Key Takeaways
- Crossbite and deep bite are both treatable with Invisalign in most cases, though the more complex the misalignment, the more likely additional appliances will be part of the plan.
- Adults and growing patients follow different treatment pathways, the age at which you start treatment affects what tools your dentist can use and how long correction may take.
- Treatment time ranges from 6 to 36 months depending on severity. Getting a proper assessment early gives you a clearer picture of your specific timeline before committing.
How does Invisalign treatment work?
Before Invisalign treatment begins, a 3D scan of your teeth will be taken, which will then be used to create custom aligners for you.
These clear aligners are worn and will exert a gentle force on your teeth. It shifts your teeth gradually to the correct position to fix the crossbite or deep bite.
These aligners will be replaced with a new one every two weeks as teeth slowly move into final positions planned.
Is Invisalign Suitable for Adults with Crossbite or Deep Bite?
For adult patients, Invisalign is a practical option for most crossbite and deep bite cases. The main difference from treating younger patients is that bone growth has already completed, so the treatment works by repositioning teeth rather than guiding jaw development.
This means some of the tools used for children, such as Twin Blocks or Rapid Palatal Expanders, are typically not relevant for adults. Instead, adult treatment for moderate to more complex cases usually relies on elastics worn alongside the aligners, or attachments bonded to specific teeth to help direct more precise movements.
One thing worth knowing: attachments are small tooth-coloured composite bumps placed on certain teeth to help the aligner grip and move them more precisely. They are common in bite correction cases and are largely unnoticeable to others, which tends to matter to professionals who are image-conscious about their appearance during treatment.
Crossbite vs Deep bite
Crossbites and deep bites/overbites are two relatively common types of malocclusion. As mentioned, malocclusion is a medical term meaning poor positioning of the teeth when the jaws are closed.
Crossbite or deep bite is not limited to cosmetic problems. These are malocclusion which also has a negative effect on functions such as biting and chewing. Moreover, it also exaggerates the tooth wear rate for patients who already suffer from grinding or clenching issues.
What is a Crossbite?
Crossbite meaning when upper teeth fit inside lower teeth when they meet together. It may affect a single tooth or groups of your teeth. It can involve the front teeth(anterior), back teeth(posterior), or both.
Crossbites can cause several dental issues. Besides aesthetic issues, other possible consequences are increased wear on teeth structures, irregular enamel wear, Jaw joint issues ( TMD), and functional issues such as chewing in severe cases.
Crossbite can also affect the jaw and facial development, particularly in younger patients.
Some causes of crossbite include:
- GENETICS – If your family has a history of crossbite, it is more likely for you or your children to develop it too.
- MOUTH BREATHING – Mouth breathing can result from an obstruction in the upper airway or may have been brought about by a habit formed in childhood. Breathing through the mouth can alter the growth pattern of the face. Children with small upper jaws whose mouth breathes have an increased likelihood of getting a crossbite.
- THUMB SUCKING – Children may develop habits of thumb sucking and can be problematic for their teeth. It puts extra strain on developing teeth while also harming the soft tissues and bone within the mouth. Thumb sucking may also affect tooth movement and jaw growth which can lead to a crossbite.
- DELAYED PERMANENT TOOTH ERUPTION – There are cases when baby teeth have loosened but did not fall off, causing a delay for permanent teeth to set in. If the teeth having this problem is in the upper jaw, it can result in a crossbite.
There are two types of crossbite.
Anterior Crossbite
An anterior crossbite occurs when the upper teeth are stuck behind the lower teeth, causing the lower teeth to bite ahead of the upper teeth. In this type of crossbite, some or all upper anterior teeth are positioned behind the lower anterior teeth. In some cases, the lower front teeth may completely obscure the upper front teeth.
Posterior Crossbite
Posterior crossbite is the opposite of an anterior crossbite as the top back teeth are positioned inside the bottom back teeth. This type of crossbite occurs when the upper jaw or teeth are narrower than the lower teeth. Posterior crossbites can appear on one side or both sides of the mouth.
Can you use Invisalign to fix crossbite?
Yes, Invisalign can fix a crossbite. There are different ways to approach this, depending on its severity. For more severe cases, a patient may use other treatments together with Invisalign to achieve better results. (For example, orthognathic surgery)
Invisalign treatment is extremely effective for single tooth anterior crossbites. It can fix the malocclusion without the need for other dental procedures.
For mild to moderate posterior crossbites, your dentist may pair Invisalign with auxiliaries such as elastic wear. Auxiliaries are tools that use conjunctive to an Invisalign to enhance its effectiveness. Together, aligners and elastics gradually reposition the teeth into their proper positions over time.
In some moderate to severe posterior crossbites for growing patients (Children), the Dentist can also use orthodontic devices together with Invisalign. (For example, Twin blocks). They help guide bone growth in young patients, correct unfavourable habits such as pencil sucking, tongue thrust, and prepare patients’ teeth for Invisalign treatment.
For severe cases of posterior crossbites, a Rapid Palatal Expander, or RPE, can be used in combination with Invisalign. This device fits in the upper jaw over a few back teeth.
It has a turning screw in the middle, which patients can turn small amounts each day with a special key to create a slight pressure at the upper palatal bone for expansion. Over time, the jaw widens as the palatal bones grow wider apart.
