Gum Proxa brush Go-Betweens cleaners have been clinically designed by dental professionals to remove dental plaque from areas between the teeth most commonly missed by tooth brushing alone.Removes up to 25% more plaque: Our innovative interdental brushes are formatted with triangular bristles which are 25% more effective at removing dental plaque from between teeth than conventional round bristles. Reusable: Coated with a patented agent for continuous protection throughout the 10-day recommended usage period. Protective travel caps included to put in your pocket, purse or car for on-the-go usage.