There are a few reasons why you might feel like there is something between your teeth.
It could be that there actually is something stuck in your teeth, such as a piece of food or a small object. It is also possible that you are feeling a rough or sharp edge on one of your teeth, or that you are experiencing sensitivity in your teeth due to tooth decay or gum disease.
In some cases, the feeling of something being stuck between your teeth may be caused by an overactive gag reflex, or it may be a psychological sensation that is not based on anything physical.
If you feel like there is something stuck between your teeth, the first thing you should do is try to gently floss or use a toothpick to remove it. Be careful not to damage your gums or teeth while doing this. If you are unable to remove the object using floss or a toothpick, you may need to see a dentist to have it removed.
To prevent this feeling from happening again, make sure to brush and floss your teeth regularly to remove any food debris that may get stuck between your teeth. Avoid eating hard, crunchy, or sticky foods that are more likely to get stuck between your teeth. And if you have a history of gum disease or tooth decay, be sure to see a dentist regularly for checkups and cleanings.