Deep Bite Treatment Options

Why deep bite matters clinically

A deep bite (increased overbite) is where the upper front teeth overlap the lower front teeth vertically by more than the normal 2–4mm. Mild deep bites are common and often require no treatment. More significant deep bites can cause: the lower front teeth to bite into the gum behind the upper front teeth (traumatic overbite); upper front teeth hitting the lower gum line; accelerated wear of lower front teeth; and in severe skeletal cases, jaw joint discomfort. The clinical significance depends on the depth of the bite, the direction of overbite (dental or skeletal), and whether any traumatic contact is occurring.

Dental vs skeletal deep bite

A dental deep bite results primarily from tooth position — the upper front teeth are tipped forward, the lower front teeth are over-erupted, or the back teeth are under-erupted. This is the most common type and is generally manageable with orthodontic treatment alone. A skeletal deep bite involves the underlying jaw bones — the mandible (lower jaw) may be more horizontally positioned, leading to a structural tendency toward deep bite that requires careful mechanical management and can relapse after treatment if not retained diligently. A cephalometric X-ray is required to distinguish these cases.

Treatment options for deep bite

Fixed braces are the most commonly used appliance for deep bite correction. The archwire is shaped to level the curve of Spee (the natural curve of the bite) by intruding the upper and lower front teeth and extruding the back teeth — this opens the bite vertically. Clear aligners can address dental deep bites using bite ramps (small built-in acrylic pads on the upper front tray that prop the bite open and allow the back teeth to erupt slightly). Aligners are less reliable for severe or skeletal deep bites. Functional appliances (in growing teenagers) can redirect jaw growth to reduce skeletal deep bite tendency.

Ceramic braces and deep bite: a caution

Deep overbite presents a specific consideration for ceramic braces. If the lower front teeth make contact with the ceramic brackets on the upper front teeth when biting, the ceramic material can fracture the enamel of the lower teeth or cause the ceramic bracket itself to shatter. Orthodontists commonly avoid placing ceramic brackets on the upper front teeth in deep bite cases until the bite has been partially opened, or use metal brackets in the affected zone. This is not a reason to avoid treatment — it is a technique consideration your clinician will manage.

NHS eligibility for deep bite treatment

Deep bite in under-18s may qualify for NHS orthodontic treatment when it meets IOTN Grade 4 or 5 — traumatic overbite contact commonly scores at this level. NHS treatment is free for eligible patients through registered NHS orthodontic practices. Waiting lists in England are typically 2–3 years. Adults are not routinely eligible for NHS treatment.

Retention after deep bite correction

Deep bite cases carry a meaningful relapse risk, particularly for skeletal cases and cases where the bite opening relied on back tooth eruption. Standard retention (fixed wires behind upper and lower front teeth plus removable night retainers) is important. For patients with skeletal deep bite tendency, long-term retainer compliance is especially important as the underlying jaw relationship continues to exert pressure on tooth position.

Useful related pages

This guide is for general information only. It is not a diagnosis, treatment plan, or substitute for advice from a registered dentist or orthodontist.