It depends how you had them out - was it under general anthestic in a hospital or just at the dentists?
Once you have had them removed, you need to be careful not to eat really hot or really cold foods for a couple of days. You need to keep the wound clean (rinse you mouth with warm salted water four times a day) and try not to chew any food with that part of your mouth.
The wound will feel tender for a week, and the gap will close over within two months.
If you go to hospital, you should take the following day off from work as you may be a little dozey. You will have some swelling around the area which should go away within a couple of days.
It all depends on how tough was the surgery.
After a very tough surgery, a patient can feel discomfort for one or two weeks. But if there was no complications, the patient can feel comfortable with no pain as soon as the next day.