360 Degree Toothbrush, Dental Sigma
“Dental Sigma” is the name of a new toothbrush from Vivatec of Japan, sporting toilet bowl brush-like round cleaning head. Each bristle of the brush has a diameter between 0.09 and 0.13mm, so between this and the 360 degree head, you have a total of over 10,000 bristles (more than 10x that of a normal…