OPTIM by Stoddard Interdental Brushes is specially designed to clean thoroughly in the wider spaces between teeth and around bridges and braces. They are manufactured using only the highest specification materials. High tensile strength, plastic coated, stainless steel wire at the core prevents the brushes from buckling. For longer life, the bristles are made from the same memory-retentive nylon as used for toothbrushes. The brush is locked to the handle using a revolutionary production process making it virtually impossible for them to separate.