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  • Title: Intensity of quartz-tungsten-halogen light polymerization units used in dental offices in Brazil.
    Author: Santos GC, Santos MJ, El-Mowafy O, El-Badrawy W.
    Journal: Int J Prosthodont; 2005; 18(5):434-5. PubMed ID: 16220811.
    Abstract:
    PURPOSE: To determine the intensity of quartz-tungsten-halogen light polymerization units in dental offices in El Salvador, Brazil. MATERIALS AND METHODS: A team of researchers visited 100 offices in 2003. The team measured light intensity with a radiometer. The age and make of the units and the availability of light meters were recorded. RESULTS: One hundred twenty quartz-tungsten-halogen units were tested. Intensity ranged from 10 to 1,000 mW/cm2, with mean of 255.8 mW/cm2. Almost half (48%) of the units had values equal to or less than 200 mW/cm2. Their age ranged from 1 to 21 years. None of the offices had light meters. CONCLUSIONS: Clinicians should periodically monitor light intensity and carry out maintenance on their light polymerization units.
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