Curaprox CS 5460 ultrasoft toothbrush
 
A small head with compactly filled fibers can reach even hard-to-reach places.
The number on the CURAPROX brush indicates the number of fibers the brush contains. The fibers are fine and thin, made of a special CUREN material, which retains its strength even when wet, and absorbs 6x less water. The fibers are thin and fine enough to reach the sulcus between the gums and the teeth, without injuring the gums. CURAPROX Ultra soft brush has 5460 fibers, even 10x more than the densest brush on the market.