Irradiance of Light-Curing Units using a Novel Chairside Spectrometer-Trained System
Abstract
The quality of resin-based restorations is greatly influenced by the light-curing unit (LCU). BlueLight Analytics (Halifax, Canada) recently introduced CheckUP, a dental radiometer trained using an ISO 10650:2018 compliant integrating sphere and spectrometer. Objectives: The focus of this study was to compare the irradiance of 7 LCUs using the novel CheckUP system to the two gold standards; integrating sphere based spectrophotometer (LabSphere) and thermopile (Ophir) and two chairside radiometers (Bluephase Meter I, Bluephase Meter II, Ivoclar Vivadent). Methods and Materials: The irradiances of 7 different LCUs were measured 10 times with each system. Data were analyzed with linear regression and ANOVAs/Tukeys (alpha=0.05). Results: Significant differences in mean irradiance were found between the five meters depending on LCU (p<0.05). Bivariate regression analysis demonstrated that their radiances correlated better between the CheckUP and the integrating sphere (r^2=0.980) or the thermopile (r^2=0.933) than between the Bluephase Meter I (BM I) radiometer and the integrating sphere (r^2=0.387) or the thermopile (r^2=0.189), or between the Bluephase Meter II (BM II) and the integrating sphere (r^2=0.493) or the thermopile (r^2=0.585). The absolute mean percent difference from the CheckUP was 7.2 +/- 2.0 percent (integrating sphere), 7.0 +/- 3.6 percent (thermopile), 21.5 +/- 16.1 percent (BM1), and 13.1 +/- 7.1 percent (BMII). Conclusion: The new chairside spectrometer system (CheckUP) provided the best correlation and the lowest overall percent deviation in irradiance from the integrating sphere and the thermopile compared to other radiometers tested.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 2022
- Accession Number
- AD1174262
Entities
People
- Douglas C Holmes
Organizations
- 59th Medical Wing