I recommend disposable interdental brushes.

This is a disposable interdental brush I purchased at E-mart. One end is shaped like a pointed toothpick, and the other is shaped like an interdental brush, making it a convenient product to carry around. The pointed end is effective for removing food particles stuck between teeth, and using this disposable brush allows you to keep your gums clean. If you use this product first before brushing, you can maintain fresh and clean teeth!