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Volume 18 , Issue 5
September/October 2005

Pages 434435

Intensity of Quartz-Tungsten-Halogen Light Polymerization Units Used in Dental Offices in Brazil

Gildo Coelho Santos Jr, DDS, MSc, PhD/Maria Jacinta Moraes Coelho Santos, DDS, MSc, PhD/Omar El-Mowafy, BDS, PhD, FADM/Wafa El-Badrawy, BDS, MSc

PMID: 16220811

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.
Int J Prosthodont 2005;18:434435.

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