FMS SmartALIGN consists of a series of Clear Aligners which are invisible. Clear aligners are also called invisible aligners, which is a type of orthodontic treatment that corrects malaligned or crooked teeth. They are removable and virtually invisible and considered to be alternative to braces. Aligner trays are custom-made for every patient and the number of aligners will depend on the severity of malalignment (malocclusion). With each new aligner set, your teeth slowly move and gradually realign to your desired smile. These aligners achieve maximum tooth movement only by continuous usage (almost 20-22 hours per day).