This mixed bag is ideal for first time users or if you simply require a range of different sizes designed to clean between the teeth around bridges fixed appliances and dental implant abutments the metal wire is plastic coated for use around metal fillings and to avoid damage to dental implants regular use reduces the build up of plaque and food debris that can lead to gum disease bad breath and tooth decay 1 pack with 8 brushes of different sizes plastic covered metal wire to mak