Interprox plus 90 mix is a set of six interdental brushes designed for cleaning between teeth, around orthodontic appliances, implants, and under bridges. The "Mix" refers to a pack containing a variety of sizes, while "Plus" indicates features like a 90° angled handle, a plastic-coated stainless steel wire, and high-quality tynex bristles for effective cleaning without damaging gums or teeth. These brushes are intended to remove plaque and help prevent cavities and gum disease, with the angled handle allowing for easier access to hard-to-reach areas.