The exact length of the Invisalign treatment plan will vary depending on the condition of your teeth. Some people wear Invisalign aligners for 12 months, while others may wear them for 24 months. Our cosmetic dentist will create an individualized treatment plan for those looking for Invisalign braces in Ancaster. The use of Invisalign aligners is most common among teenagers. But adults can wear them as well. However, the process may be easier to complete for teenagers.