The first and most important part of the orthodontic process is to see a specialist at a specialist hospital to develop a professional orthodontic plan, and there is a lot of preparation to be done before a professional orthodontic plan is made. The first step is to take X-ray films, including panoramic and lateral head films. Nowadays, many hospitals will provide more accurate head CT films, CT can be more specialized to find oral problems. After the radiographs are taken, the teeth will be modeled, and the model will be able to remember the initial state before orthodontic treatment, so that it can be kept and compared with future models, and many data analyses can be performed on it. The next step is to take pictures, including six inside and six outside of the mouth, which is also a comparison of the entire orthodontic patient’s face. After the orthodontic program, some patients need to have their teeth extracted and prepared for orthodontic treatment. The next step is to place the orthodontic appliances. After the braces are placed, the braces with brackets will be reviewed once every 4-6 weeks. Invisalign without brackets will be reviewed once every 8-10 weeks. After the orthodontic treatment is completed, the orthodontic process is monitored for a period of time with molding. After the orthodontic treatment is completed, the alignment is performed. Once the orthodontic treatment is complete and the patient is satisfied, the aligners can be removed. The most critical step after removing the aligners is to wear a retainer, and wearing a retainer also requires regular review, usually followed up for five years.