If you experiment with various size interdental brushes (search on Amazon), you will quickly realize that there can be a lot of differences in dental spacing. S

If you experiment with various size interdental brushes (search on Amazon), you will quickly realize that there can be a lot of differences in dental spacing. Some people might mostly have tiny spaces between their teeth, while some have larger spaces, which will collect much more food residue. Leaving that residue in place can cause your gums to bleed pretty fast, which means you will have problems. Moral of the story: get to know your own teeth well and take care of them in the way that's best for you. You might not even realize how much food is constantly stuck between your teeth, if you never used an interdental brush. Flossing is complementary to them.