Metal brackets refer to the braces used in the orthodontic process, which have the advantages of faster speed, long-lasting corrective effect, and affordable price. 1. Faster speed: metal brackets are stronger than invisible braces, and for some cases, they can achieve the corrective effect faster. 2. Long-lasting straightening effect: after using metal brackets for teeth straightening, it is not easy to rebound, and the straightening effect on teeth can last for a long time. 3. Affordable price: metal brackets have the advantage of lower price compared with invisible braces. Although metal brackets have many advantages, they also have many disadvantages, such as discomfort and lack of aesthetics. It is recommended to choose according to your personal situation.