Look no further!
I had two wisdom teeth surgically extracted, one of which was completely horizontal, and I was told by my local dentist it's on a nerve and I had to go to a University Hospital. I wanted a second opinion, and I found Blanche Clinic online. Scheduled an appointment and it was done a week after my first visit.
Dr Seo is excellent, explaining everything in detail starting from the type of x-ray, straight through to your recovery after extraction. Being told its complicated, and I could get nerve damage, by other dentists already scared the crap out of me. But the staff at Blanche are out of this world, reassuring and calming me. On the day of the extraction, he sits you down and explains exactly what he is going to do. He will also give you a complete dental exam, and make recommendations if there are other issues.
If you are anxious when going to dentists, you should definitely go to Blanche Clinic. Staff are helpful, friendly, supportive and speak English. If I wasn't such a baby, I would have only paid around 39k for the extraction (with Korean Health Insurance) but the IV sedation was 300k (not covered, unfortunately, but WORTH it).
Special thanks to Dr Seo and Sofia. I will always recommend Blanche Clinic to anyone looking for a dentist in Seoul.