand of LCU against each meter was analyzed using the Shapiro–Wilk test for normality. The irradiance values were subjected to a two‐way ANOVA followed by Bonferroni tests for each LCU brand. Finally, a descriptive analysis was made using a 95% confidence interval around the mean irradiance.
Results
The power output from the LCUs ranged from 271 mW to 1005 mW. Among the tested radiometers, only the Bluephase Meter II could accurately report the irradiance from 11 out of the 12 brands of LCU evaluated in this study. When measured using the “GS” system, the mean irradiance values from the two examples of nine brands of previously used LCU were not always within ±10% of the irradiance values stated by the manufacturer.
Conclusions
The mean irradiance values from 9 of the 12 brands of used LCUs were beyond ±10% of the irradiance values stated by the manufacturer. Only the Bluephase Meter II could accurately report the irradiance from 11 out of the 12 brands of LCU evaluated in this study.
Clinical Significance
There was a wide range in the power output from the LCUs tested. It was impossible to accurately measure the irradiance from all the LCUs using the dental radiometers examined. However, dental radiometers should still be used in dental offices to monitor the light output from LCUs and verify that they are working correctly before they are used on patients. |
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ISSN: | 1496-4155 1708-8240 |
DOI: | 10.1111/jerd.13107 |