PROBLEM TO BE SOLVED: To provide a preventive agent for tooth root surface caries which inhibits dentin collagen degradation in the caries generated in the dentin of a tooth root surface, further suppresses mineral elution (decalcification) of the dentin, and promotes remineralization, and to provide an oral cavity composition including the same.SOLUTION: The invention provides a local area liniment to a tooth root surface for preventing/improving root surface caries containing a preventive agent for root surface caries consisting of flavanones and/or a glycoside thereof, particularly preferably hesperidin and/or a hesperidin sugar adduct. The invention also provides a local area liniment to a tooth root surface for preventing/improving root surface caries containing the preventive agent for root surface caries, which is filled in a pen type applicator for oral cavity compositions.COPYRIGHT: (C)2015,JPO&INPIT【課題】歯根面の象牙質に発生するう蝕における象牙質のコラーゲン分解を阻害し、更に象牙質のミネラル溶出(脱灰)を抑制し、かつ再石灰化を促進する歯根面う蝕予防剤及びこれを含む口腔用組成物の提供。【解決手段】フラバノン類及び/又はその配糖体、特に好ましくはヘスペリジン及び/又はヘスペリジン糖付加物からなる歯根面う蝕予防剤を配合した歯根面う蝕予防・改善用の歯根面局部塗布剤。前記歯根面う蝕予防剤を配合させて口腔用組成物ペン型アプリケーターに充填されている歯根面う蝕予防・改善用の歯根面局部塗布剤。【選択図】なし
