Invisalign Eligibility Criteria: Are There Teeth That Can't Be Treated?
Oral Health Blog

Invisalign Eligibility Criteria: Are There Teeth That Can't Be Treated?


Invisalign has transformed the orthodontic landscape by offering a virtually invisible and comfortable way to straighten teeth. While it's a popular choice for many, not all teeth qualify for Invisalign treatment. In this article, we will explore the factors and conditions that may determine whether Invisalign is the right choice for your orthodontic needs.

1. Severe Misalignment

Invisalign is typically designed for mild to moderate teeth misalignment. Severe cases of misalignment, such as significant overbites, underbites, or complex malocclusions, may not qualify for Invisalign. In these cases, traditional braces or other orthodontic treatments might be recommended.

2. Tooth Size Discrepancies

Teeth that are significantly larger or smaller than average can pose challenges for Invisalign treatment. When there are extreme variations in tooth size, it may affect the aligner's fit and effectiveness. Your orthodontist will assess these discrepancies to determine if Invisalign is a suitable option.

3. Missing Teeth

Invisalign relies on a full set of teeth for proper alignment. If you have missing teeth, especially multiple adjacent teeth, it can complicate the treatment process. Your orthodontist may recommend other treatments, such as dental implants or bridges, to address the gaps before considering Invisalign.

4. Jaw Issues

In some cases, orthodontic problems go beyond tooth misalignment and involve underlying jaw issues. Conditions like severe overjet (where the upper front teeth protrude significantly) or underjet (receded lower jaw) might require more complex orthodontic approaches beyond Invisalign.

5. Complex Dental Restorations

Extensive dental restorations, such as dental crowns, bridges, or dental implants, can affect Invisalign's ability to work effectively. The aligners are custom-made to fit your natural teeth, and if there are multiple dental restorations, it can be challenging to achieve the desired alignment.

6. Compliance and Commitment

Invisalign requires a high level of patient compliance. For the treatment to be effective, patients must wear the aligners for at least 22 hours a day and change them every two weeks. Patients who may struggle with maintaining this level of commitment may not be suitable candidates for Invisalign.

7. Age Considerations

Invisalign is typically recommended for older teenagers and adults. Younger children may not have fully developed teeth, and the aligners may not fit properly as their mouths grow and change. However, Invisalign offers specific solutions for teens, such as Invisalign Teen, which can be an option based on individual cases.

8. Gum or Periodontal Issues

Patients with severe gum issues or periodontal disease may not be suitable candidates for Invisalign. Healthy gums are essential for the success of orthodontic treatment. It's important to address gum problems before pursuing Invisalign.


Invisalign is a fantastic orthodontic option for many people, but not all teeth qualify for this treatment. The eligibility for Invisalign depends on various factors, including the severity of misalignment, jaw issues, tooth size, and dental restorations. To determine if Invisalign is right for you, it's crucial to consult with an experienced orthodontist who can assess your specific needs and recommend the most suitable treatment.

Keep in mind that advancements in orthodontics are continually expanding the range of cases that Invisalign can address. If you're interested in Invisalign but are uncertain about your eligibility, schedule a consultation with an orthodontist who can provide personalized guidance on achieving your dream smile.

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The content in this article is for informational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider before making any changes to your health regimen. The author and publisher do not take responsibility for any consequences resulting from the information provided in this article.