The disadvantages of Invisalign are as follows: 1, the principle of invisible orthodontic treatment is to push the teeth to move gradually by wearing transparent braces and wrapping around each tooth surface, when the patient’s full-mouth crowns are shorter, it is easy to loosen and fall off the aligners, resulting in failure of orthodontic treatment; 2, patients with severely twisted teeth can’t be easily put into position when wearing the aligners, so they can’t apply the invisible orthodontic treatment; 3, the texture of the transparent aligners is softer and easy to wear down, and patients who suffer from the habit of nighttime Patients with habits such as teeth grinding or clenching can wear down the aligners within a few days and cannot complete the orthodontic program; 4. Invisalign’s orthodontic power is relatively weak and requires too much orthodontic time, and when there is a difference in the orthodontic goals, the aligners need to be remade, which further prolongs the orthodontic process.