Final answer:
The Perio-aid is the interdental cleaning aid that can be used in hard-to-reach areas where gingival recession is present. It is a specialized tool that can clean between the teeth and along the gum line.
Step-by-step explanation:
The interdental cleaning aid that can be used in hard-to-reach areas where gingival recession is present is the Perio-aid. The Perio-aid is a specialized tool that is designed to clean between the teeth and along the gum line. It has a thin and flexible tip that can easily reach areas that are difficult to access with traditional floss or interdental brushes.