Tepe Interdental Brush - 0.45mm Size 1 Orange (6). A special brush by TePe designed to clean even the smallest gaps between your teeth where a regular toothbrush is unable to reach, giving your gums and teeth a fresh and clean feeling - every day. TePe Interdental Brushes come in a range of sizes, designs and filament types. The updated colour scheme is based on ISO-certificated standards and allows quick identification of the perfect brush size.. Daily use can remove 40% more plaque than through brushing alone. Effective plaque control with the help of TePe brushes can prevent tooth decay/cavities, bleeding caused by gum disease and bad breath.