Underbite Orthodontics UK

Braces can correct an underbite when the problem is mainly dental, for example where the upper front teeth are tipped back and the lower ones forward, or where a mild skeletal discrepancy can be camouflaged by moving teeth within safe limits. Where the jaw relationship itself is the cause, braces alone cannot change bone position. Growing children may be treated with a protraction facemask or an upper removable appliance while jaw growth can still be influenced, while adults with a marked skeletal Class III usually need combined orthodontics and orthognathic surgery.

Clear aligners can treat mild dental underbites, particularly where the correction needed is tipping the upper front teeth forwards and the lower front teeth back, usually alongside Class III elastics attached to buttons or precision cuts. They are less predictable where substantial root movement, extraction space closure or heavy anchorage control is required, and those cases are generally handled with fixed braces, sometimes supported by temporary anchorage devices. Aligners cannot change jaw position at all, so a significant skeletal Class III still needs surgical assessment whichever appliance is used.

NHS orthodontic treatment is free for under-18s whose case meets the clinical threshold set by the Index of Orthodontic Treatment Need: dental health component grade 4 or 5, or grade 3 with an aesthetic component of 6 or above. An established underbite or reverse overjet usually scores within that range. Adults are essentially never eligible for routine NHS orthodontics, but where jaw surgery is clinically indicated, assessment and treatment can be provided through a hospital orthodontic and maxillofacial pathway after referral. Waiting times and local commissioning arrangements vary considerably.

It depends on whether the aim is to influence growth or to correct the result of it. Where the upper jaw is underdeveloped, interceptive treatment with a protraction facemask is most effective in the early mixed dentition, roughly ages seven to ten, because it relies on the sutures still being responsive. Milder underbites caused by tipped teeth can be addressed at almost any age. A genuinely skeletal underbite in a growing patient is usually monitored rather than treated definitively, because the lower jaw is often the last part of the face to finish growing and surgery is planned once growth is complete.

Many people live with a mild underbite without difficulty, so treatment is not automatic. Where it matters is function and wear. Front teeth meeting edge to edge or in reverse wear unevenly and can chip, chewing efficiency drops when the back teeth do not meet properly, and an asymmetric bite places uneven load on the jaw joints and muscles, which some people feel as fatigue or discomfort. In a growing child a skeletal underbite typically becomes more pronounced rather than less, which is the main argument for assessment early even if active treatment is deferred.

You will not be able to tell reliably by looking, and the distinction decides the treatment. A dental underbite is one where the jaws relate normally but the front teeth are tipped so the lower ones sit ahead, and braces or aligners can usually correct it. A skeletal underbite reflects the size or position of the jaws themselves. Orthodontists separate the two with a clinical assessment plus a lateral cephalometric radiograph, which measures the jaw relationship directly. It is also common to find a combination, where teeth have tipped to compensate for an underlying skeletal pattern and partly disguise it.