University of Missouri scientists have invented this painless and plasma complement toothbrush. This toothbrush is a good clean tooth decay, disinfection and sterilization, it also can make use of the substance formed by chemical reactions better integration of dental materials and teeth. The high efficiency of this painless dental tools, just a short period of 30 seconds or so to complete the process of filling of dental materials, and the fill strength by 60%, greatly extend the service life of dental materials.