During middle and high school, children will have all of their permanent teeth, with the final teeth coming in and the arrival of the molars known as "12-year-old molars." In addition, skeletal growth will also gradually slow down, making this the best time to begin final orthodontic treatment, and it is known as the "golden age" of orthodontic treatment! The treatment period is relatively shorter than starting treatment as an adult, and the condition of the teeth and gums is