Orthodontic treatment is used to straighten teeth and correct a misaligned bite. Orthodontists align teeth with braces by applying constant pressure in a desired direction. The pressure is adjusted at prescribed intervals over the course of the orthodontic treatment, which can last from one to three years or longer depending on the severity of the patient's case. There are several types of orthodontic braces available to consumers, including the traditional metal braces and now the new, clear Invisalign. It is important to investigate you options and speak with your dentist to find out what is best for you.