Can Aligners Fix a Scissor Bite?
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Can Clear Aligners Fix a Scissor Bite?
A scissor bite is a less common but significant type of malocclusion where the upper teeth completely overlap the lower teeth in a way that prevents proper contact. This condition can affect chewing, lead to uneven tooth wear, and impact jaw function over time. Yes, clear aligners can treat mild cases of scissor bite, particularly when the problem is dental rather than skeletal. For more severe cases, a combination of orthodontic tools—or even braces—may be necessary to fully correct the bite.
What Is a Scissor Bite?
In a scissor bite, the buccal (outer) cusps of the upper teeth extend past the outer cusps of the lower teeth, often on one or both sides of the mouth. This differs from a crossbite, where the upper teeth sit inside the lower ones. A scissor bite often results in:
Difficulty chewing properly
Tooth wear on the inner surfaces of the upper teeth and outer surfaces of the lower teeth
TMJ discomfort or jaw strain
Facial asymmetry if left untreated over time
Scissor bites can be caused by genetic jaw structure, prolonged thumb-sucking, or uneven tooth eruption.
How Aligners Can Help
Clear aligners like Invisalign work by applying controlled, gradual pressure to move the teeth into more ideal positions. In cases of mild scissor bite, aligners may be able to:
Move upper molars and premolars inward
Move lower molars and premolars outward
Correct tooth inclinations that contribute to bite imbalance
Improve the occlusal (bite) contact for better function
Using 3D digital scans and planning software, aligners can be designed to shift specific teeth with high precision.
When Aligners May Not Be Enough
If the scissor bite is severe or caused by skeletal discrepancies (such as a narrow lower jaw or wide upper arch), aligners alone may not be effective. In these cases, your provider may recommend:
Braces with elastics for greater vertical and transverse control
Palatal expanders to widen the upper arch (common in younger patients)
Functional appliances to guide jaw development in growing children
Jaw surgery in adult patients with significant skeletal discrepancies
Early evaluation and diagnosis are key to selecting the right treatment plan.
What to Expect During Treatment
Mild scissor bites may respond well to aligners over 6–12 months
Attachments may be used on molars or premolars to assist in vertical or lateral movement
Consistent aligner wear—20 to 22 hours per day—is crucial for success
Regular follow-ups are needed to assess bite improvement and make refinements
After treatment, a retainer will be required to maintain the bite correction.
Dr. Bak’s Expertise in Bite Correction with Aligners
With over 25 years of orthodontic experience, Dr. Bak Nguyen provides personalized treatment plans that address both aesthetic alignment and functional bite issues. Using advanced 3D technology, he can identify whether a scissor bite is suitable for aligner treatment—or if a more comprehensive approach is needed.
Book a free virtual consultation to learn more about your case, its treatment time and cost with Dr Bak Nguyen (the real one).
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