Having straight and beautiful teeth not only gives you confidence, but also leaves a good impression on people. But orthodontics is a long-term process, so don’t think you can get it done overnight. Some parents think that orthodontic treatment should wait until their children have finished replacing their teeth, but they do not know that some children will appear as early as 3 to 4 years old, “Geodetic”, and some at the age of 8 or 9 years old, the upper jaw or jaw bone development and other problems, often affecting bone development and facial development, affecting the difficulty and effectiveness of later orthodontic treatment. When the above situation is encountered, early intervention is needed to help guide the teeth in a more normal position of the upper and lower jaws, and then orthodontic effect is better after the teeth are replaced. At the same time, due to the poor air quality nowadays, many children have respiratory problems such as rhinitis and adenoid hypertrophy, and if such problems occur during orthodontic treatment, they should go to the quintuplegia department to have them resolved before orthodontic treatment. If the child does not have the phenomenon of the ground, the upper and lower jaws are not coordinated, usually wait until the end of the tooth replacement can be orthodontic teeth, because orthodontic teeth need to assess the proportion of the relationship between teeth and bone, if all the milk teeth can not be accurately judged, therefore, need to wait for permanent teeth before orthodontic. “It is important to note that due to individual differences in children, not all children will finish replacing their teeth at the age of 12, some will have finished replacing their teeth by the age of 10, while others will wait until they are 16.” How to choose an orthodontic appliance Generally speaking, orthodontic treatment is commonly fixed orthodontics, that is, wearing braces. However, the material of braces is divided into three categories. 1, wire type braces. Metal brackets, smooth surface and small size, strong and durable, accurate groove, help the perfect alignment of teeth, bracket edge unique rounding treatment reduces the adverse stimulation of the oral mucosa. But because they are metal, easy to choke the mouth, if improper care is easy to cause tooth decay, ulcers and so on. 2.Ceramic braces. Ceramic brackets have the same color and beauty as real teeth, and the ceramic brackets made of high quality porcelain powder have the same mechanical strength and function as metal brackets. 3.Crystal braces. The brackets are more transparent. There is another type of invisible braces that can be removed. The use of polymer materials made of transparent aligners, can be completed in the state of no wire, no brackets orthodontics. They are aesthetically pleasing, self-removing and easy to clean during orthodontic treatment. They are easy to remove and can be brushed or flossed at any time during treatment to keep the mouth clean. However, there is a good or bad compliance, because it is self-removable, if the wearing time is not up to standard, it will affect the orthodontic effect. In the process of orthodontic treatment, the teeth are slightly moved and altered in the alveolar bone by using biomedical principles, and there will be mild loosening during the movement, but it will not cause premature tooth loss because the teeth are suspended inside the alveolar bone with small ligaments, and the teeth have certain physiological mobility. It is normal to experience soreness and pain during the first 3 to 7 days of wearing braces, which will generally disappear in 7 days. Orthodontics must pay attention to the post-maintenance period during the braces need to be regularly reviewed, preferably every 4 to 6 weeks to go to the hospital for review, especially for patients with heavy school or not in the local school, if for various reasons not regularly reviewed, orthodontic effect will be greatly reduced. Among them, the orthodontic process should try to avoid hard, sticky food; wire slipped or brackets fall off need to go to the hospital. In addition, if the braces are worn during the period of special loosening, tooth decay and other symptoms, you should go to the hospital in time to deal with. After the removal of braces in order to ensure orthodontic effect, post-maintenance also need to wear retainers for two years, after wearing the 3 months to review, if the condition is good then changed to half a year to review.