Gingivitis and Bleeding Gums

What Is Gingivitis?

When plaque — a soft, sticky film of bacteria — accumulates on the teeth and along the gumline, the body responds with an inflammatory reaction. The gum tissue becomes red, swollen, and fragile. This is plaque-induced gingivitis, and it is the most common form of gum disease encountered in dental practice. The gingival sulcus (the small groove where the gum meets the tooth) becomes irritated, and the tissue bleeds when disturbed by a toothbrush, floss, or even eating firm foods.

What makes gingivitis particularly important is that it is fully reversible. At this early stage, no permanent damage has occurred to the bone or connective tissue supporting the teeth. With professional cleaning and consistent daily oral hygiene, the gums can return to a healthy, pink, firm state. This distinguishes it clearly from periodontitis, where the inflammation has spread deeper and caused irreversible bone destruction.

Early gum disease is remarkably common. Studies suggest that over half of UK adults experience gingivitis at some point, with many unaware they have it because the condition is often painless in its initial stages. Recognising the early signs and acting promptly prevents the condition from progressing to a more serious, irreversible form of periodontal disease.

How Common Is Gum Disease in the UK?

Gum disease is one of the most prevalent oral health conditions in the United Kingdom, affecting people across all age groups. The scale of the problem is significant.

• Approximately 75% of UK adults experience some form of gum disease during their lifetime, making it one of the most widespread chronic conditions
• Mild to moderate gingivitis is nearly universal among adults, with the majority showing at least some signs of gingival inflammation on clinical examination
• 15 to 20% of middle-aged adults in the UK have severe periodontitis, the advanced and irreversible form of gum disease that leads to tooth loss
• Gum disease is the leading cause of adult tooth loss in the UK, ahead of dental decay, making early detection of gingivitis a priority
• Children are much less commonly affected, though poor oral hygiene habits established early can lead to gingivitis during adolescence and young adulthood
• NHS data confirms that bleeding gums are one of the top reasons patients seek dental advice, yet many more cases go unreported because patients assume it is normal

Gingivitis Symptoms

The signs of gingivitis can be subtle, particularly in the early stages. Many people with gum inflammation are completely unaware of the condition because it is often painless. Learning to recognise the symptoms early allows you to act before the disease progresses.

• Gums that bleed when brushing — blood on your toothbrush or in the sink after brushing is the most common early sign. You may also notice bleeding when flossing or eating hard foods like apples
• Red, swollen gums — healthy gums are pale pink and firm. Inflamed gums appear darker red, puffy, and may look shiny or engorged along the gumline
• Tender gums — the gum tissue may feel sore or sensitive when touched, particularly around areas of heavy plaque accumulation
• Bad breath (halitosis) — persistent unpleasant breath that does not improve with brushing often indicates bacterial buildup and gingival inflammation
• Metallic or unpleasant taste — a persistent bad or metallic taste in the mouth can accompany gum inflammation and bleeding
• Often painless — one of the most important things to understand is that gingivitis frequently causes no pain at all, meaning the signs can be easily overlooked until the condition advances

Gingivitis vs Periodontitis: What's the Difference?

Understanding the distinction between gingivitis and periodontitis is essential because it determines the treatment approach and the long-term outlook for your teeth.

Gingivitis (Early Stage)

• Inflammation is confined to the gum tissue only — no deeper structures are affected
• Presents as redness, swelling, and gingival bleeding during brushing or flossing
• No bone loss or tissue destruction has occurred
• Fully reversible with professional cleaning and improved oral hygiene

Periodontitis (Advanced Stage)

• Inflammation has spread beyond the gums to the supporting bone and connective tissue
• Gums pull away from the teeth, forming deepening pockets that trap more bacteria
• Irreversible bone loss occurs, weakening the foundation that holds the teeth in place
• Teeth may become loose, shift position, or require extraction in severe cases
• Damage is irreversible, but the condition can be managed and stabilised with ongoing periodontal care

What Causes Gingivitis and Bleeding Gums?

The primary cause of gingivitis is bacterial plaque, but several other factors increase your risk of developing gum inflammation or make existing disease worse. Understanding the gingivitis causes that apply to you helps guide both treatment and prevention.

