(A) gelatin capsule And (b) to be contained inside the said capsule, at the same time, the (i) hydrophilic activator (ii) hydrophobic structuration medicine (structuring agent) The buccal cavity CARE composition which and includes the buccal cavity CARE composition which includes the (iii) oil carrier, is encapsulated is offered. The hydrophilic activator desirably is chloridation sechirupirijiniumu. The hydrophobic structuration medicine (structuring agent), desirably it is the gel mineral oil. The oil carrier desirably is the vegetable oil. The capsule discharging the buccal cavity CARE composition, in order to wash the tooth, the fact that the buccal cavity CARE composition which is encapsulated is applied to the tooth is included, it offers also the method the tooth washing. Furthermore, steering wheel Being the head which is installed in the said handle, the washing element of the plural teeth which from external surface and the said external surface have extended to facing outside (cleaning elements) the head which it possesses And it was arranged it offers also the buccal cavity CARE device which includes the buccal cavity CARE composition which is encapsulated on the said head.(a)ゼラチンカプセル;ならびに(b)該カプセル内に含有され、かつ、(i)親水性活性剤;(ii)疎水性構造化剤(structuring agent);および(iii)油担体を含む口腔ケア組成物を含む、カプセル化された口腔ケア組成物を提供する。親水性活性剤は、好ましくは塩化セチルピリジニウムである。疎水性構造化剤(structuring agent)は、好ましくはゲル状鉱油である。油担体は、好ましくは植物油である。カプセルが口腔ケア組成物を放出して歯を洗浄するように、カプセル化された口腔ケア組成物を歯に適用することを含む、歯を洗浄する方法も提供する。さらに、ハンドル;該ハンドルに取り付けられたヘッドであって、外表面および該外表面から外向きに伸びている複数の歯の洗浄要素(cleaning elements)を有するヘッド;ならびに該ヘッド上に配置されたカプセル化された口腔ケア組成物を含む口腔ケア装置も提供する。