YAGレーザーの歯牙硬組織への影響と口腔領域への臨床応用に関する考察

概要

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Maiman succeeded in the oscillation of the ruby laser in 1960. Since then several types of lasers have been developed and tried to be clinically applied to the oral area over a half century. Lasers have been used for various clinical practices: diagnosis and prevention of dental caries, treatment for periodontal disease, hypersensitive dentin, relieving pain, and root canal infections. The convenience and effectiveness of lasers are highly evaluated and its importance has been recently increasing more and more in clinical situations. Painless cutting of hard tissues has been a longtime dream in dental treatment, and the laser has a higher possibility to realize the dream than the conventional air turbine. However, there are many differences in microstructure and morphology between the cutting surface by an air turbine and a laser. It is also pointed out that there are various problems in the influence on the tooth pulp tissue and on the bonding of the composite resin. In this review, we explain mainly the effects of the Nd: YAG and Er: YAG lasers irradiation on the microstructure of tooth hard tissue and on the response of pulp tissue. We also propose a guideline for the clinical usage of the laser.
2010-09-30