Whether Invisalign can correct an overbite or underbite depends on what’s causing the problem in the first place. The distinction between a tooth-position issue and a jaw-position issue is the key factor in determining what treatment can achieve.
Dental vs Skeletal Malocclusion
An overbite or underbite can arise from two quite different sources. In some people, the jaws are well-positioned relative to each other, but the teeth themselves are angled or positioned in a way that creates the bite problem. This is called a dental malocclusion. In others, the underlying issue is the relationship between the upper and lower jaws, which may be due to the jaws being different sizes or positioned differently. This is a skeletal malocclusion.
Clear aligners work by moving teeth. They can’t reposition jaws. So the relevance of this distinction is direct: if your overbite or underbite is primarily a matter of tooth position, Invisalign can often address it very effectively. If the jaw relationship itself is the problem, the options are more limited and may involve other approaches.
In practice, many patients have a combination of both. A moderate skeletal discrepancy may be partly compensated for by tooth movement, meaning that even in cases where the jaw relationship isn’t ideal, aligner treatment can still produce a meaningful improvement.
What Invisalign Can Do for Overbites
An overbite, strictly speaking, refers to how much the upper front teeth overlap vertically with the lower front teeth. A related term, overjet, refers to the horizontal projection of the upper teeth beyond the lower. Both are common presentations in the patients we assess, and both can often be improved with clear aligner treatment.
Dental deep bites, where the upper teeth cover too much of the lower teeth vertically, are an area where Invisalign has become increasingly capable. The technique involves a combination of reducing the curve along the lower teeth and using specific tooth movements to level the bite. In our experience, this is one of the more technically demanding movements for aligners, but the results in suitable cases are very good.
According to clinical descriptions of overbite, a normal range of vertical overlap is around one to two millimetres. Anything significantly beyond this, particularly where it causes gum trauma or difficulty biting, warrants assessment.
What Invisalign Can Do for Underbites
An underbite, where the lower teeth sit in front of the upper teeth, is less common but presents in a range of severities. Mild dental underbites, where a small number of teeth are in reverse position without a significant jaw discrepancy, can be addressed with aligners by moving the relevant teeth into a better relationship.
More pronounced underbites often have a skeletal component, particularly where the lower jaw is noticeably larger or more prominent than the upper. In these cases, Invisalign alone isn’t going to resolve the underlying cause. A combined approach, orthodontic treatment to position the teeth correctly for the jaw they’re in, followed by surgical correction of the jaw relationship, is sometimes the most appropriate route for significant skeletal underbites.
That said, not everyone with an underbite needs or wants surgical intervention. For patients where the bite function is acceptable and the concern is primarily aesthetic, a degree of improvement through tooth movement alone is often achievable and worth discussing.
Assessment: What We Look For
| Bite issue | Likely cause | Invisalign suitability | Notes |
|---|---|---|---|
| Mild to moderate overbite | Dental (tooth position) | Often suitable | Deep bite treatment techniques increasingly effective |
| Large overjet | Often mixed dental/skeletal | Partial improvement possible | Severity determines how much tooth movement can compensate |
| Mild underbite | Dental (reverse tooth position) | Often suitable | Depends on number of teeth affected |
| Moderate to severe underbite | Skeletal (jaw relationship) | Limited on its own | May benefit from combined orthodontic and surgical planning |
The Role of Digital Treatment Planning
Before committing to any aligner course, we use digital planning tools to simulate the projected tooth movements and assess whether the treatment goal is achievable within the scope of what aligners can do. This includes evaluating the bite from the start.
The simulation gives both the clinician and the patient a realistic picture of what the treatment can achieve. If the planned movements address the overbite or underbite sufficiently, we proceed. If the analysis shows the underlying cause is largely skeletal, we discuss this clearly rather than starting a treatment that won’t deliver what the patient is hoping for.
The British Orthodontic Society advises that a consultation with a specialist orthodontist is the appropriate starting point for any case involving complex bite issues, and we take the same view.
Being Realistic About Outcomes
Can Invisalign fix an overbite or underbite? Often yes, partially or fully, depending on the case. It won’t reposition jaws, and it can’t perform surgical correction. But for many patients who present with bite concerns, the problem is primarily one of tooth position, and that’s exactly what aligner treatment is designed to address.
Some patients find this reassuring. Others need more nuanced guidance after a detailed assessment. The right outcome for you depends on a proper clinical evaluation, not a general answer.
Discussing Your Options in West Byfleet
If you’re concerned about your bite and want to understand what treatment can realistically achieve, the starting point is a thorough assessment. We look at how your teeth meet, the relationship of your jaws, what’s driving the bite discrepancy, and what options are appropriate.
At Coniston Dental Practice in West Byfleet, we offer Invisalign assessments for patients across the Surrey area. Call us on 01932 343675 to arrange a consultation. We’ll give you a clear picture of what’s possible and, where necessary, be honest about the limits of what any single treatment approach can achieve.
