The interprox plus 90 mini 1.4 interdental brush is a small, specialized toothbrush designed to clean the medium-sized spaces between teeth, particularly in the premolar and molar areas. Its angled handle and head facilitate perpendicular entry into back teeth spaces, while the soft, flexible bristles and bi-color design (white for bleeding points and black for plaque) help effectively remove oral biofilm and indicate gum health. It is recommended for use with implants, crowns, bridges, and orthodontic brackets to help prevent cavities and periodontal disease.