If my wisdom teeth grew in fine, will the military let me keep them or waiver them if I join?

You should be good. But at some point after you get in...could be a few years down the road, the military could turn around and tell you to get them removed.

Lol most people still have their wisdom teeth, there's nothing to waive

My wisdom teeth were all impacted and I had them removed before I went into the service. My Dad had had some bad experiences with a Navy Dentist during WWII and decided a good oral surgeon We already knew would be a better bet and get it done before I went in. ( that Dentist, Dr Harold Nathanson that removed My wisdom teeth by the way had been a Fighter Pilot in the Navy during WWII and was still a very active private Pilot and flew aerobatics in air shows ) My Dad had a filling done out at sea during WWII and the cavity was filled with cotton and filled over and the cotton was rotting inside the tooth, years later it had to be repaired. He figured at least having it done before entering the Military I would know Who was in my mouth and figured I might be better off for that.