It usually takes a while to get accustomed to having a new oral device. However, patients usually find aligners much more comfortable. First, the aligners have soft edges, meaning there are no sharp edges that can irritate the soft tissues of the oral cavity.
Secondly, there is no need to visit the dentist for routine tightening appointments. Those who opt for Invisalign will only get different sets of aligners that will be switched out every two weeks. Each aligner is somewhat different from the previous set. It is normal to feel a slight pressure on the first after putting on the new aligners, but the feeling should disappear after a day or two.