I recommend Kim Jin Dental Clinic in Gangnam-dong.

This is the dental clinic I've been going to since I was little. The doctors are kind and don't overtreat, so I recommend it! I went to another hospital because of my wisdom teeth, but this time, I came back for a cavity problem after a long time. Thanks to the director who asked how I was doing and made me feel comfortable, I received good treatment. ㅎㅎㅎ It's not a large neighborhood dental clinic, but I trust it because it's been around for a long time. 😌