PROBLEM TO BE SOLVED: To obtain a denture cleanser capable of effectively removing plaques and tartars adhered to a denture, especially the tartar, by cleaning.SOLUTION: This denture cleanser is a liquid denture-cleaning agent having pH 2.5-5 and the aforesaid liquid denturecleaning agent especially containing a surfactant is used. As the surfactant, a nonionic surfactant or a cationic surfactant is preferable.COPYRIGHT: (C)2002,JPO(修正有)【課題】義歯に付着した汚垢並びに歯石、特に歯石を効果的に洗浄除去できる義歯洗浄剤を提供する。【解決手段】pH2.5~5を有する液体義歯洗浄剤、特に界面活性剤を含む請求項1記載の液体義歯洗浄剤を用いる。界面活性剤としては非イオン性界面活性剤またはカチオン性界面活性剤が好ましい。