---
title: "Lip Repositioning Surgery for Gummy Smile UK"
url: https://virtualconsultant.online/guides/lip-repositioning-surgery-orthodontics-uk
description: "Lip repositioning surgery reduces gum showing from a hypermobile lip by 3 to 5mm — but the wrong cause means it will not fix a gummy smile."
updated: 2026-08-09T00:00:00Z
publisher: Virtual Consultant Online
---

Gummy Smile

Lip Repositioning

Cosmetic Orthodontics

# Lip Repositioning Surgery and Orthodontics: Treating a Gummy Smile

Lip repositioning surgery reduces gum showing when smiling by 3 to 5mm, but only works when a hypermobile upper lip is the actual cause — it will not fix a gummy smile caused by unerupted teeth, jaw growth, or gum overgrowth. A gummy smile affects around 10 percent of adults aged 20 to 30, and choosing the right treatment starts with identifying which of these causes applies to you. This guide explains when lip repositioning is appropriate, what the procedure involves, and when orthodontics or jaw surgery is the better route instead.

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## What is a gummy smile?

Excessive gingival display — the clinical term for a gummy smile — is defined as more than 3 to 4 mm of gum tissue visible below the upper lip when smiling. Most clinicians consider 2 mm or less to be aesthetically ideal. Beyond 4 mm, many patients begin to feel self-conscious. The threshold for seeking treatment is personal; some patients are bothered by 3 mm while others are not troubled by considerably more. What matters clinically is identifying the cause, because treatment depends entirely on the underlying aetiology.

## Causes of a gummy smile

The most common causes fall into four broad categories. Skeletal causes involve vertical maxillary excess — the upper jaw has grown too far downward — resulting in more tooth and gum exposure. Dental causes include teeth that have not fully erupted, leaving more gum tissue covering the crowns than expected, or short clinical crowns. Muscular causes involve a hypermobile upper lip: the lip rises higher than average during smiling, exposing gum that would otherwise be hidden. Gingival causes include gum overgrowth (gingival hyperplasia), sometimes linked to medication or genetics, where excess soft tissue obscures the full length of the clinical crown.

## Orthodontic correction options

Where the gummy smile has a dental or skeletal component, orthodontics may reduce the display significantly. Intrusion mechanics — using temporary anchorage devices or conventional fixed appliances — can move teeth upward into the bone, reducing the vertical height of gum visible. In skeletal cases with vertical maxillary excess, orthodontic preparation followed by Le Fort I osteotomy (a surgical procedure that impacts the upper jaw) is the definitive correction. Orthodontics alone rarely eliminates a gummy smile caused by jaw growth; it treats the dental relationship but the skeletal excess remains.

## When lip repositioning is appropriate

Lip repositioning surgery is most effective when the cause is a hypermobile upper lip — a lip that rises excessively during a full smile due to overactive elevator muscles and a short distance between the base of the nose and the top of the upper lip. In these cases, the teeth and gums themselves may be entirely normal. Surgery repositions the mucosa of the upper lip, limiting the amount of gum exposed when smiling without altering the teeth or jaw. It is not appropriate for skeletal causes, where it would be insufficient, or for gingival overgrowth, where crown lengthening is the correct approach.

## What the procedure involves

Lip repositioning involves removing a strip of mucosa — the soft tissue lining inside the upper lip — between the attached gingiva and the mucogingival junction. Sutures are placed in a way that limits the movement of the lip when smiling. The procedure is performed under local anaesthetic in a dental or oral surgery setting and typically takes 30 to 60 minutes. There is a healing period of several weeks during which swelling and restricted lip movement are expected.

## How much improvement can be expected?

Most studies report a reduction of 3 to 5 mm in gum exposure following lip repositioning surgery. For a patient showing 6 mm of gum, this would bring them into or close to the acceptable range. Results are meaningful but not always complete, and some patients undergo the procedure alongside gingival recontouring or crown lengthening to address residual gum display. Long-term studies suggest the improvement is largely maintained at five years, though some partial relapse is documented as the mucosal tissue gradually stretches.

## Combining with botulinum toxin

Botulinum toxin injections into the upper lip elevator muscles — particularly levator labii superioris alaeque nasi — have become a popular non-surgical option for mild hypermobile lip cases. The effect lasts 3 to 6 months and reduces lip elevation during smiling. Some clinicians use toxin as a trial to assess how much improvement the patient would find satisfactory before recommending surgery. It can also be used as an adjunct after lip repositioning if some residual elevation persists.

