Invisalign retainers are a new way to straighten teeth without the use of conventional braces. Plastic aligners are used to create tooth movement for patients. Moving teeth with removable aligners is not a new technology, but the computer program that is used to create the aligners and dictate the changes to the aligners is the new technology. Invisalign is recommended for orthodontic situations that require mild to moderate correction of spacing or crowding. The aligners are virtually undetectable, easy to use and comfortable to wear.