A small raised bump
Usually on the outer gum near the root of a tooth, yellow or white at the tip and red around it.
A small bump on the gum that comes and goes, sometimes with a salty taste, is usually a drainage point for an infection deeper down. It often does not hurt, which is why it gets ignored.
If the nearby tooth has had a root canal or a knock, mention it when you book.
A gum boil is a small pimple-like bump on the gum, usually where pus from an infection drains out through a narrow channel called a sinus tract. The source is most often the root tip of a tooth whose nerve has died, or a deep gum pocket. Because the pus escapes, it often does not hurt, but the infection remains. At Creative Arts in Dubai an X-ray finds the source before treatment is advised.
Who treats you here Dr. Duaa Ameen General Dentist · Dr. Taban Ameen Dentist
Every dentist’s licence can be checked on the DHA Sheryan medical directory.
Most gum boils share a few features that set them apart from an ordinary mouth ulcer.
Usually on the outer gum near the root of a tooth, yellow or white at the tip and red around it.
The bump may shrink after it drains and then return days or weeks later in the same spot, sometimes for months.
When it drains you may notice a salty, bitter or unpleasant taste, or bad breath that brushing does not fix.
Many people feel nothing at all; some notice that a nearby tooth feels slightly different when they bite.
Pain from a dental infection comes mainly from pressure: pus building up in a closed space with nowhere to go. A gum boil forms when the infection has found an escape route. Pus tracks from the source, usually the tip of a root or the bottom of a gum pocket, through the bone and out through the gum, where it forms the small bump. As long as it can drain, the pressure stays low and so does the pain.
That is reassuring in the short term and misleading in the long term. The infection is still active, and at the root tip it is slowly destroying bone. If the channel blocks, pressure can build quickly and a bump that never hurt can turn into a painful, swollen tooth abscess.
Several bumps appear on the gums; an examination tells them apart.
| What it is | What you notice | What it usually needs | |
|---|---|---|---|
| Gum boil | A draining channel from an infection at a root tip or in a pocket | Small bump that comes and goes, salty taste, little pain | X-ray and treatment of the source tooth or pocket |
| Acute tooth abscess | Pus trapped at the root tip without an outlet | Throbbing pain, tooth tender to bite, swelling | Prompt drainage and treatment of the tooth |
| Gum (periodontal) abscess | Infection inside a deep gum pocket | Swollen, tender gum beside a tooth, sometimes a loose tooth | Cleaning of the pocket and gum treatment |
| Mouth ulcer | A break in the lining of the mouth | Painful, shallow sore with a white or yellow base; heals within about two weeks | Usually self-care; see mouth ulcers |
Any sore or lump in the mouth that has not healed within two weeks should be examined, whatever it looks like.
A gum boil is a sign, not a diagnosis, so the real question is where the infection is coming from. The common sources are:
The boil does not always sit directly over the tooth that causes it; the channel can track sideways. That is why the source is confirmed with X-rays and tests rather than guessed from where the bump is.
The aim is to find which tooth or pocket the infection comes from, because that decides the treatment.
How long the bump has been there, past treatment on nearby teeth, and a look at the teeth, fillings, crowns and gums.
Visit 1To see the bone around the roots, an infection at a root tip, the quality of any previous root canal and bone loss from gum disease.
Visit 1Where the source is unclear, a fine, flexible marker can be gently placed into the opening and an X-ray taken to show where the channel leads.
Visit 1Response to cold, tenderness to tapping and the depth of the gum pockets around nearby teeth help separate a nerve problem from a gum problem.
Visit 1Which tooth is responsible, the options for treating it, including the conservative ones, and what each involves.
Before treatmentThe boil itself needs no separate treatment; it usually heals once the source is dealt with.
| Treatment | When it fits | What to expect |
|---|---|---|
| Root canal treatment | A tooth whose nerve has died and which can be restored | The infected pulp is removed and the canals cleaned and sealed, usually in one or two visits; the boil typically settles in the following weeks |
| Root canal retreatment | A previously treated tooth that has become reinfected | The old filling material is removed, the canals cleaned again and resealed; a new crown may be needed |
| Gum treatment | Infection coming from a deep gum pocket | Cleaning of the pocket under local anaesthetic, then gum care and review; see deep cleaning |
| Surgery at the root tip | Infection that persists after root canal treatment and cannot be reached through the tooth | May be considered in selected cases; our apicoectomy guide explains it |
| Extraction | A tooth that is cracked through the root, too broken down or not worth saving | The tooth is removed and the infection drains; replacement options are discussed afterwards |
| Antibiotics | Only when infection is spreading, with swelling or fever | They do not cure a gum boil on their own, because they cannot reach the source inside the tooth |
Root canal treatment at Creative Arts is carried out with a dental microscope by Dr. Marina Antoniuk and Dr. Julia; our guide to signs you need a root canal explains the other warning signs.
you have swelling of the face or jaw, especially with a fever; the swelling is spreading towards the eye or down the neck; you find it hard to swallow, breathe or open your mouth; or you feel generally unwell. These need a hospital emergency department straight away. For a painful, swelling gum or tooth without these signs, contact the clinic, which is open daily from 10:00 to 20:00 but does not offer a 24-hour service.
Until the source is treated, a few simple steps help.
Clinical statements on this page are consistent with these independent sources. They describe averages from studies, not a promise for any one patient.
A gum boil can come and go for weeks or months, shrinking after it drains and then reappearing in the same place. That pattern means the infection behind it is still there. Once the source tooth or gum pocket is treated, the boil usually settles within a few weeks.
The bump may disappear for a time, but the infection causing it does not heal by itself, because it comes from inside a tooth or a deep gum pocket that the body cannot clean. Left untreated, it can slowly damage the bone around the root or flare into a painful abscess, so it is worth having it examined.
A gum boil that does not hurt is not usually an emergency, but it should be examined soon rather than left for months. It becomes urgent if you develop facial swelling, fever, difficulty swallowing or breathing, or swelling spreading towards the eye or neck; these need a hospital emergency department immediately.
Both are signs of infection. A gum boil is usually an abscess that has found a way to drain through the gum, so it causes little pain. An acute abscess is pus trapped without an outlet, causing throbbing pain, tenderness when biting and swelling. Either way, the tooth or pocket behind it needs treatment.
No. Squeezing or pricking a gum boil can push bacteria deeper, damage the gum and does nothing about the source of the infection. Gentle warm salt-water rinses are fine for comfort. If a swelling needs draining, a dentist does it under clean conditions as part of treating the tooth or gum pocket.
A gum boil next to a root-filled tooth usually means bacteria have got back into the tooth, for example through a leaking crown or filling, a canal that was not fully cleaned or a crack in the root. An X-ray and examination show which. Options include root canal retreatment, surgery at the root tip in selected cases or extraction.
Creative Arts has a single clinic on Jumeira Street (Jumeirah Beach Road). Ask about parking when you book.
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