I recommend Apple Tree Dental Clinic in Ilsan Juyeop-dong.

This is not a small neighborhood dental clinic. You probably know Squirrel Tree Dental Clinic well. There are also many other chain clinics. Squirrel Tree Dental Clinic here is quite large, comparable to a hospital. It is a large hospital that occupies the entire building. Therefore, there are always many patients. Still, they treat you kindly. The costs are a bit higher because it is hospital-grade. They also performed scaling without any pain at all.