While Clear Aligners is designed to be comfortable and easy to wear, some discomfort or pain may occur, especially when first wearing a new set of aligners. The clear aligners are designed to fit snugly on your teeth, in order to move them into their correct positions. A new set may feel tight at first, but your mouth will soon adjust to the feeling. The aligners work by putting pressure on your teeth to move them into their correct alignment, so you may feel tension or discomfort, especially in the beginning. In fact, mild discomfort or tightness is a good sign that the treatment is working, since it means your teeth are being guided to their correct positions! Generally, patients find that Clear Aligners is more comfortable and less painful than metal braces. There are no metal brackets or wires that can come loose and poke your mouth, and rather than tightening the appliance, which can cause soreness in the teeth and jaw, the aligners fit snugly around your teeth for all-around movement.