I had my first cavity treated at Seoul U-Pen Dental Clinic in Mapo-gu, and I felt relieved.

I visited the dentist because my tooth was sensitive and painful. The test results showed I had early-stage cavities, so I received treatment. I was nervous because it was my first time, but the medical staff showed me photos of my current condition and explained the treatment process step by step, which put me at ease.
From anesthesia to the treatment itself, they carefully asked if I was experiencing any discomfort, and if I raised my hand during treatment, they immediately stopped, so I could receive the treatment without any pressure. I felt less pain than I expected, and the dental care didn't take long, which was nice. The facilities aren't modern, but rather have an old-fashioned, brownish color scheme, but they're quite clean, and the nurses are friendly.