Yellow teeth can be brushed white if it is caused by soft tartar, yellow teeth caused by calculus, caries, fluorosis, etc. can not be brushed white, can only be scaled, fillings, whitening or veneer restorations, etc. whitening, it is recommended to go to the dentist for examination and treatment. Food, bacteria, etc. formed around the teeth can be brushed off with a little force to whiten the teeth. If the plaque has been mineralized to form yellow dental calculus, the texture is relatively hard, can not be brushed off, can only be removed by scaling. If the yellow teeth are caused by caries, it is necessary to remove the corroded part and then fill and repair the teeth. Fluorosis or tetracycline teeth need to do cold light whitening or dental veneers, full crowns, etc. to achieve whitening results.