A place that does good orthodontics

Please recommend a good place for correction services heading towards Iksan, Jeonju, or Gunsan.

My shoulders hurt and my back is also not in good condition.

I want to get orthodontic treatment, but I don't know where is good.

They say that going anywhere without information can actually make you feel worse, haha.

Maybe it's because I look at my smartphone frequently these days.

My neck also hurts a bit, and I'm worried about a forward head posture.

I want to try getting orthodontic treatment once.

Are those who received it okay?