Teeth can be corrected at the age of 33. There is no age limit for orthodontic treatment, but the speed of treatment is slightly different. When boys are 11-14 years old and girls are 10-13 years old, the jaw is in a period of rapid development, the teeth move quickly, and the alveolar bone can complete growth and reconstruction in a short time, and the correction goal can be achieved in 1-2 years. At the age of 33, the jawbone has been fully developed, and the metabolic activity of osteoblasts and osteoclasts is inactive. The correction time is relatively long, but it does not affect the correction effect, which generally takes 2-3 years.