The fixed orthosis is glued to the teeth by special materials. In two to five days, the teeth may feel sore due to stress. The oral mucosa may also be scratched by the appliance, but these can be tolerated and prevented, and will disappear automatically after one week. Generally, you do not need to take medicine. After each visit, the patient may feel the teeth tighten and pain, but Very slight, on the contrary, severe pain is not normal. Compared to fixed correction, the symptoms of invisible correction are much better.