Clear aligners are mostly used by adults. Clear aligners for teeth can correct any defect ranging from crooked teeth to severe overbites, underbite, or malocclusion. When using clear aligners in Australia, you will be given a series of aligners called “trays”. These trays fit right on your teeth. You must wear these aligners for 20 hours daily. After wearing them for two weeks, you’ll take them off and wear the next set of trays. Each set of aligners adjusts your teeth a little more until you achieve the perfect position. Patients with gap teeth are very eligible for clear aligners because their correction doesn’t need much force.