ㅇㅇㄷ Dental orthodontic consultation ㅠ

People around me told me not to straighten my nose too much, so
 I tried to go for orthodontic consultation, but since my company is in Gangnam, I first got consultation from ㅇㅇㄷ Dental Clinic, where my friend works.
 First of all, I was scared because it was a large hospital, so I went in, filled out a chart, sat down, and
 looked around, but there was a big hospital. It's a hospital, but it's so clean. For a moment, I was thinking, "What kind of cleaning company are they using?"
 and waited for about 30 to 40 minutes? There was a wait ㅠ I was a little annoyed because the wait was
 longer than I expected, but should I say that the consultation with the director who looked at my teeth was very accurate?? I'm trying to make a decision based on half hurt and half faith because they only hit me with facts.
 Is there anyone who can recommend a dentist in this area from Gangnam to Goteo to Isu?
 He said I should get more orthodontic consultation..