Overbite is one of the more commonly misunderstood orthodontic conditions — and one of the more common reasons people ask whether Invisalign is the right treatment for them.
The short answer is that Invisalign can correct many overbites, but it’s not a universal solution for every situation. How well it works depends on what’s actually causing the overbite, how deep it is, and what other dental factors are involved. Understanding the condition a little better makes it easier to have a useful conversation with your dentist about your options. The clinical definition of overbite refers to the vertical overlap of the upper front teeth over the lower ones, and a degree of overlap is normal and expected in a healthy bite.
What Is an Overbite, Exactly?
Almost everyone has some vertical overlap between their upper and lower front teeth. That’s normal. The problems start when the overlap is excessive — typically when the upper teeth cover more than about a third to a half of the lower teeth when biting down. At that point, it’s referred to as a deep bite or deep overbite.
A deep overbite can cause wear on the lower front teeth. Over time, the edges of those teeth grind against the backs of the uppers, which shortens them. It can also cause gum problems if the lower teeth are biting into the roof of the mouth, and in some cases it contributes to jaw discomfort.
Not all of this is immediately obvious to the person experiencing it. In our experience, many patients with a significant overbite have simply got used to the way their bite feels and don’t realise it’s not quite right until it’s pointed out on examination.
How Invisalign Addresses an Overbite
The typical approach with Invisalign overbite treatment involves a combination of two movements: intruding the upper front teeth (pushing them slightly upward into the jaw) and, in many cases, extruding the back teeth (encouraging the molars to erupt slightly). Together, these changes reduce the depth of the overlap and bring the bite into a healthier position.
This works. But it does require careful planning and consistent aligner wear. The movements involved are more technically demanding than simply straightening crowded front teeth, which is why an experienced practitioner matters more than usual when overbite correction is part of the treatment plan.
Roughly seven in ten patients with a moderate overbite can achieve a meaningful improvement through Invisalign alone. The remainder may need adjuncts — small attachments bonded to the teeth that give the aligners more leverage — or a different approach altogether.
Dental Overbite vs Skeletal Overbite
This is the most important distinction to understand. A dental overbite is one where the teeth themselves are positioned incorrectly — the upper front teeth have erupted too far forward or downward, or the bite hasn’t developed evenly. A skeletal overbite is one where the jaw bones themselves are the underlying cause.
Invisalign can address dental overbites effectively. Skeletal overbites are different.
When the jaw structure is the primary cause, aligners can improve the appearance of the bite to some degree, but they’re working around a structural issue rather than resolving it. Severe skeletal cases may require orthognathic surgery (jaw surgery) alongside orthodontic treatment. That’s a significant undertaking, and it’s not one that Invisalign alone can replace.
| Overbite Type | Cause | Invisalign Suitable? | Notes |
|---|---|---|---|
| Mild dental overbite | Tooth position | Yes | Good candidate for Invisalign |
| Moderate dental overbite | Tooth position | Often yes | May need attachments for better control |
| Severe dental overbite | Tooth position | Sometimes | Fixed braces may be more predictable |
| Mild skeletal overbite | Jaw structure | Partially | Camouflage treatment may be possible |
| Severe skeletal overbite | Jaw structure | Limited | Surgery usually required for full correction |
What About Attachments?
Attachments are small tooth-coloured composite bumps that your dentist bonds onto specific teeth. They act like handles, giving the aligner more grip and allowing it to produce movements that would be difficult with the smooth plastic surface alone. For overbite correction, they’re commonly placed on the back teeth to help with the extrusion component of the treatment.
They’re not visible from a normal conversational distance, and they’re removed at the end of treatment without any damage to the tooth. But they do change the look of the aligners slightly — they’re not quite as invisible as they would be without attachments. That’s worth knowing before you start.
We Had a Patient Who…
We had a patient who came in specifically worried about his overbite. He was in his early forties, and a previous dentist had mentioned his bite was “quite deep” without really explaining what that meant or what could be done about it. He’d carried that comment around for a couple of years before booking an appointment with us. On examination, his vertical overlap was around 6 millimetres — well into the deep overbite range. His cause was dental rather than skeletal, which was the key piece of information. We planned a full Invisalign course with attachments on his upper and lower premolars, and his overbite reduced to just under 2 millimetres over approximately 16 months. He was, to be fair, a model patient in terms of wear time, which made a real difference to the result.
What to Expect from the Assessment
If you come in wondering whether Invisalign can fix your overbite, the first thing we’ll do is properly assess the depth of the overlap and its cause. That usually means looking at X-rays and photographs, and often taking a digital scan. You’ll find articles online suggesting you can gauge the severity yourself by looking in the mirror. In our experience, that’s not always right — the angle of self-assessment makes it genuinely difficult to judge vertical overlap accurately, and what looks like a minor issue sometimes isn’t.
The assessment also looks at your overall dental health. Gum disease and significant tooth wear need to be addressed before any orthodontic treatment starts. It’s not a matter of being overly cautious — it’s that moving teeth through compromised bone or gum tissue causes more harm than good.
After Treatment: Retention
This part is easy to underestimate. Once the overbite has been corrected, retainers are essential. Without them, teeth tend to drift back toward their original positions. This is true for all orthodontic results, but it’s particularly relevant for overbite correction because the bite has a natural tendency to deepen again over time if left unsupported.
In our experience, patients who wear their retainers consistently maintain their results well. Those who don’t tend to notice gradual changes within a year or maybe eighteen months. The retainer phase isn’t optional — it’s the part that makes the rest of the treatment last.
If you’re wondering whether your overbite is something Invisalign could help with, the best way to find out is a proper assessment. At Westcliff Dental Practice we’re happy to take a thorough look and give you a clear picture of what’s realistic. Call us on 01702 344 500 to get started.
