Since its orthodontic products entered the market in 2007, customers have been deployed and implemented in more than 80 countries and regions such as the United States, Brazil, and Australia. In order to better promote the practice and application of orthodontics in clinical work and strengthen experience sharing, PROTECT introduced the project of various cases with complicated difficulties in detail and invited dentists and experts in the industry to study and discuss. Here, the clinical application of products is shown in detail. Through the comparison of face photos, intraoral photos, and lateral cephalograms of patients before and after treatment, the use effect of the products can be clearly shown, thus achieving the expected goal of correction, which further illustrates The practicability and reliability of PROTECT products in clinical applications. Here are some correction cases for reference.