Wondering how to fix an overbite without surgery? You’re not alone — and you may have more options than you think. While surgery is sometimes mentioned early in conversations about overbite correction, the reality is that most cases — including many that seem severe — can be treated non-surgically with the right approach. At ACAOO, we correct overbites every day without an operating theatre.
What Is an Overbite?
An overbite occurs when your upper front teeth overlap your lower front teeth more than they should. A small overlap is completely normal — in fact, a healthy overbite sits between 1–3mm. It’s only when that overlap becomes excessive, typically beyond 4–5mm, that it’s classified as a problem requiring treatment.
You may have heard it called a “deep bite.” Left untreated, it tends to worsen over time and can cause:
- Jaw pain, stiffness, and TMJ (temporomandibular joint) issues
- Accelerated tooth wear and enamel erosion
- Difficulty chewing and biting
- Recurring headaches and earaches
- Increased risk of gum disease and cavities
- Speech difficulties
Overbites are caused by a mix of genetics, habits (like thumb-sucking or teeth grinding), and jaw development patterns. Whatever the cause, the important thing to know is that a deep overbite is treatable — and often without surgery.
| OVERBITE VS OVERJET — KNOW THE DIFFERENCE Overbite and overjet are two different conditions that patients often confuse. An overbite is a vertical overlap — your upper teeth cover too much of your lower teeth. An overjet is a horizontal protrusion — your upper teeth stick too far forward (“buck teeth”). Many patients have both simultaneously. See our companion guide: Overjet vs Overbite — One Tiny Word, Very Different Problems. |
Can an Overbite Be Fixed Without Surgery?
Yes — in the majority of cases, an overbite can be corrected without surgery. Orthognathic (jaw) surgery is generally reserved for the most extreme skeletal cases, where the jaw discrepancy is simply too large to be corrected by orthodontic appliances alone.
The challenge with traditional orthodontic approaches — standard braces or conventional clear aligners — is that they move teeth effectively but don’t always address the underlying jaw position that creates the deep overbite in the first place. This can limit how fully and how stably the bite is corrected, sometimes leaving patients with a result that looks improved but doesn’t function optimally long-term.
At ACAOO, our approach goes further.
The Smartee S8-SGTB: ACAOO’s Non-Surgical Solution
The centrepiece of ACAOO’s non-surgical overbite correction is the Smartee S8 Digital Twin Block (S8-SGTB) — a breakthrough aligner system that treats the overbite at both the dental and skeletal level simultaneously.
| WHAT MAKES THE SMARTEE S8-SGTB DIFFERENT Unlike standard clear aligners that only move teeth, the Smartee S8-SGTB uses mandibular repositioning technology to gently guide the lower jaw forward while simultaneously aligning the teeth. It combines the clinical power of a traditional Twin Block appliance with the discretion and precision of a modern clear aligner system. |
This dual-action approach is specifically designed for patients with Class II malocclusion — where the lower jaw sits too far back relative to the upper jaw. It works best for cases involving:
- Deep overbite — excessive vertical overlap of upper and lower teeth
- Pronounced overjet — upper teeth projecting significantly forward
- A deep Curve of Spee — excessive curvature of the lower dental arch
By treating both the teeth and the jaw position, the Smartee S8-SGTB achieves what standard aligners cannot: a stable, complete correction that addresses the true cause of the overbite — not just its appearance.
The system gradually repositions the lower jaw, improves overall bite alignment, reduces pressure on the jaw joints, and enhances facial balance — all without surgery, and all while remaining discreet during treatment.
Who Is a Good Candidate for Non-Surgical Overbite Treatment?
You may be a strong candidate for the Smartee S8-SGTB if:
- Your overbite is mild to moderate in severity
- Your lower jaw can be guided into a better position
- You prefer a non-invasive, non-surgical option
- You want a discreet alternative to traditional metal braces
- You are an adult with a fully developed jaw structure
- You have been told surgery may be needed, and want a specialist second opinion
Even complex cases may be suitable. Our AI-assisted assessment process gives us a precise, three-dimensional picture of your bite and jaw structure — allowing us to determine with confidence whether a non-surgical approach can achieve the outcome you’re looking for.
What Does Overbite Treatment at ACAOO Look Like?
