After a tooth extraction, how long do i have to wait before i can stop rinsing my mouth with salt water?

Check with your dent: Check with your dentist. He or she knows your situation best. A simple phone call should give you the answer.

Varies: Post operative care for extractions vary based on the specifics of the treatment. Some extractions (simple) require very little post operative care while others (complex) may require post operative care to extend over a longer period of time. It would be best for you to discus this question with the surgeon that performed the procedure to tailor the post operative care to your treatment.