## Combining with orthognathic surgery for skeletal cases

Where vertical maxillary excess is the primary cause, lip repositioning alone would be inadequate. The correct treatment is Le Fort I maxillary impaction surgery combined with orthodontic preparation and finishing. This is a significant procedure requiring general anaesthesia and several weeks of recovery, but it addresses the root cause — the excess downward growth of the jaw — and can produce a dramatic improvement in facial aesthetics, gum exposure, and dental occlusion simultaneously. Orthodontic treatment typically takes 12 to 18 months before surgery and 6 to 12 months after.

## UK availability and cost

Lip repositioning surgery is available privately from specialist periodontists and oral surgeons in the UK. It is not available on the NHS for cosmetic indications. Costs typically range from £1,500 to £3,500 depending on the surgeon and the extent of the procedure. Botulinum toxin for gummy smile is widely available at dental clinics and costs £150 to £400 per treatment cycle. Orthognathic surgery for skeletal cases may be available on the NHS via the SCAN pathway if functional criteria and IOTN thresholds are met.

## Limitations and reversibility

Lip repositioning is not fully reversible — once mucosal tissue is removed, the anatomical relationship is permanently altered. Partial relapse can occur as the tissue adapts over time. The procedure does not change tooth position, tooth appearance, or jaw structure, so if these elements are also a concern, combined treatment planning is essential. Patients should have realistic expectations: the goal is meaningful reduction in gum display, not necessarily elimination of all visible gum, which may not be possible or desirable.

## Useful related pages

[Gummy Smile Treatment UK](https://virtualconsultant.online/guides/gummy-smile-orthodontic-treatment-uk)

[Jaw Surgery and Orthodontics](https://virtualconsultant.online/guides/jaw-surgery-orthodontics-uk)

[Orthognathic Surgery Referral UK](https://virtualconsultant.online/guides/orthognathic-surgery-referral-uk)

[Digital Smile Design UK](https://virtualconsultant.online/guides/digital-smile-design-uk)

[Realistic Expectations for Orthodontic Treatment](https://virtualconsultant.online/guides/orthodontic-realistic-expectations-uk)

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

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### Frequently Asked Questions

Is lip repositioning surgery painful?

The procedure is performed under local anaesthetic so you should not feel pain during the surgery. Afterwards, there is typically soreness, swelling, and restricted lip movement for two to four weeks. Most patients manage with over-the-counter analgesia. Full healing takes six to eight weeks.

Can orthodontics fix a gummy smile without surgery?

It depends on the cause. If the gummy smile is due to teeth that have not fully erupted, orthodontic intrusion or crown lengthening can help significantly. If the cause is a hypermobile lip, orthodontics will not address it. If the cause is skeletal, orthodontics can only camouflage it to a limited degree; jaw surgery is the definitive option.

How long does lip repositioning last?

Long-term studies suggest most of the improvement is still present at five years, so lip repositioning is best described as long-lasting rather than permanent. Some partial relapse is documented and expected: the mucosal tissue gradually stretches and the lip regains a little of its upward travel over time. How much varies between individuals, and the initial reduction — typically 3 to 5mm of gum display — is what any relapse works back from. The procedure is not reversible in the other direction, because mucosa has been removed. If some elevation returns, botulinum toxin into the lip elevator muscles is sometimes used as a top-up, though its effect only lasts 3 to 6 months per cycle.

Will lip repositioning affect my smile appearance otherwise?

The surgery is designed to limit the upward travel of the lip during smiling. It should not affect the shape of the lips at rest or the general appearance of the lower face. Some patients notice a slightly fuller upper lip after surgery as the tissue sits differently.

Does lip repositioning require orthodontic treatment first?

Not necessarily. If the teeth are well-aligned and the bite is stable, lip repositioning can be performed as a standalone procedure. However, if there are also dental concerns such as crowding or spacing, orthodontic treatment may be recommended first to optimise the final result before the soft tissue procedure.

How do I know if my gummy smile needs lip repositioning or something else?

A clinician needs to identify the underlying cause before recommending treatment, since a gummy smile can come from a hypermobile lip, unerupted teeth, gum overgrowth, or excess downward jaw growth, and each has a different correct treatment. Lip repositioning only helps the hypermobile lip cause; orthodontic intrusion or crown lengthening suits dental causes, and jaw surgery is needed for a genuine skeletal cause, so an accurate diagnosis is the essential first step.

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Citation details

Title Lip Repositioning Surgery for Gummy Smile UK

Publisher Virtual Consultant Online

Published 2024-06-01

Updated 2026-08-09

URL [https://staging.virtualconsultant.online/guides/lip-repositioning-surgery-orthodontics-uk](https://staging.virtualconsultant.online/guides/lip-repositioning-surgery-orthodontics-uk)