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Diode laser-activated bleaching.
Tatjana Dostalova1, Helena Jelinkova, Devana Housova
1Charles University, 1st Medical Faculty, Department of Prosthodontics, GFH, Prague, Czech Republic. t.dostalova@quick.cz
Brazilian Dental Journal
|February 5, 2005
Summary
Laser activation significantly enhances tooth bleaching with hydrogen peroxide, achieving a 2-3 shade change in just 5 minutes. This advanced method offers a faster, more effective power bleaching solution for dental offices.
Area of Science:
- Dentistry
- Biomaterials
- Laser Technology
Background:
- Tooth discoloration is a common aesthetic concern.
- Traditional bleaching methods often require prolonged treatment times.
- Laser activation offers a potential advancement in bleaching efficacy.
Purpose of the Study:
- To investigate the efficacy of laser-activated bleaching agents for discolored teeth.
- To compare different laser systems and light-emitting diodes for bleaching activation.
- To evaluate the effect of laser bleaching on tooth enamel surface.
Main Methods:
- Preclinical study using extracted human maxillary central incisors.
- Application of 38% hydrogen peroxide bleaching agent.
- Activation using diode laser (970 nm), infrared diode laser (790 nm) with blue LEDs (467 nm).
- Scanning electron microscopy (SEM) for enamel surface evaluation.
Main Results:
- Chemical oxidation achieved a 2-3 shade change in 15 minutes.
- Diode laser (970 nm) activation achieved similar results in 5 minutes (1W) or 2.5 minutes (2W).
- Infrared diode laser (790 nm) with blue LEDs (467 nm) achieved desired shade in 5 minutes (40 mW).
- Slight enamel surface modification was observed via SEM.
Conclusions:
- Laser activation significantly reduces bleaching time compared to traditional methods.
- Diode and infrared diode lasers show promise for efficient power bleaching.
- Laser-activated bleaching is a valuable, time-efficient energy source for dental applications.