I recommend the Apple Tree Dental Hospital in Juyeop-dong, Ilsan.

This isn't a small, neighborhood dental clinic. I think many people know about Apple Tree Dental Clinic. There are plenty of other chains, too. This Apple Tree Dental Clinic is a fairly large, hospital-level clinic, occupying an entire building. As a result, there are always a lot of patients. Still, the staff was friendly and helpful. The prices felt a bit higher, which is typical of hospital-level dental clinics. The scaling was also painless and effective.