The best age for orthodontic malocclusion for adolescents should be between the ages of 10-12 (generally at the end of milk tooth replacement and the beginning of permanent teeth), while orthodontic treatment of skeletal malformations is best located at the peak of youth growth and development. “The principle of “early detection and timely correction” is that the earliest correction is usually started during the period of milk teeth, and the treatment of dental malocclusion is simpler, while orthopedic treatment is required for bony malocclusion, and surgery is required for severe cases until adulthood.