• Poor oral hygiene — inadequate brushing allows plaque to accumulate along the gumline, triggering the inflammatory response that leads to gingival bleeding
• Improper brushing technique — brushing too hard can damage the gums, while brushing too softly or missing areas allows plaque to persist in critical zones
• Not cleaning between teeth — a toothbrush alone cleans only about 60% of tooth surfaces. Without interdental cleaning using floss or interdental brushes, plaque builds up between teeth where gum disease often starts
• Smoking — tobacco use significantly increases the risk of gum disease by reducing blood flow to the gums, impairing healing, and masking bleeding (smokers may bleed less despite having worse disease)
• Stress — particularly during demanding periods such as exams or lack of sleep, stress weakens the immune response and reduces the body's ability to fight plaque bacteria effectively
• Hormonal changes — puberty, pregnancy, menstruation, and menopause increase gum sensitivity and susceptibility to plaque-induced inflammation
• Certain medications — blood thinners increase bleeding tendency, while some medications reduce saliva flow or cause gum overgrowth, all of which contribute to periodontal inflammation
• Vitamin deficiencies — low levels of vitamin C and vitamin K can impair gum health and increase bleeding tendency
• Systemic conditions — diabetes, immunodeficiency conditions, and other chronic diseases reduce the body's resistance to infection and increase susceptibility to gingivitis

Acute Necrotising Ulcerative Gingivitis (ANUG)

ANUG is a more severe form of gum infection that requires prompt dental care. Unlike standard gingivitis, ANUG causes significant pain and distinctive symptoms that distinguish it from the milder, more common form of gum disease.

• Painful, bleeding gums — unlike standard gingivitis which is often painless, ANUG causes significant soreness and profuse gingival bleeding
• Crater-like ulcers — the gum tissue between teeth (interdental papillae) becomes destroyed, creating punched-out ulcers with a grey pseudomembrane
• Severe halitosis — an extremely unpleasant, distinctive smell and a horrible metallic taste in the mouth
• Possible fever and malaise — feeling generally unwell with swollen lymph nodes may accompany the oral symptoms

ANUG is strongly associated with stress, smoking, poor nutrition, immunodeficiency, and lack of sleep. It most commonly affects young adults, particularly during high-pressure periods such as examinations.

Treatment involves urgent dental care, gentle debridement of the affected areas, and often a course of antibiotics (typically metronidazole). If you experience these symptoms, contact your dental practice or call emergency dental services promptly.

Why Treat Gingivitis Early?

Acting on early gum disease is one of the most important things you can do for your long-term oral health. The consequences of delaying treatment become progressively more serious and more expensive to manage.

• Prevents progression to periodontitis — treating gingivitis stops the inflammation from spreading to the supporting bone, avoiding irreversible damage
• Avoids tooth loss — gum disease is the leading cause of adult tooth loss in the UK, and early treatment preserves your natural teeth
• More cost-effective — treating mild gingivitis with a professional clean costs a fraction of the treatment needed for advanced periodontitis
• Improves breath and taste — resolving gingival inflammation eliminates the bacterial buildup responsible for persistent halitosis and unpleasant taste
• Reduces systemic health risks — research links chronic gum disease to increased risk of cardiovascular disease, stroke, diabetes complications, and adverse pregnancy outcomes
• Preserves smile aesthetics — untreated gum disease causes gum recession, exposed roots, gaps between teeth, and discolouration that affect the appearance of your smile

Diagnosis and Assessment

Accurate diagnosis of gingivitis involves a thorough clinical assessment to determine the extent of the inflammation and identify any underlying risk factors. During a dental examination, your dentist will carry out several key assessments.

• Visual examination of the gums — assessing colour, shape, texture, and swelling to identify areas of inflammation and compare with healthy tissue
• Gentle periodontal probing — a calibrated probe is used to measure the depth of the gingival sulcus around each tooth and check for bleeding on probing, a key indicator of active inflammation
• Six-point pocket chart — recording pocket depths at six points around each tooth creates a detailed map of your periodontal health that serves as a baseline for monitoring
• Dental X-rays — radiographs may be taken to check bone levels around the teeth if periodontitis is suspected, helping distinguish between gingivitis and more advanced disease
• Oral hygiene assessment — evaluating your current brushing and interdental cleaning techniques to identify areas being missed or cleaned ineffectively
• Risk factor discussion — reviewing smoking habits, stress levels, medical history, medications, and other factors that influence periodontal health and treatment outcomes

Gingivitis Treatment Options

The good news is that gingivitis treatment is straightforward and highly effective when carried out early. Treatment focuses on removing the bacterial plaque and calculus (tartar) that cause the inflammation, then establishing a daily care routine to prevent recurrence. Our general dentistry team provides comprehensive bleeding gums treatment tailored to each patient's needs.

Professional Dental Cleaning (Scale and Polish)

For early gingivitis, a professional scale and polish is usually the only treatment needed. Your dentist or hygienist uses specialised instruments to remove plaque and hardened calculus (tartar) from above and below the gumline. Calculus cannot be removed by brushing alone — it requires professional instruments to break it away from the tooth surface.

The procedure is quick, usually taking 30 to 45 minutes, and is generally comfortable. A standard hygienist scale and polish in London typically costs from £85 per session. Most patients with mild gingivitis see a significant improvement in gum health within two to four weeks of professional cleaning combined with improved home care.

