Correction that started because of the extra teeth on the roof of the mouth. The first correction was completed with the occlusion of the upper and lower teeth. I had to express my opinion that the occlusion was unnatural, but at that time I was a student, so I couldn't say it right away. ㅜㅜ After about 10 years, the front teeth line spread outward and changed to an open bite. It was done by screwing the non-extracted tooth and inserting the tooth, and of course the railroad was laid. To be honest, it was very difficult throughout the retraining. The inside of my mouth was swept by the brackets, so I often took it apart, screwed the gums up and down, brushing my teeth, and taking great care in eating. But in the end, the gums became inflamed and the screw was removed faster than expected... Because the teeth were not extracted, the alignment of the teeth was shifted, and the front teeth were slightly extended, but it changed to a normal bite, so I just live with it. Looking at the pictures of my teeth, I was stressed because before orthodontic treatment was even more stressful.. But the profile has changed a lot. Before the orthodontic treatment, the lower jaw looked protruding, but when the teeth are pulled out, the jaw appears to have retracted. This is the most satisfying part after the correction. If you have lost anything, the jaw joint.... Wear a rubber band, never, never, never, never, open your mouth wideㅜㅜ I fell out of the disc while yawning. And sore gums... The pain that sometimes comes when I eat cold food or hot food ㅜㅜ The whole process was not smooth, so I am diligently wearing a retainer to avoid re-correction. I also suffered quite a bit. To be honest, I still sigh when I look at the tooth pictures. I am so envious of those who have chosen this since birth ㅠㅠ Those who really need correction should do it, but I felt that it would be a good treatment if it didn't interfere with my daily life.