Jaw Surgery and Orthodontics UK

NHS funding for orthognathic surgery requires that the case demonstrates significant functional impairment — difficulty chewing, swallowing, breathing, or speaking — not just aesthetic concerns. In practice, significant skeletal discrepancies almost always have functional components. Referral is typically from your orthodontist to an NHS oral and maxillofacial surgery department. Funding approval varies by Integrated Care Board. Cases are assessed against national clinical guidelines. Your orthodontist and oral surgeon will advise on NHS eligibility for your specific case.

The first week after jaw surgery involves significant swelling, bruising, discomfort, and fatigue. Eating is restricted to liquids and very soft foods for 6 weeks. Speech is affected initially as swelling restricts jaw movement. Most patients can return to office work within 2–3 weeks and feel broadly well within 4–6 weeks, though swelling continues to reduce for several months. Full bone healing takes 3–6 months, during which the post-surgical orthodontics are completed.

Pain is usually well-managed with prescription pain relief during the hospital stay and the first week at home. Most patients describe the initial recovery as uncomfortable rather than severely painful — the main difficulties are swelling, restricted diet, and fatigue rather than acute pain. The surgical cuts are made inside the mouth, so there are no external scars. Numbness (rather than pain) of the chin, lower lip, or upper teeth is common during healing and usually resolves over months.

Braces can camouflage mild skeletal discrepancies by tipping teeth to compensate — for example, tipping lower front teeth forward slightly to reduce the appearance of a mild underbite. This 'dental compensation' works for mild cases but has limits. If the skeletal discrepancy is significant (more than 4–5 mm of jaw mismatch), orthodontic camouflage produces a compromised result — teeth end up at poor angles, and bite function is not ideal. A joint assessment with both an orthodontist and oral surgeon is needed to determine whether camouflage or surgery is more appropriate for your case.

Orthognathic surgery must wait until jaw growth is complete — otherwise the jaw could continue to grow after surgery, undoing the correction. Growth completion is typically 17–18 for females and 18–21 for males, though this varies. Skeletal maturity is assessed using X-rays (hand/wrist or cervical vertebrae staging). In practice, most patients undergoing orthognathic surgery in the UK are 18–30, though it can be performed at any age once growth has stopped.

Most people take around two to four weeks away, though it varies with the procedure and the job. The first week is the most restrictive, with significant swelling, a liquid or very soft diet and limited energy. Swelling reduces markedly over the second and third weeks, and by three to four weeks most people can manage desk-based work or school with adjustments, particularly around eating. Physically demanding work and contact sport are usually excluded for considerably longer, often two to three months. Surgeons give a personalised estimate, and it is worth arranging flexibility in advance.