Swollen Gums
Causes, Symptoms & Treatment
Swollen gums are a common dental concern often linked to inflammation. The gums may appear enlarged, red or tender — affecting a small area or multiple regions of the mouth — and may be accompanied by bleeding or discomfort. A professional dental assessment is important to identify the cause and determine appropriate management.
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Understanding the Concern
What Are Swollen Gums?
Swelling of the gums typically indicates inflammation within the gum tissue. It is most often the body's response to bacterial plaque along the gum line, though it may also arise from infection, mechanical irritation or other oral health conditions.
Inflamed gums tend to become sensitive and prone to bleeding, particularly during brushing or flossing. They may appear redder, puffier or more tender than healthy gum tissue — which usually looks firm, pale pink and stippled in texture.
The severity can vary considerably — from mild, transient irritation around a specific area to more noticeable generalised swelling across larger regions of the mouth. The duration and pattern of symptoms are important diagnostic indicators.
A clinical evaluation — including assessment of gum health, pocket depths, plaque levels and any contributing factors — helps determine the underlying cause and guide appropriate management.
Symptoms & Warning Signs
Red, swollen or enlarged gums
Gums that appear puffier, darker red or more prominent than usual — often one of the first visible indicators of inflammation.
Tenderness or discomfort
Soreness when brushing, eating or touching the gums — particularly in localised areas of swelling.
Bleeding when brushing or flossing
Gums that bleed easily during oral care or spontaneously — a recognised sign of gum inflammation that should not be ignored.
Bad breath or unpleasant taste
Ongoing halitosis or a persistent unpleasant taste can accompany gum inflammation, particularly where bacteria are accumulating within gum pockets.
Gum sensitivity
Increased sensitivity to brushing, temperature or certain foods — reflecting inflammation of the gum tissues.
Changes in gum shape or appearance
Gums that look different from usual — whether in colour, contour or texture — may indicate underlying inflammation or disease requiring clinical evaluation.
Symptoms vary depending on the underlying cause. Persistent or worsening gum swelling warrants professional dental assessment.
Contributing Factors
Common Causes of Swollen Gums
Gum swelling can arise from a variety of dental and general health factors. Multiple contributing causes may be present simultaneously, and identifying these is a key part of management.
Gingivitis (early gum disease)
The early, reversible stage of gum disease is one of the most common causes of swollen gums. Bacterial plaque along the gum line triggers an inflammatory response, leading to redness, swelling and bleeding.
Periodontitis (advanced gum disease)
In more advanced cases, gum disease can involve the bone and supporting tissues around the teeth. This may present with persistent swelling, gum recession and deepening pockets between the gums and teeth.
Plaque and tartar build-up
Accumulated plaque that hardens into tartar along the gum line provides a constant source of irritation and bacteria — contributing to ongoing gum inflammation and swelling that is difficult to manage without professional cleaning.
Food trapped between teeth
Food debris wedged between teeth or below the gum line can cause localised inflammation and swelling. This is often resolved with careful cleaning, though persistent trapping may indicate an underlying issue that requires assessment.
Irritation from dental appliances or restorations
Ill-fitting dentures, orthodontic appliances, rough filling edges or poorly contoured crowns can irritate the gums and contribute to localised swelling. Adjustment or replacement may be recommended following assessment.
Hormonal changes
Fluctuations in hormone levels — during puberty, pregnancy, menstruation or menopause — can increase the sensitivity of gum tissues to plaque, making swelling and bleeding more likely during these times.
Why It Matters
Potential Risks if Not Addressed
When swollen gums are left unassessed, the underlying cause may progress — most commonly from early, reversible gingivitis towards more established gum disease. Early intervention is typically more effective than management of advanced disease.
As inflammation persists, discomfort and bleeding may increase, and the gums may begin to recede. Gum recession exposes more of the tooth surface, which can affect appearance, cause sensitivity and make cleaning more difficult around exposed areas.
In advanced cases, ongoing inflammation can affect the supporting structures of the teeth — including the bone that anchors them. This may eventually compromise tooth stability and require more complex treatment. Addressing gum swelling at an earlier stage helps preserve long-term gum and tooth health.
