GUM Soft-Picks Original – Easy-to-Use Interdental Picks for Plaque Removal & Gum Health with Convenient Carry Case, Dentist Recommended, 270 Count

Rinsing really helps, but you also want to use a pick between your teeth so as not to trap any cavity-producing foods. I use GUM Soft-Picks, https://www.amazon.com/dp/B073C6LMJD?th=1 after every meal, then rinse with water. If you're really concerned about cavities, you can use an ultra soft toothbrush, such as Nimbus, with plain water or a little baking soda and brush lightly. Baking soda is very gentle on enamel and because it's alkaline, has anti-microbial properties. Good luck!