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The Invisalign appliance/ Clear aligner may be a treatment option for simple malocclusions, but it has some limitations. Achieving similar results to those of more conventional fixed appliances may be difficult. The use of the Invisalign appliance in combination with fixed appliances has been explored to reduce the time needed to wear fixed appliances, but may result in considerably higher professional fees overall. Conversely, the Invisalign appliance can provide an excellent esthetic during treatment, ease of use, comfort of wear, and superior oral hygiene. Additional research and refinement of the design should allow further development of this worthwhile treatment.