Could you tell me what happens before and after wisdom teeth surgery?

Wisdom tooth surgery: I'm not sure what you are asking about "before", but wisdom teeth surgery is simply the removal of these (usually 4) teeth that developmentally are supposed to erupt at about age 21 (hence "wisdom teeth"). Depending on their position, the extractions could be simple or very complex if impacted (below bone). In this case, they may be sectioned for removal.

Depends: What occurs before and after your surgery may be dependent upon who performs your surgery, whether you are sedated, as well as where your surgery is performed (office vs hospital). Your dentist or surgeon performing your surgery can provide you with the specific information you are looking for.