The first few days wearing each new aligner can feel a little tender or sore, as your mouth get adjusted to the new fit of the aligner. However, if you experience serious pain lasting more than a few days, contact our support team ASAP, and we will get you in touch with your dentist. Just because your mouth stops hurting after the first few days, doesn’t mean your aligners stop working, however. Your teeth will continue to move as you wear your aligners.