Your Options
Treatment and Management Options
Treatment depends on clinical assessment and the underlying cause of your symptoms. Management varies based on diagnosis, and a personalised approach is recommended following professional examination.
Professional Cleaning
Thorough removal of plaque and tartar from tooth surfaces above and below the gum line — targeting the bacterial deposits that drive gum inflammation.
Learn MoreGum Disease Treatment
Assessment and management of gingivitis or periodontitis — including scaling, root planing and ongoing periodontal maintenance tailored to severity.
Learn MoreImproved Oral Hygiene
Tailored guidance on brushing technique, interdental cleaning and additional tools such as interdental brushes or water flossers to optimise daily care.
Adjustment of Dental Appliances
Where appliances, restorations or dentures are contributing to gum irritation, adjustment or replacement may be recommended to reduce ongoing inflammation.
Learn MoreRegular Dental Check-Ups
Ongoing monitoring of gum health with scheduled examinations — allowing early detection of any changes and adjustment of the management plan as needed.
Learn MorePreventive Care
Personalised preventive advice including dietary guidance, smoking cessation support and lifestyle factors that influence gum health.
Learn MoreYour First Step
Importance of Professional Dental Assessment
Swollen gums can indicate a range of underlying oral health issues — from early gum inflammation to more established gum disease, or factors such as dental appliance irritation or hormonal influences. Professional examination helps identify the specific cause and determine the severity.
The examination also allows assessment of preventive and treatment options. Where gum swelling is localised and mild, management may be straightforward. In more extensive or persistent cases, a more comprehensive approach may be required.
Treatment planning is tailored to individual needs. Early assessment may help prevent progression, support more conservative management and improve long-term outcomes — helping to maintain healthy gums and supporting structures.
What to Expect
- 1Discussion of your symptoms — including how long gum swelling has been present, any associated bleeding or discomfort, and your current oral hygiene routine
- 2Review of your dental and medical history, current medications and any relevant factors such as hormonal changes or recent treatment
- 3Clinical examination of the gums, teeth and soft tissues — including assessment of inflammation, bleeding, recession and pocket depths
- 4Plaque and tartar assessment to identify areas of bacterial accumulation contributing to the swelling
- 5Discussion of findings and the most likely cause — with clear explanation of whether the issue is related to gum disease, irritation or other factors
- 6Personalised management plan — which may include professional cleaning, periodontal treatment, adjustment of appliances or tailored preventive advice
Two Convenient Locations
Visit Us in Central London
Assessment and treatment planning for swollen gums and other dental concerns are available at our London clinic, where professional evaluation can help determine appropriate care options.
South Kensington
Now Open20 Old Brompton Road, South Kensington, London SW7 3DL
Mon & Wed: 9 am – 6 pm
Tue & Thu: 9 am – 8 pm
Fri: 9 am – 5 pm
Sat & Sun: 10 am – 4 pm
1 min from South Kensington tube (District, Circle & Piccadilly)
City of London
Opening May 20265 Ave Maria Lane, City of London, London EC4M 7AQ
Mon – Fri: 8 am – 8 pm
Sat & Sun: Closed
3 min from St Paul's tube (Central line) · 5 min from Blackfriars
Common Questions
Swollen Gums FAQ
Your Dental Team
Experienced Dentists & Hygienists
All our clinicians are GDC registered. Our hygienists specialise in periodontal care and professional cleaning, working alongside our dentists to manage gum concerns effectively.
Jack Button
Dental Hygienist
GDC: 244367
Laila Alhussein
Dental Hygienist
GDC: 328882
Dr. Yasha Y Shirazi
Principal Dentist & Clinical Director
GDC: 195843
Dr. Reza Davari
Dentist
GDC: 302422
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Our South Kensington clinic is regulated by the Care Quality Commission (CQC) and all our clinicians are registered with the General Dental Council (GDC).
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Assessment for Swollen Gums
Experiencing Swollen or Inflamed Gums?
If you are experiencing swollen or inflamed gums, a professional dental assessment can help identify the cause and determine appropriate treatment options based on your individual needs.
