The orthodontic treatment of malocclusion is divided into several periods: 1. The period of the milk teeth, when the child is about 4 weeks old, is the best age for the correction of malocclusion. The anti (teeth together) is the lower jaw teeth wrapped around the upper jaw teeth, or called the ground or called pocket teeth. When a child of about 4 years old is found to be anti (dentition) deformity, must be corrected in time, is the best time to correct; 2, adolescents, tooth alignment, tooth protrusion, anti (dentition) deformity, about 11-13 years old is the best orthodontic age; 3, children, adolescents later have bony mis (dentition) deformity, such as bony open (dentition), bony anti (dentition), probably corrected at the age of 16-17 years old is the best orthodontic period The orthodontic period, through orthodontic surgery later; 4, adults, although past the best period of growth and development, as long as the periodontal condition allows correction, you can always visit the clinic.