I finally tried teeth whitening, haha. I chose the lightest tone for the top teeth, but there is a bit of a color difference compared to the bottom ones... For now, I'm leaving them as they are and plan to get the bottoms matched later when I save up a bit more money. I was a little nervous when they gave me the anesthetic injection, but the nurse kept patting me on the back, so I was a bit less anxious. I arrived right on time for my appointment, so it was great that everything went quickly without any waiting. I'm scheduled to come back in two weeks for a follow-up check-up, haha.