Further contains (c) a cationic bactericidal agent (b) and salts thereof, there is provided a dental composition for oral use phosphorylated saccharide (a), and polyphosphoric acid, and / or polyphosphoric acid (a) and phosphorylated saccharide / or 0.05 to 20 (weight ratio) and the ratio of the total salt content of the (b), the content of the cationic bactericidal agent (c) is [{(a) + (b)} / (c)] is, dental composition for oral use. Dentifrices such as toothpaste, dentifrice powder and liquid dentifrices, mouthwashes, lozenges, tablets, creams, ointments, adhesive preparations, mouth spray, dental oral composition of the present invention, the tooth surface and suitable for such oral detergents periodontal disease therapeutic agent coating agent to the dental prosthesis and, hyperesthesia inhibitor, is applied to the periodontal pocket, such as mouthwash oral care for wet tissue, mouth fresheners, or chewing gum, It is intended to be usable for.リン酸化糖(a)、ポリリン酸及び/又はその塩(b)ならびにカチオン性殺菌剤(c)を含有してなる、歯科口腔用組成物であって、リン酸化糖(a)とポリリン酸及び/又はその塩(b)の合計含有量と、カチオン性殺菌剤(c)の含有量の比[{(a)+(b)}/(c)]が0.05~20(重量比)である、歯科口腔用組成物。本発明の歯科口腔用組成物は、練歯磨剤、粉歯磨剤、液状歯磨剤などの歯磨剤類、洗口剤、トローチ剤、錠剤、クリーム剤、軟膏剤、貼付剤、マウススプレー、歯面や歯科用補綴物へのコーティング剤、知覚過敏抑制剤、歯周ポケットに塗布する歯周病治療剤、口腔ケア用ウェットティッシュ、口中清涼剤、チューインガム、又はうがい液などの口腔清浄剤などに好適に使用しうるものである。