Normally, how long would the wisdom teeth extraction usually take?

Depends: Ask your surgeon – the actually surgery time (after the preoperative procedures) could be anywhere from 15 minutes to a couple of hours.

Depends: The procedure may depend on the position of the teeth, how many are removed, type of anesthesia or sedation provided, where your surgery is performed, as well as the technique and experience of the dentist or surgeon performing your surgery.