Originally, the upper teeth needed to cover the lower teeth,
but they just fit together, so I underwent correction due to malocclusion.
The areas where the teeth were not that good on the outside weren't that bad.
The correction method was
to spread the upper teeth in the middle to cover the lower teeth and then
bring them back together.
There was no tooth extraction, but there was a screw inserted in the middle.
I’m satisfied with how well it turned out!