From your first appointment to your final retainer, here is what you can expect:
- Digital Assessment — We use advanced 3D intraoral scanning and AI analysis to map your bite, jaw structure, and facial profile in precise detail — no messy impressions required.
- Personalised Treatment Plan — Based on your overbite severity, jaw anatomy, and facial profile, Dr. Gareth Ho creates a fully customised plan using the Smartee S8-SGTB and supporting clear aligners.
- Staged Jaw and Teeth Correction — The S8-SGTB works in calibrated stages to gently advance the lower jaw while the aligner system simultaneously straightens the teeth — both corrections happening in parallel.
- Retention — Once your overbite is corrected, we fit retainers to hold everything in its new, corrected position and prevent relapse — protecting your result long-term.
- Ongoing AI-Powered Monitoring — Using DentalMonitoring technology, our team tracks your progress remotely between visits — fewer appointments, smarter oversight, faster adjustments when needed.
Why Choose ACAOO for Overbite Treatment in Sydney?
The Australian Centre for AI Orthodontics and Orthopaedics is not a general dental practice. We are a specialist orthodontic centre — and that distinction matters when it comes to complex bite correction.
Dr. Gareth Ho has been treating overbites and complex Class II cases in Sydney for over 20 years. In 2025, he launched AI Orthodontics Australia to integrate the latest AI-powered diagnostic and monitoring tools into every treatment plan — giving ACAOO patients a level of precision that was simply unavailable a few years ago.
For patients who prefer complete discretion during treatment, we also offer lingual braces — placed on the inner surface of your teeth, invisible from the outside — as an alternative or complement to clear aligner treatment.
| A NOTE ON SEVERE OVERBITES Not every severe overbite requires surgery. Many cases that were historically referred for orthognathic surgery can now be treated non-surgically using the Smartee S8-SGTB, thanks to its ability to reposition the jaw without surgical intervention. If you’ve been told you need surgery, we encourage you to book a second opinion consultation with Dr. Ho before committing to any surgical pathway. |
| ACAOO · SYDNEY CBD · WORLD SQUARE Not sure if surgery is really necessary for your overbite? Book a consultation with Dr. Gareth Ho at our Sydney CBD clinic. We will give you an honest, AI-assisted assessment and explain exactly what is possible without surgery — specific to your bite, your jaw, and your goals. BOOK YOUR CONSULTATION → |
Frequently Asked Questions
How long does it take to fix an overbite without surgery?
Treatment time varies depending on the severity of your overbite and the complexity of your jaw position. Most non-surgical overbite corrections at ACAOO take between 12 and 24 months. Dr. Gareth Ho will give you a specific timeline after your initial 3D assessment, once we have a clear picture of your bite anatomy.
Can standard clear aligners like Invisalign fix a deep overbite?
For mild overbite cases, yes. However, for deep overbites involving jaw retrusion (Class II malocclusion), standard aligners are often not sufficient on their own — because they move teeth but don’t reposition the jaw. The Smartee S8-SGTB is designed precisely for these cases, combining jaw advancement with aligner treatment for a more complete and stable correction.
At what age should an overbite be treated?
Overbites can and should be assessed at any age. Children benefit from early intervention during growth phases when the jaw is still developing. However, adults can achieve excellent results too — the Smartee S8-SGTB is highly effective for adult patients with fully developed jaw structures. There is no ‘too late’ when it comes to overbite correction.
Is overbite treatment painful?
Most patients experience only mild pressure and discomfort when transitioning to new aligners — typically settling within a day or two. Compared to surgical correction or traditional fixed braces, this is a significantly more comfortable experience. Our team will guide you through what to expect at each stage of treatment.
Do I need surgery for a severe overbite?
Not necessarily. While some severe skeletal cases do require orthognathic surgery, many cases that appear severe on initial assessment can still be corrected using the Smartee S8-SGTB — depending on the individual’s jaw anatomy and growth potential. If you have been told surgery is your only option, we strongly encourage a specialist second opinion before proceeding.
What is the difference between an overbite and an overjet?
An overbite refers to the vertical overlap of upper teeth over lower teeth. An overjet refers to the horizontal projection of upper teeth beyond lower teeth — what many people call ‘buck teeth.’ Many patients have both conditions simultaneously, as they share the same underlying cause: a Class II jaw relationship. Both can be addressed with the Smartee S8-SGTB at ACAOO.
