The secret of all our toothbrushes – for children or adults, specialist or CS – is in the bristles: our toothbrushes do not use nylon bristles but filaments made of CUREN®, which are incredibly gentle and fine.What is more, we can line up a lot (and that means a lot) of these filaments on the head of our brush. In total on a CS 5460 ultra soft toothbrush there are 5,460 individual 0.1 mm-fine filaments making it really an ultra soft brush. The result is an unparalleled cleaning surface on an ultracompact brush head – making all parts of the mouth easy to reach.