After you have your wisdom teeth pulled is it normal for something white to be in the hole?
It could either be some food stuck in the hole, or it can be the blood cloth that is forming. If it was infected, you would see white pus coming out of it.
Full recovery should take three months and you would feel the holes for a few weeks.
1 week after my extraction I noticed that the hole turned a little bit whitish in the center. This is part of the healing process, think of it as a scab.