CiNii Fulltext PDF
Recently, sedative and antiphlogistic treatment is conducted with low energy laser irradiation. The purpose of the this study was to evaluate the effectiveness to decrease of pain just after irradiation by a GaAlAs semiconductor laser. The irradiation apparatus was SEMI LASER NANOX (LX-800 : G-C. Co.) with the following features : a wave lengh of (around) 780nm : the laser energy, 30mW ; exposure time, SOsec to ISOsec/ per treatment. Diagnosis of pre-and post-operative sensitivity were classified into the following four grades : Grade 0 no pain. Grade I mild pain. Grade II strong but tolerable pain. Grade III intolerable pain (simultaneous with stimulation). The results were as follows: 1. In the hypersensitivity of dentin, the treatment was not effective with 2 cases of grade III, but with all of grade I , II (35 cases) the pain decreased just after irradiation. 2 . It was effective in all cases with pain like periodontitis after root canal filling and pain after extraction of teeth. 3 . It was effective in all cases with gingivitis, stomatitis, and gingival ulcers after infilttation anesthesia etc..