Gen Dent. 2023 Mar-Apr;71(2):59-63.
The purpose of this study was to compare the performances of 5 different instruments in measuring the irradiance of light-curing units (LCUs). A novel spectrometer-trained radiometer (CheckUp), 2 conventional chairside radiometers (Bluephase Meter I and Bluephase Meter II), and 2 devices considered to be gold standards for measuring irradiance (an integrating sphere spectrometer and a thermopile sensor) were used to evaluate 7 LCUs. The irradiance of each LCU was measured 10 times with each meter. Data were analyzed using linear regression analysis and a 1-way analysis of variance with Tukey post hoc test (α = 0.05). The mean irradiance values of the LCUs differed significantly depending on which meter was used for measurement (P < 0.05). Bivariate regression analysis demonstrated that the highest correlations in the irradiance values were found between the CheckUp meter and both the integrating sphere (r = 0.980) and the thermopile (r = 0.933). The absolute mean (SD) percentage deviation between irradiance measured by the CheckUp instrument and irradiance measured by the other meters was 7.2% (2.0%) for the integrating sphere, 7.0% (3.6%) for the thermopile, 21.5% (16.1%) for Bluephase Meter I, and 13.1% (7.1%) for Bluephase Meter II. Compared with the 2 conventional chairside radiometers, the CheckUp meter provided the highest correlation with and lowest absolute percentage deviation from the irradiance measured by the gold standard spectrometers.
本研究旨在比较 5 种不同仪器在测量光固化仪（LCU）辐照度方面的性能。使用一种新型光谱仪校准辐射计（CheckUp）、2 种传统的椅旁辐射计（Bluephase Meter I 和 Bluephase Meter II）以及 2 种被认为是测量辐照度的金标准设备（积分球光谱仪和热电堆传感器）来评估 7 种 LCU。每种辐射计的辐照度用每种仪表测量 10 次。使用线性回归分析和单向方差分析（Tukey 事后检验，α = 0.05）对数据进行分析。使用不同仪表进行测量时，LCU 的辐照度均值差异有统计学意义（P < 0.05）。双变量回归分析显示，CheckUp 仪表与积分球（r = 0.980）和热电堆（r = 0.933）的辐照度值相关性最高。CheckUp 仪器测量的辐照度与其他仪表测量的辐照度之间的绝对平均（SD）百分比偏差为：积分球为 7.2%（2.0%），热电堆为 7.0%（3.6%），Bluephase Meter I 为 21.5%（16.1%），Bluephase Meter II 为 13.1%（7.1%）。与 2 种传统的椅旁辐射计相比，CheckUp 仪表与金标准光谱仪测量的辐照度相关性最高，绝对百分比偏差最小。