Deep Cleaning (Scaling and Root Planing)

For more established gingivitis or cases where early periodontitis is developing, a deeper cleaning may be recommended. Scaling and root planing involves cleaning below the gumline to remove bacteria, plaque, and calculus from the root surfaces of the teeth. The root surfaces are then smoothed (planed) to discourage further plaque attachment and promote gum reattachment.

This procedure may require local anaesthetic for comfort and is often carried out in two or more sessions, treating one or two quadrants (quarters) of the mouth at a time. Full mouth deep cleaning in London typically costs £400 to £700, or £200 to £400 per quadrant. Your dental hygienist will recommend the appropriate level of treatment based on your assessment findings.

Oral Hygiene Instruction

Professional cleaning addresses the current disease, but preventing recurrence depends on your daily home care routine. Your dental team will provide personalised instruction on:

• Correct brushing technique — using a soft-bristled toothbrush at a 45-degree angle to the gumline with gentle, circular movements
• Interdental cleaning — demonstration of the correct size and technique for floss, interdental brushes, or other aids to clean between your teeth daily
• Toothpaste selection — using a fluoride toothpaste containing 1350 to 1500ppm fluoride for optimal protection
• Timing of brushing — avoiding brushing immediately after acidic food or drink to protect softened enamel

Antimicrobial Mouthwashes

Chlorhexidine mouthwash may be recommended as a short-term adjunct to treatment. It is effective at reducing bacterial levels in the mouth and controlling bleeding, but it is not intended for long-term use as it can cause temporary staining and taste alteration.

Warm salt water rinses provide a simple, gentle home remedy to soothe inflamed gums. Dissolve half a teaspoon of salt in a glass of warm water and rinse gently for 30 seconds. Mouthwashes are a supplement to — not a substitute for — mechanical plaque removal through brushing and interdental cleaning.

Antibiotics (for ANUG or Severe Cases)

In cases of acute necrotising ulcerative gingivitis (ANUG) or severe gum infection, a short course of antibiotics may be prescribed. Metronidazole is the most commonly used antibiotic for this purpose, typically prescribed for three to five days. Alcohol must be strictly avoided during the course and for 48 hours afterwards. Once the acute infection is controlled, professional cleaning is carried out to address the underlying plaque and calculus.

Gingivitis Treatment Costs in London

Understanding the costs involved helps you plan your care. The table below provides typical London price ranges for gingivitis and bleeding gums treatment. For our specific fee structure, visit our treatment fees page.

Several factors influence the final cost of your treatment:

• Severity of gum disease — mild gingivitis requires fewer sessions than established or advanced disease
• Number of sessions required — deep cleaning may be spread over two to four appointments depending on the extent of calculus deposits
• Level of care — routine hygienist maintenance is priced differently from intensive periodontal therapy
• Insurance coverage — most dental insurance plans cover periodontal treatment, typically between 50% and 80% of the cost depending on your policy

Prevention of Gingivitis

Preventing gingivitis — or stopping it from returning after treatment — depends on consistent daily habits and regular professional care. The following steps are the foundation of good periodontal health.

• Brush twice daily for two minutes using a fluoride toothpaste (1350 to 1500ppm fluoride) with a soft-bristled toothbrush, paying particular attention to the gumline
• Clean between teeth daily using interdental brushes or floss to remove plaque from the spaces your toothbrush cannot reach
• Spit, don't rinse after brushing to retain the protective fluoride coating on your teeth and gums
• Attend regular dental check-ups every six to twelve months, or as recommended by your dental team, for professional monitoring and cleaning
• Book professional cleaning as recommended — regular oral prophylaxis removes calculus deposits before they can cause gum inflammation
• Maintain a healthy diet — limit sugary foods and drinks, choose tooth-friendly snacks, and ensure adequate vitamin C and vitamin K intake
• Avoid smoking — stopping smoking is one of the most significant steps you can take to improve your gum health and treatment outcomes
• Manage stress — chronic stress impairs immune function and increases susceptibility to gum inflammation and ANUG

When to See a Dentist About Bleeding Gums

If you experience any of the following, it is important to seek a professional assessment:

• Your gums bleed when brushing, flossing, or eating
• Your gums are red, swollen, or painful to touch
• You have persistent bad breath or a bad taste that does not improve with brushing
• Your gums appear to be pulling away from your teeth
• Any teeth feel loose or have changed position
• You have not had a dental check-up for two years (or one year if under 18)

For urgent symptoms such as severe pain, profuse bleeding, crater-like ulcers between teeth, or very swollen gums with fever, contact your dental practice urgently or call NHS 111 for guidance.

Our dental team at St Paul's Medical & Dental provides comprehensive assessment and treatment for gingivitis and bleeding gums. Book a consultation to have your gum health evaluated and receive a personalised care plan.

Frequently Asked Questions About Gingivitis and Bleeding Gums