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Original scientific paper

Blue Laser Curing of Composites

Andrej Meniga ; Zagreb University School of Dentistry, Croatia
Jozo Šutalo ; Zagreb University School of Dentistry, Croatia
Davorka Azinović ; Institute of Physics, University of Zagreb
Goran Pichler ; Institute of Physics, University of Zagreb


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Abstract

There are two drawbacks o f standard photopolymerization units: relative inability o f a complete cure o f darker composite shades in premolar and molar regions, and a hazardous effect o f curing light on the eyes o f the dentist. A n argon-ion laser was used as a source for photopolymerization o f several light shade composite resins. The depth o f cure was measured at three different wavelengths (457.9 nm, 476.5 nm and 488.0 nm) and in the laser multiline mode. The depth o f cure measurements was determined with a micrometer. The best results were obtained with a 476.5 nm laser line for Silux composite: more than 3.8 mm in 2 seconds at 155 mW. This arrangement is not suitable for clinical use in the present form, but a low-power compact laser device has been proposed to meet practical requirements.

Keywords

composite resins, photopolymerization, laser

Hrčak ID:

100657

URI

https://hrcak.srce.hr/100657

Article data in other languages: croatian

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