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Have you ever worn braces on your teeth? These are orthodontic devices that are supposed to straighten your teeth. This method applies steady pressure to gradually move the teeth over time. The time needed for braces to do their job varies from one person to the next. It depends on how severe the problem is and other factors. Usually , braces stay on for one to three years. Once the braces are removed, the patient will probably be required to wear a removable appliance called a retainer for several months. Retainers help the teeth stay in their newly aligned positions after braces are removed. There is an alternative to metal braces. The braces from Invisalign in Saint Louis Park are removable, invisible braces. The smooth plastic of these braces is far more comfortable than irritating metal braces.