Leonard D L, Charlton D G, Hilton T J
USAF Dental Investigations Service, Brooks AFB, TX 78235-5117, USA.
Oper Dent. 1999 Jan-Feb;24(1):31-7.
The purpose of this study was to determine the accuracy of four commercially available radiometers when curing tips of different diameters were used. A visible-light curing unit (Optilux 500) with a new 80-watt quartz-halogen bulb (OptiBulb) was used as the light source for all measurements. The unit's irradiance value was measured using three hand-held radiometers (Demetron model #100, Cure-Rite model #644726, and Coltolux Light Meter) and a built-in visible-light curing unit radiometer (Optilux 500). Measurements were made with four curing tips of diameters 4 mm, 7.5 mm, 10.5 mm, and 12 mm. For each tip, trials were made with five radiometers of each model. Student's t-tests at the 0.05 level of significance were used to compare the mean irradiance measured by each model of radiometer, to the irradiance value measured by a laboratory-grade power meter. A one-way analysis of variance at the 0.05 level of significance was used to compare the irradiance values among the five samples of each commercially available radiometer model. Except for the Optilux 500 built-in radiometer with the 10.5-mm tip, all the commercially available radiometers exhibited irradiance values significantly different from those of the laboratory-grade power meter. There were no statistically significant differences among the five samples of each commercially available radiometer model.
本研究的目的是确定使用不同直径的固化头时，四种市售辐射计的准确性。使用配备新型80瓦石英卤素灯（OptiBulb）的可见光固化机（Optilux 500）作为所有测量的光源。使用三种手持式辐射计（Demetron型号#100、Cure-Rite型号#644726和Coltolux光度计）以及可见光固化机内置辐射计（Optilux 500）测量该设备的辐照度值。使用直径为4毫米、7.5毫米、10.5毫米和12毫米的四种固化头进行测量。对于每个固化头，每种型号的五个辐射计都进行了测试。使用显著性水平为0.05的学生t检验，将每种型号辐射计测量的平均辐照度与实验室级功率计测量的辐照度值进行比较。使用显著性水平为0.05的单向方差分析，比较每种市售辐射计型号的五个样本之间的辐照度值。除了配备10.5毫米固化头的Optilux 500内置辐射计外，所有市售辐射计的辐照度值与实验室级功率计的辐照度值均存在显著差异。每种市售辐射计型号的五个样本之间没有统计学上的显著差异。
