How long is the recovery time after wisdom teeth removal?

It depends how you had them out - was it under general atheistic 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 doze. You will have some swelling around the area which should go away within a couple of days.