5 知覚過敏症罹患モデル象牙質へのレーザー照射が透過性に与える影響について(第511回 大阪歯科学会例会)

抄録

We evaluated the effect of laser irradiation on dentin permeability using an in vitro model of hypersensitive dentin. The lasers used in the experiment were the Erwin AdvErl^[○!R], which is an Er: YAG laser, and the Panalas^[○!R]C 05 Σ, which is a CO_2 laser. Forty dentin discs were prepared from extracted bovine anterior teeth for use as hypersensitivity model samples. The samples were applied to a device made by modifying the one reported by Pashley, with the pulpal pressure fixed at 25 mm Hg. Dentin permeability was measured when the sample surface was irradiated with each laser at a distance of 0 or 1 mm. Statistical analysis was performed by one-way analysis of variance and Scheffes method. We found that laser irradiation decreased dentin permeability, suggesting its efficacy for the treatment of dentin hypersensitivity.