Dental composite depth of cure with halogen and blue light emitting diode technology
Dental composite depth of cure with halogen and blue light emitting diode technology
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DOI：
10.1038/sj.bdj.4800120a
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发表时间：
1999-04-24
影响因子：
2.6
通讯作者：
Ashworth, SH
中科院分区：
文献类型：
--
作者：
Mills, RW;Jandt, KD;Ashworth, SH
ObjectiveTo test the hypothesis that a blue light emitting diode（LED）light curing unit（LCU）can produce a equal dental composite depth of cure to a half mold LCU adjusted to give a irradiance of 300 mW cm（-2）and to smooth the LCU's light outputs. Materials and methods Depth of cure for three popular：composites was determined using a photometer.使用Student t检验分析固化深度结果。结果LCU的光谱分布差异很大。当从科学功率计测量值计算时，LED和卤素LCU的辐照度分别为290 mW cm（-2）和455 mW cm（-2）。LED LCU固化所有三种牙科复合材料的深度显著大于（P <0.05）：卤素LCU.Conclusions LED LCU的辐照度为64%的卤素LCU实现了显着：更大的固化深度。除了作为性能指标的辐照度之外，还应考虑LCU发射光的光谱分布。LED LCU可能具有在牙科实践中使用的潜力，因为它们的性能不会像传统卤素LCU那样随时间显著降低。
Objectives To test the hypothesis that a blue light emitting diode (LED) light curing unit (LCU) can produce an equal dental composite depth of cure to a halogen LCU adjusted to give an irradiance of 300 mW cm(-2) and to characterise the LCU's light outputs.Materials and methods Depth of cure for three popular : composites was determined using a penetrometer. The Student's t test was used to analyse the depth of cure results. A power meter and a spectrometer measured the light output.Results The spectral distribution of the LCUs differed strongly. The irradiance for the LED and halogen LCUs were 290 mW cm(-2) and 455 mW cm(-2),when calculated from the scientific power meter measurements. The LED LCU cured all three dental composites to a;significantly greater (P< 0.05) depth than the : halogen LCU.Conclusions An LED LCU with an irradiance 64% of a halogen LCU-achieved a significantly:greater depth of cure. The LCU's spectral distribution of emitted light should be considered in addition to irradiance as a performance indicator LED LCUs may have a potential for use in dental practice because their performance does not significantly reduce with time as do conventional halogen LCUs.