Abstract
Background: Success rate in composite restorations is associated with the degree of polymerization and light intensity.
Objectives: The aim of this study was to evaluate the light intensity of curing units in private offices in Qazvin 2003.
Methods: In this analytical study the light intensity of 62 light curing units were investigated before and after cleaning their light emitting tips using a radiometer. The results were classified in 3 groups as follows: A: sufficient intensity> 300 mw/cm2, B: borderline intensity (200-299 mw/cm2), and C: insufficient intensity<200 mw/cm2. Data were analyzed using chi-square and Pearson correlation tests.
Findings: Mean intensity of curing units was 350.96mw/cm2 which increased significantly to 371.6mw/cm2 (p=0.01). Before cleaning, 67.8% of curing tips were in group A, 14.5% in B and 17.7% in C. After cleaning, 72.6% were in sufficient intensity group, 11.3% in borderline intensity, and 14.1% in insufficient intensity. Removing curing tips' contamination caused a significant increase in light intensity (p=0.01).
Conclusion: Periodic assessment of light intensity and quality control of light curing units are mandatory.
Keywords
Keywords: Curing units Radiography Dental Equipment Dentistry Dentals offices Composites
Copyright
© 2024, Journal of Inflammatory Diseases. This open-access article is available under the Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0) International License (https://creativecommons.org/licenses/by-nc/4.0/), which allows for the copying and redistribution of the material only for noncommercial purposes, provided that the original work is properly cited.