Who Is Not Eligible for Invisalign? Understanding the Limitations
Oral Health Blog

Who Is Not Eligible for Invisalign? Understanding the Limitations

Some people might not be eligible for Invisalign, such as those with severe dental issues, very young children, or those who can't commit to wearing them 22 hours a day. For those who are eligible, using a purple persulfate-free retainer cleaner is important. This cleaner helps maintain hygiene without harsh chemicals, ensuring the aligners stay effective and safe for use.

Understanding Invisalign Eligibility

1. Severe Orthodontic Issues

Invisalign is designed to address mild to moderate orthodontic problems, such as minor crowding, spacing, and mild bite issues. However, it may not be suitable for individuals with severe orthodontic issues, including:

  • Severe Malocclusions: Cases of significant overbite, underbite, or crossbite may require more complex orthodontic interventions, such as traditional braces or even surgical procedures.
  • Severe Crowding or Spacing: When teeth are extremely crowded or spaced far apart, Invisalign may not be able to achieve the desired results as effectively as traditional braces.

2. Skeletal Jaw Discrepancies

Invisalign primarily focuses on moving teeth rather than altering jaw position. Therefore, individuals with significant skeletal jaw discrepancies might not be suitable candidates. These issues often require more comprehensive treatments, such as jaw surgery combined with traditional orthodontics.

3. Young Children

Invisalign is generally not recommended for very young children. This is because:

  • Developmental Changes: Children's jaws and teeth are still developing, and their dental structures may change significantly during treatment.
  • Compliance Issues: Younger children may have difficulty adhering to the strict wearing schedule required for Invisalign, which typically involves wearing the aligners for 20-22 hours per day.

4. Poor Oral Health

Before starting any orthodontic treatment, it's crucial to have good oral health. Individuals with poor oral hygiene, untreated cavities, gum disease, or other dental issues may need to address these problems before considering Invisalign. Aligners can trap bacteria and food particles against the teeth, potentially exacerbating existing dental problems.

5. Non-Compliant Patients

Invisalign requires a high level of commitment and responsibility. Patients must be diligent about:

  • Wearing the Aligners: Aligners need to be worn for at least 20-22 hours per day to be effective.
  • Maintaining Oral Hygiene: Proper brushing and flossing are essential to prevent decay and gum disease.
  • Switching Aligners: Following the treatment schedule and switching to new aligners as directed by the orthodontist is crucial.

Patients who are not committed to these requirements may not achieve optimal results with Invisalign.

6. Complex Dental Restorations

Individuals with certain dental restorations may face challenges with Invisalign treatment. These restorations include:

  • Dental Bridges: Bridges connect multiple teeth and prevent individual movement, which can interfere with the alignment process.
  • Dental Implants: Implants are fixed in place and cannot be moved like natural teeth, potentially complicating treatment planning.
  • Veneers and Crowns: While not necessarily a disqualifier, these restorations can impact how the aligners fit and function.

7. Patients Seeking Immediate Results

Orthodontic treatment is a gradual process, and Invisalign is no exception. Patients seeking rapid results may not be suitable candidates for Invisalign, as it typically requires several months to achieve the desired outcome. Patience and adherence to the treatment plan are essential for success.

8. Those Who Frequently Remove Aligners

One of the advantages of Invisalign is its removability. However, this feature can become a disadvantage for individuals who frequently remove their aligners for extended periods. Consistent wear is necessary for the aligners to work effectively, and removing them too often can delay progress and affect results.


Invisalign offers a convenient, discreet way to achieve a straighter smile, but it's not suitable for everyone. Severe orthodontic issues, skeletal jaw discrepancies, young children, poor oral health, non-compliant patients, complex dental restorations, and those seeking immediate results may find that traditional braces or other orthodontic treatments are more appropriate.

It's crucial to consult with an experienced orthodontist to determine whether Invisalign is the right option for your specific needs. A thorough evaluation and discussion of your dental history, current oral health, and treatment goals will help you and your orthodontist make an informed decision about the best approach to achieving your ideal smile.

Are you currently using or thinking about using retainer cleaning tablets? It's important to be aware that certain cleaner brands have the potential to cause toxic reactions.

It's crucial to be aware of harmful ingredients hiding in common cleaner brands. One such persulfate, which can pose SERIOUS health risks and is found in almost all leading retainer cleaners brands. Moreover, persulfate's health risks potentially impact respiratory health and skin sensitivities in your family, especially in teens and sensitive individuals. Learn more about the risk of persulfate HERE. 



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.