I don't have kids of my own, so I can't comment on the parent perspective. However, from my own experience, I was 19 when my wisdom teeth were pulled, a month or so before I turned 20. I only grew three wisdom teeth (two top, one bottom). The two on the top were longer than the rest of my upper teeth, so they were throwing my bite off. The one on the bottom was impacted, and pushing in to the tooth next to it. That one was very painful. My dentist referred me to an amazing oral surgeon, and I haven't had any problems since.