PDF herunterladen
Open Access
CC BY 4.0 · European Journal of General Dentistry 2022; 11(02): 123-131
DOI: 10.1055/s-0042-1757161
Original Article

Effect of Battery Discharge on the Output from Budget Light-Curing Units

Autoren

  • Afnan O. Al-Zain 

    1   Restorative Dentistry Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

  • Ibrahim M. Alshehri

    2   Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

  • Hattan M.H. Jamalellail

    2   Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

  • Richard B. Price 

    3   Department of Dental Clinical Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, Canada
Weitere Informationen
Auch verfügbar auf
  Lizenzen und Reprints

Abstract

Objectives The manufacturers of budget light-curing units (LCUs) often claim to provide high-quality units that are equivalent to LCUs from major manufacturers. This study investigated the effects of battery discharge on the light output from different budget LCUs compared to a major manufacturer.

Materials and Methods Two brands of budget LCUs (LY-A180 and LED-CL) were compared to a control LCU from a major manufacturer (3M). The LCUs were fully charged, and their light outputs were measured over one battery discharge cycle using repeated 10-second exposures at a 0-mm distance.

Statistical Analysis Data were analyzed using one-way analysis of variance and Bonferroni post-hoc test.

Results The budget LCUs delivered fluctuating light output values. In their first exposure, the budget LCUs delivered between 205 and 444 mW power, an irradiance between 533 and 1154 mW/cm2, and a radiant exposure between 5.3 and 11.5 J/cm2. As the number of exposures increased, their light output decreased between 24 and 81%, while the control LCU showed only a 4.9% decrease in power and irradiance. The light outputs from the budget LCUs were significantly less than the control LCU, and they were significantly from each other.

Conclusion The budget LCUs tested could not maintain their power, irradiance, and radiant exposure output values as the battery discharged. This supports the recommendation that clinicians should be very cautious when using budget LCUs in their clinical practice.

Keywords

budget light-curing units - light-curing units - battery discharge - power - irradiance - radiant exposure


Publikationsverlauf

Artikel online veröffentlicht:
01. November 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, 2nd Floor, Sector 2, Noida-201301 UP, India