You'll be provided with a series of aligners. Each aligner will make small adjustments to your tooth position. When the aligners are placed on to your teeth, they cause them to gradually move from their current position to improved positions. Each set of aligners are worn for 2 weeks at a time, as your teeth are moved gradually into their new and position. To ensure your treatment progresses on schedule, the aligners need to be worn for 22 hours each day and only removed for eating and cleaning.