Orthodontic correction is to pull the root to the normal tooth position by the external force of steel wire to achieve the purpose of neat and beautiful teeth. There may be tooth extraction in the dentition. You are 22 years old, and your alveolar bone is mature. It takes about 1.5~2 years to correct it. In the later stage, depending on the situation of people and alveolar bone correction, you may need to wear a retainer to maintain the orthodontic shape.

beauty crown orthodontics is aimed at adults to make a few teeth that don't look good, and then make a few teeth that don't look good. It is different from orthodontics, which needs to adjust the enamel by changing the position of the root. It only needs to go to the hospital twice, and it can be completely corrected at an interval of 7 days. It's a permanent corrective plan.

I hope my answer can help you.