A full set of Invisalign can cost anywhere between $3,500 and $9,500, depending on a number of factors unique to each individual. The main factors influencing the price include: - Severity of the Dental Problem — The main factor affecting the cost of an Invisalign treatment is the severity of the dental problems being corrected, such as the degree of misalignment of the teeth, the number of teeth that are misaligned, and the location of the teeth being corrected. Therefore, moderate to severe cases of teeth misalignment will cost more as they require longer treatments. - The Geographic Location of the Clinic — Each state has its own average cost of Invisalign based on various aspects such as availability, demand, and resources. Rural clinics typically charge more than dental practices in the city. The type of dental office may also impact the cost of treatment; private dental offices may be more expensive than dental clinics, and dental schools may be able to provide the least expensive treatment. - The Dentist’s Expertise — Orthodontists, dentists who specialize in correcting dental irregularities, usually charge more than dentists because they solely focus on teeth straightening treatments and assessing malocclusions. - Invisalign Retainers — Upon completion of treatment, patients are typically required to wear retainers in order to keep their teeth straight. These retainers are generally not included in the price and can cost anywhere between $400 to $1,000 per set of four.