I had 4 teeth extracted in total, 2 upper teeth and 2 lower teeth,
and had orthodontic treatment for a little over 2 years.
My jaw is on the narrow side, so I had a snaggletooth in my lower teeth, but it was resolved with orthodontic treatment. Maybe because I had orthodontics after extractions on both the upper and lower teeth, I heard a lot that my jawline became slimmer.