Curaprox has developed ultrafine interdental brushes that fit into each interdental space. A brush that fails to fill the space can only do its job badly, or not at all. Success is guaranteed when the interdental brush effectively cleans the whole space with long, soft filaments that remove the plaque but do not damage the gums. It's all in the quality of the design! Only Curaprox brushes are made of nickel free CURAL surgical wire offering extreme durability with the thinnest of cores. This high-yield surgical grade alloy will last much longer than other brushes on the market as it can withstand far more bending to and fro, inherent in the use of interdental brushes.