PROBLEM TO BE SOLVED: To provide a tooth cleaning device that reduces irritation to mucosa by dental antiseptic and hardly generates cutting of the mucosa in oral cavity.SOLUTION: The tooth cleaning device for cleaning a tooth includes: a bubble generating means for vibrating or flowing gas-supersaturated water 6 in which gas more than saturated dissolved amount is dissolved so that pressure fluctuation is generated to generate bubbles in the gas-supersaturated water by the pressure fluctuation and generate a cleaning liquid containing the bubbles from the gas-supersaturated water wherein the cleaning liquid is applied to a cleaning part of the tooth.COPYRIGHT: (C)2013,JPO&INPIT【課題】歯科用消毒薬による粘膜への刺激を低減でき、口腔内の粘膜の切傷を生じにくい歯洗浄装置を提供する。【解決手段】歯を洗浄するための歯洗浄装置であって、飽和溶解量以上の気体が溶存する気体過飽和水6に圧力変動が生じるように振動又は流動させ、その圧力変動により前記気体過飽和水中に気泡を発生させて前記気体過飽和水から気泡を含む洗浄液を生成する気泡発生手段を備え、前記洗浄液を前記歯の洗浄部位に適用する。【選択図】図1