I'm wondering how long do you wait to rinse with salt water after tooth extraction?

Rinse: Rinsing often cause the blood clots to be lost, which then causes dry socket. So rinse with extreme caution. It is often better not to rinse at least until the blood clot forms nicely. This will take about 24-48 hours. If you are on a certain medication, this may take longer. Once you see the clotted blood, you may rinse, but please be careful not to spit much, and just let the water drain out.