The device where execution form of this invention copes with the fault of the particular technology regarding the delivery of the tooth polishing powder, delivers the tooth polishing powder to the user and being new is progressive characteristic, method and the system are offered. With one execution form of this invention, it is possible to offer the drop which delivers the tooth polishing powder to the user. This drop stipulates capacity, can possess the exine of the solubility which possesses the tooth polishing powder within that capacity. The exine, in order to come in contact with the hair of the toothbrush, can possess the tail which is formed. This drop furthermore has the extended section of 1 or more where it is connected to the outside of the exine, the extended section of 1 or more triangle, can possess form or the kind the form. With one feature of this execution form, as for the drop furthermore, the character of logograph and the animation which are printed to the exine, composition or it can possess those of the kind.< Selective figure >Figure 4本発明の実施形態は、歯磨き粉の送達に関する当該技術の欠点に対処し、ユーザに歯磨き粉を送達する新しくて進歩性があるデバイス、方法およびシステムを提供している。本発明の一実施形態では、ユーザに歯磨き粉を送達する小滴を提供することができる。この小滴は、容積を規定し、その容積内に歯磨き粉を有する可溶性の外膜を有しうる。外膜は、歯ブラシの毛に付着するよう構成された尾部を有しうる。この小滴はさらに外膜の外面に結合された1以上の拡張部を有し、1以上の拡張部は三角形、棘形状またはその種の形状を有しうる。この実施形態の一態様では、小滴はさらに、外膜に印刷されたロゴ、アニメのキャラクタ、文章またはその種のものを有しうる。【選択図】図4