To provide periodontal disease prevention oral compositions exerting unprecedented novel and remarkable effectiveness while comprehensively examining from various directions and adjusting aesthetics, not only from the viewpoint of controlling oral bacteria as the cause of oral trouble associated with unsanitary or aging, such as caries, periodontal disease, gingivitis, halitosis, dry mouth.SOLUTION: Provided is a periodontal disease prevention oral composition in which at least two selected from oral bacterial inhibitors containing as active ingredients Paeonia lactiflora extract, Hypericum erectum extract, Humulus lupulus extract, and Betula extract, as well as further at least one plant extract selected from Hamamelis virginiana extract, Chamomile extract, Aloe vera extract, and Calendula officinalis extract, as an oral bacteria inhibitor that has a characteristic inhibitory effect respectively against Porphyromonas gingivalis and Fusobacterium nucleatum which are the main causes of periodontal disease.SELECTED DRAWING: None【課題】不衛生もしくは、加齢等に伴う、う蝕、歯周病、歯肉炎、口臭、口渇（ドライマウス）等の口腔トラブルの原因を口腔細菌の抑制とする観点のみならず、多方面から総合的に検討し、審美性を整えるとともに、従来にない新規で顕著な有効性を示す歯周病予防口腔用組成物を提供する。【解決手段】歯周病の主な原因となるポルフィロモナス・ジンジバリス（Porphylomonas gingivalis）、フソバクテリウム・ ヌクレアタム（Fusobacterium nucleatum）に対して、それぞれ特徴的に抑制効果を有する口腔細菌抑制剤として、シャクヤク抽出物，オトギリソウ抽出物，ホップ抽出物，バーチ抽出物を有効成分とする口腔細菌抑制剤から選ばれる少なくとも２種と、さらにハマメリス抽出物，カモミラ抽出物，アロエベラ抽出物，トウキンセンカ抽出物から選択される植物抽出物の少なくとも１種以上の植物抽出物を配合した歯周病予防口腔用組成物。【選択図】なし
