How Long Does Invisalign® Treatment Take?

Invisalign, a clear aligner system, has revolutionized orthodontic treatment, offering a discreet and comfortable alternative to traditional metal braces. However, the duration of Invisalign treatment is a common concern among prospective patients. Understanding the factors that influence treatment time can help individuals make informed decisions about their orthodontic journey.

Average Treatment Duration

In general, Invisalign treatment takes an average of 12 to 18 months to complete. However, this timeframe can vary significantly depending on several factors:

  • Severity of Malocclusion: The complexity of the tooth misalignment significantly impacts treatment duration. Simple cases may require as few as 6 months, while more complex cases can extend beyond 2 years.

  • Compliance with Treatment Plan: Adhering to the recommended wear time for aligners is crucial for efficient treatment progress. Non-compliance can prolong treatment and increase the risk of complications.

  • Patient’s Age: Younger individuals tend to have more responsive teeth and bones, leading to faster treatment compared to older adults.

  • Additional Orthodontic Procedures: In some cases, additional procedures like tooth extraction or interproximal reduction (IPR) may be necessary to prepare for Invisalign treatment. These procedures can add to the overall treatment time.

Factors That May Prolong Treatment

Specific factors that may prolong Invisalign treatment include:

  • Severe Crowding or Spacing: Excessive crowding or spacing of teeth requires more aligners and longer wear times to achieve proper alignment.

  • Impacted Teeth: Impacted teeth, which are buried within the jawbone, may require surgical exposure or adjunctive procedures to facilitate movement.

  • Root Resorption: In rare cases, excessive pressure from aligners can lead to root resorption, a condition that affects the tooth’s root structure. This may necessitate additional treatment or monitoring.

Monitoring Progress and Communicating with Your Dentist

Regular checkups with your orthodontist are essential throughout Invisalign treatment. These visits allow them to assess the progress, make adjustments to the treatment plan if needed, and address any concerns. Open communication with your dentist is crucial to ensure a smooth and successful treatment experience.


Invisalign treatment offers a convenient and aesthetically pleasing option for achieving a straighter smile. While the average treatment duration is 12 to 18 months, it’s important to understand that individual factors can influence the timeline. Maintaining good oral hygiene, adhering to the treatment plan, and communicating regularly with your orthodontist are key to optimizing treatment outcomes and achieving a beautiful, confident smile. Please find the dental office near you in these locations: Attleboro, Chelmsford, Hyde Park, Jamaica Plain, Lynn, Manchester, Methuen, Roslindale, Taunton.

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