PROBLEM TO BE SOLVED: To provide a treatment apparatus for completely curing a periodontal disease by using light scattering quality and disinfecting power of an UV ray.SOLUTION: In the treatment apparatus, an UV ray is guided from the light emission source of an UV ray to an irradiation part through the use of an optical fiber. Then, a region within a narrow range in a mouth is irradiated with the UV ray.COPYRIGHT: (C)2013,JPO&INPIT【課題】紫外線の光の散乱する性質と殺菌力を利用して、歯周病を根治する治療装置を提供する。【解決手段】紫外線の発光源から光ファイバーによって紫外線を照射部まで導き、紫外線を口腔内の狭い範囲の部位に照射可能にしたことを特徴とする、治療装置。【選択図】なし