It maintains the health of the tooth gu coming, maintains the health of the gum, it maintains the health of the organization which supports the tooth, the tooth lap prevents the illness, it remedies or improves, or, the tooth lap maintains the health of organization, or it offers the medicine which controls the absorption of the alveolus bone. Furthermore, the eating and drinking item which includes the active ingredient which possesses these action and effect, the composition and the medicine composition for the buccal cavity are offered. In detail, as for this invention, the healthy maintenance medicine of the tooth gu coming which at least includes 1 where it is chosen from oreuropein and its disassembly ones kinds, the healthy maintenance medicine of the gum and the healthy maintenance medicine of the organization which supports the tooth, the tooth lap illness prevention/the remedy/improvement medicine, the tooth lap the organizational healthy maintenance medicine and the alveolus bone absorption inhibiter, and the eating and drinking item which includes those, it regards the composition and the medicine composition for the buccal cavity.歯ぐきの健康を維持し、歯肉の健康を維持し、歯を支える組織の健康を維持し、歯周病を予防、治療または改善し、歯周組織の健康を維持し、または歯槽骨の吸収を抑制する剤を提供する。更には、これらの作用効果を有する有効成分を含む飲食品、口腔用組成物および医薬組成物を提供する。詳細には、本発明は、オレウロペインおよびその分解物から選ばれる少なくとも1種を含む歯ぐきの健康維持剤、歯肉の健康維持剤、歯を支える組織の健康維持剤、歯周病予防/治療/改善剤、歯周組織健康維持剤および歯槽骨吸収抑制剤、ならびにそれらを含む飲食品、口腔用組成物および医薬組成物に関する。
