PROBLEM TO BE SOLVED: To solve a problem in which as the reason why dental calculus and dental plaque cannot be easily removed, in an abrasive of a toothpaste, there contain overwhelmingly many alkaline main agents such as hydroxide salts (sodium hydroxide, kalium, and magnesium salts), and phosphoric salts, and it is very difficult to remove tar of alkaline components, dental plaque or dental calculus.SOLUTION: As a result of examining that dental plaque, tar or stain (yellowing) which can hardly be removed by conventional alkaline tooth pastes, can be removed in treatment with a strong acid, and without affecting teeth by any acids, but can be removed without irritating tang or gum, when the concentration of a malic acid used for juice or the like is made to be ph3 or less, the dental plaque, the tar or the stain can be easily removed. However, the strong acid or irritation cannot be endured in a mouth, and therefore glycerin, sweeteners (sorbitol, xylitol or the like) or perfume is added, and the characteristics of malic acid of ph3 or less and ph1.8 or more can be brought out by a compound giving no feel of strong acid taste or acridity.COPYRIGHT: (C)2013,JPO&INPIT【課題】歯石や歯垢を簡単に除去できないのは歯磨き粉の研磨剤が水酸化塩(水酸化ナトリウム、カリウム、マグネシウム塩)リン酸塩などアルカリ性を主剤とするものが圧倒的に多く、アルカリ成分のヤニ、歯垢や歯石を取り除き難い面があった。【解決手段】強酸で処理すると歯がやられ、どのような酸では歯を犯すことなく、アルカリ性の従来の歯磨き剤で落ち難かった歯垢やヤニやステイン(黄ばみ)を除去できるが舌や歯肉の刺激もなく除去できるかと検討した結果、ジュースなどにも使われるリンゴ酸の濃度をph3以下にすると簡単に歯垢やヤニ、ステインが簡単に除去できるようになった。ただ口の中では強い酸味や刺激は耐えられないので、グリセリンや甘味料(ソルビト-ル、キシリトールなど)、香料を加味して、強い酸味や、刺激性を感じさせない配合で、リンゴ酸ph3以下ph1.8以上の特性を引き出せるようにした。【選択図】図1