When Invisalign May Not Be Enough for a Crossbite
For most single-tooth anterior crossbites and mild to moderate posterior crossbites, Invisalign handles the correction well. The cases where clear aligners alone become less predictable are significant skeletal crossbites, where the discrepancy is in the jaw width rather than just the tooth position.
In those situations, your dentist may discuss whether a palatal expander or, in adults, surgical correction, is needed before or alongside aligner treatment. This is not common, but it is worth understanding before starting, particularly if you have been told your crossbite is skeletal in origin.
If you have had a previous assessment elsewhere that flagged a skeletal component, bring those records to your Invisalign consultation. It helps your dentist give you a more accurate picture of what treatment will involve.
How long does it take to fix a crossbite with Invisalign?
Invisalign clear aligners can correct a crossbite within 12 to 36 months, depending on the severity of your crossbite.
What is a Deep bite?
Deep bite is more commonly known as overbite or buck teeth. It occurs when the upper set of teeth overlaps with the lower teeth, moreover the normal range.
Similar to a crossbite, a deep bite can also be hereditary.
Thumb sucking in the early years also encourage deep bite development. The pressure on the palate may influence permanent teeth to grow at an abnormal angle.
Deep bite is also a common presentation together with dental crowding.
A deep bite can cause severe issues if untreated. Some of the problems may include:
- Difficulty in chewing
- Pain when biting or chewing
- Damage to gums and other teeth
- Breathing Issues
- Speech Impediment
Can Invisalign correct deep bite?
Yes, Invisalign can correct a deep bite. It is one of the most common bite problems across all age groups.
Dentists can use the Invisalign Mandibular Advancement feature to improve deep bite for growing patients with the underdeveloped lower jaw. The Mandibular Advancement feature adds on a pair of plastic wings to the regular aligners.
It helps a young growing child posture the lower jaw forward in small increments while fixing the bite. It straightens the teeth and aligns the jaw simultaneously.
After the age of 12-13, auxiliaries such as elastic wear are used together with clear aligners to correct a deep bite or overbite. It gradually moves the bottom teeth forward while moving the top teeth back.
What Deep Bite Correction Actually Looks Like During Treatment
One aspect of deep bite treatment that patients do not always expect: the correction process can temporarily make the bite feel different before it feels better. As the aligners begin opening the bite, some patients notice a change in how their back teeth meet, this is part of the process, not a sign that something has gone wrong.
Your dentist will monitor bite changes at review appointments. For adults, these check-ins also give you the chance to flag any discomfort or functional changes you are noticing day-to-day. Deep bite cases often benefit from more frequent early reviews compared to simpler spacing or alignment cases, so factoring this into your schedule before starting is practical planning.
How long does it take to fix a deep bite with Invisalign?
The treatment time will depend on the severity of the deep bite. That said, Invisalign treatment may take between 6 to 36 months to fully correct.
Conclusion
Invisalign is an effective option for most adults with crossbite or deep bite, and the range of cases it can manage has expanded significantly with auxiliaries and attachment systems. The more relevant question is not whether Invisalign works in general, but whether it suits your specific presentation, and that requires a proper clinical assessment.
If you have been living with a crossbite or deep bite and are considering treatment, a consultation with an Invisalign-experienced dentist will give you a clearer sense of what your plan would look like, how long it might take, and whether any additional appliances would be involved.
Casa Dental’s dentists hold Invisalign Black Diamond Provider status, placing them among a small group of providers in Singapore with the highest volume of Invisalign cases. Book a consultation to discuss your bite and what treatment options are appropriate for your situation.
Frequently Asked Questions
Is Invisalign or braces better for crossbite and deep bite?
For most mild to moderate cases in adults, either can achieve good results. Invisalign is discreet and removable, which matters to many working adults. For more severe bite issues requiring significant jaw movement, traditional braces may offer more consistent control. Your dentist will advise based on your clinical findings.
Will fixing a crossbite or deep bite change how I look?
Bite correction can have a subtle positive effect on facial balance, particularly for deeper overbites where the lower face appears shorter. For most adults the change is noticeable to them but not dramatic to others. If you have specific concerns about facial changes, raise this at your consultation.
Does bite correction with Invisalign require more appointments than regular Invisalign?
It can. Bite correction cases are monitored more closely, particularly in the early stages when the bite relationship is actively changing. Most working patients find reviews are short and manageable to schedule around work commitments.
Can a crossbite come back after Invisalign treatment?
Relapse is possible with any orthodontic treatment if retainers are not worn consistently after completion. Bite corrections are generally stable when retainer instructions are followed. Your dentist will advise on the appropriate retention plan for your case.
At what age is it too late to correct a crossbite or deep bite with Invisalign?
There is no upper age limit for treating these bite issues with Invisalign. Adults in their 30s, 40s, and beyond are treated routinely. The main difference is that treatment works through tooth movement rather than jaw development, which is a factor your dentist accounts for in treatment planning.
Does Invisalign hurt more for bite correction than for regular alignment?
Some pressure or discomfort when switching to a new tray is normal with any Invisalign treatment. Bite correction cases that use elastics can add a slight additional pulling sensation as the jaw relationship changes. This tends to settle within a day or two of each new tray.
