Check the listing for details. GUM Proxabrush Go Betweens Wide Dental Brush Refills 8 Count Pack of 6. Color: Blue, Condition: New, Made in United States. Listed at 23.90 USD. GUM PROXABRUSH REFILLS : Our dental brush refills are compatible with the GUM permanent handle and the GUM dual-ended-handle. PERFECT FOR BRACES & APPLIANCES : Our floss brushes are clinically designed with nylon-coated wire that comfortably cleans around braces, fixtures, implants, and other dental devices without causing scratching or galvanic shock.GUM PROXABRUSH REFILLS : Our dental brush refills are compatible with the GUM permanent handle and the GUM dual-ended-handle. PERFECT FOR BRACES & APPLIANCES : Our floss brushes are clinically designed with nylon-coated wire that comfortably cleans around braces, fixtures, implants, and other dental devices without causing scratching or galvanic shock.