Gum Disease (Gingivitis and Periodontitis)
A guide to bleeding gums, periodontal health and oral wellness.
Bleeding, swollen or receding gums are common, but they should not simply be ignored. Gum disease can be silent and painless, so the amount of discomfort does not reliably show how much support the teeth have lost.
The encouraging part is that gingivitis can usually be reversed and periodontitis can often be stabilised. The best results come from professional care and meticulous daily plaque control working together.
What matters most
1. Dental plaque is the main cause of gum inflammation; smoking, diabetes and individual susceptibility can increase risk.
2. Gingivitis affects only the gums and is reversible. Periodontitis also damages the supporting bone; lost support does not grow back, but the disease can often be brought under control.
3. Bleeding during brushing is a sign to improve cleaning, not a reason to avoid the area.
4. Treatment is a partnership: daily brushing and interdental cleaning are as important as professional treatment and long-term maintenance.
Understanding gum disease
Plaque is the sticky bacterial biofilm that continually forms around teeth and beneath the gum edge. If it is not disrupted effectively, the gums become inflamed. This early stage is called gingivitis.
In a susceptible person, inflammation can extend into the tissues and bone that support the teeth. This is periodontitis. The gum may detach from the tooth and form a deeper pocket that is harder to clean, allowing the condition to progress unless it is treated and maintained.
What you might notice
Gum disease is not always painful. You may notice one or more of the following:
bleeding when brushing, flossing or using interdental brushes
red, puffy, tender or shiny gums
persistent, bad breath or an unpleasant taste
gum recession, teeth appearing longer or new sensitivity at the gum line
spaces developing, teeth drifting or becoming mobile
pus, a localised swelling or a gum abscess
Why it happens and who is at greater risk
Smoking or vaping tobacco can greatly increase risk and may mask bleeding, so the gums can look better than the disease really is.
Diabetes, especially when poorly controlled, and periodontal inflammation can influence one another.
Genetic susceptibility, if members of your direct family have had problems with gum disease, you are at greater risk.
Crowding, overhanging restorations, calculus and poorly contoured dental work can make plaque control more difficult.
Previous periodontitis means lifelong maintenance is important, even after the disease has been stabilised.
A useful distinction
Healthy gums do not routinely bleed. However, bleeding often increases briefly when an inflamed area is first cleaned properly. Continue gentle, thorough cleaning and ask for help with technique rather than stopping.
What you can do now
The aim is to disturb plaque every day and reduce the factors that make inflammation harder to control.
Brush twice daily. Use a fluoride toothpaste and clean carefully along the gum edge for about two minutes. An electric toothbrush is recommended.
Clean between the teeth every day. Use correctly sized interdental brushes where they fit; floss or another suitable aid may be needed in very tight spaces. The hygienist will recommend the correct sizes.
Spit, but do not rinse straight away. Leaving a film of fluoride toothpaste on the teeth improves protection against decay, which is particularly useful where roots are exposed.
Do not avoid a bleeding site. Clean it gently and consistently. If bleeding persists despite good technique, arrange a review.
Stop smoking. Stopping is one of the most valuable changes for periodontal health and improves the response to treatment. NHS stop-smoking support can help.
Support diabetes control. Attend medical reviews and tell us if your diabetic control or medication changes.
Keep maintenance appointments. Periodontitis can recur without ongoing monitoring and professional care, even when everything feels comfortable.
Keep it practical
Choose a routine you can repeat every day. A small interdental brush that fits the space and is actually used is more valuable than an elaborate routine that is abandoned.
How we can help
Our hygienists will assess both current inflammation and the support around each tooth, then explain whether the pattern is gingivitis, periodontitis or another condition.
Assessment
periodontal probing to record bleeding, pocket depths, recession and tooth mobility
assessment of plaque levels, cleaning access and risk factors
appropriate dental radiographs to evaluate bone support and other disease
a diagnosis, risk discussion and agreed treatment goals recorded in plain language
Treatment options
personalised brushing and interdental-cleaning coaching
professional removal of plaque and calculus above and, when needed, beneath the gum edge
non-surgical periodontal treatment for deeper pockets, usually delivered in stages
review after healing; selected persistent sites may need further treatment or specialist referral
supportive periodontal maintenance at an interval based on your risk and response
What success looks like
Successful treatment means low inflammation, good daily plaque control and a stable pattern over time. It does not mean that previously lost bone has automatically returned.
When not to wait for a routine appointment
Please request prompt dental advice if you develop:
- Rapidly increasing swelling, pus, fever or feeling systemically unwell
- A tooth that suddenly becomes much more mobile or painful to bite on
- Swelling that affects swallowing, breathing, speech or the eye area — this needs emergency assessment
- Persistent bleeding or ulceration that is unusual for you
For severe facial or neck swelling, breathing difficulty or difficulty swallowing, call 999 or attend A&E.
Trusted information and next steps
These resources support the advice in this guide. They are useful for further reading but do not replace an examination or advice tailored to your health.
NHS: Gum disease: Patient overview and self-care.
SDCEP: Periodontal care: Current UK professional guidance.
BSP: Understanding the importance of gum health: Gum health resources for patients.
NHS gum disease guidance
Scan for NHS information about symptoms, prevention, dental treatment and when to seek help. Open the trusted patient resource
The main message
Gum disease is manageable, but it is not a one-off cleaning problem. The long-term goal is a mouth that you can keep clean comfortably, with inflammation and risk factors controlled.
If your gums continue to bleed, teeth are changing position or you have previously been treated for periodontitis, please arrange a review even if there is little or no pain.
Clinical basis: NHS: Gum disease, SDCEP: Periodontal care , BSP UK Version of the S3 Treatment Guidelines for Periodontitisand Delivering Better Oral Health. General information only; this guide cannot diagnose your symptoms or replace an individual assessment. Reviewed by Dr Jordan Frankgate, July 2026.
