If the first correction is unsuccessful and the teeth are in good condition, a second correction can be made. Fairy can do invisible correction for beauty. Invisible braces is not only beautiful, but also has less friction, is more comfortable to wear and can be adhered to better. But remember, the time to wear braces must be controlled at least 20 hours, so as not to affect the correction effect. If necessary, you can go to Ping An Health APP to consult a doctor first.