The invention provides a toothbrush that has superfine fibers which enable pressure to be applied evenly to teeth and gums, and that makes it possible to kill periodontal disease bacteria more reliably using platinum nanoparticles. This toothbrush has a toothbrush body which comprises a head portion and a handle portion connected thereto, and which includes a top surface and a bottom surface. The head portion has a fiber group unit on a top surface thereof, the fiber group unit constituted of a group of a plurality of evenly planted fibers having a diameter of less than 0.1 mm. The toothbrush is characterized in that each of the fibers constituting the fiber group unit is provided with a plurality of platinum nanoparticles having nano-sized particle diameters.本發明所揭示的是把每根纖維製成極細毛，對於牙齒及牙齦可均勻地按壓服貼，透過白金奈米粒子可確實提供殺滅牙周病細菌的牙刷。根據本發明的牙刷、牙刷本體包括刷頭部及被連接於刷頭部的手柄部分，且具有上面及下面在該刷頭部上面均勻地植入複數直徑0.1mm 以下的纖維，配製成組的纖維組套的一種牙刷，其中構成前述纖維組套的每根纖維都具有複數奈米尺寸粒徑的白金奈米粒子。
