Invisalign consists of clear aligners made out of special durable plastic, which comfortably and quickly move your teeth into the ideal position for a great smile. Each set of aligners are usually changed every week, and treatment time can range from as quick as 12 weeks for simple cases, to 12-18 months for more complicated cases. The average treatment time at our clinic is approximately 9-12 months, however this usually depends on the severity of the problems. The main advantage of Invisalign over other brands is their technology. They have invested millions of dollars and thousands of hours into improving their aligners every year, and this allows them to have significant advantages over other brands through lower treatment times, more cost-effective options, incomparable comfort and great aesthetics.