Abscess at the root tip
Deep decay, a crack or an old injury lets bacteria kill the nerve. Infection collects at the root tip and can break out into the cheek or jaw. Our page on a tooth abscess explains the types.
Facial swelling from a tooth means an infection has spread beyond the tooth itself. Most cases are treated by a dentist the same day, but a few signs mean you need a hospital first.
If the swelling is spreading or you have a fever or trouble swallowing, go to a hospital emergency department instead.
A swollen face from a tooth infection always needs treatment the same day, because it means the infection has spread beyond the tooth. Go to a hospital emergency department immediately if you also have a fever, difficulty breathing, swallowing or opening your mouth, or swelling spreading to the eye or neck. Otherwise a dentist drains the infection and treats its source by root canal or extraction. Creative Arts in Dubai is open daily, 10:00 to 20:00.
Who treats you here Dr. Firas Osman Oral & Maxillofacial Surgeon & Implantologist · Dr. Khalid Saeed Co-founder & Dentist · Dr. Kinan Bonni Dentist
Every dentist’s licence can be checked on the DHA Sheryan medical directory.
the swelling is spreading quickly or reaches the eye or down the neck; you have difficulty breathing, swallowing or speaking, or cannot open your mouth properly; the floor of the mouth or under the tongue is swollen; you have a fever, feel very unwell or confused; or there is uncontrolled bleeding or a head or face injury. Call 998 for an ambulance in the UAE if you cannot get there safely. Creative Arts is open daily from 10:00 to 20:00 and is not a 24-hour clinic.
A guide to judging urgency. If you are in doubt, or the swelling is changing quickly, treat it as the more serious column.
| Sign | See a dentist the same day | Go to hospital now |
|---|---|---|
| Size and spread | Swelling of the gum or one cheek that is stable | Swelling that is growing by the hour, or spreading to the eye, jaw angle or neck |
| Breathing and swallowing | Normal | Any difficulty breathing, swallowing saliva or speaking |
| Mouth opening | Can open normally or nearly normally | Cannot open the mouth more than a finger's width |
| Temperature and general health | No fever, feel otherwise well | Fever, shivering, feeling very unwell, drowsy or confused |
| Under the tongue | Normal | Swollen, firm floor of the mouth or tongue pushed upwards |
| After surgery | Swelling that peaks around day two or three and then eases | Swelling that keeps increasing after day three with fever |
People with diabetes, a weakened immune system or who are pregnant should seek help sooner, as infections can progress faster.
The swelling is the body walling off and fighting bacteria. Finding which of these is the source decides the treatment.
Deep decay, a crack or an old injury lets bacteria kill the nerve. Infection collects at the root tip and can break out into the cheek or jaw. Our page on a tooth abscess explains the types.
Infection in a deep gum pocket beside a tooth, often in someone with gum disease. The tooth may feel loose or high when biting.
A partly erupted lower wisdom tooth traps food under a flap of gum. Swelling here can stiffen the jaw and limit opening; see pericoronitis.
Some swelling is normal after extractions or implants and peaks after two to three days. Swelling that keeps growing after that, with fever, suggests infection. Our guide to swelling after oral surgery shows the normal timeline.
Yes. When pus cannot drain through the tooth or the gum, it follows the path of least resistance through the bone and into the soft tissues around the jaw. Where it goes depends on the tooth. Infections from upper teeth tend to swell the cheek and can extend towards the lower eyelid. Infections from lower back teeth can spread into the spaces below the jaw and into the neck, which is why swelling under the jaw, difficulty swallowing or a raised floor of the mouth are taken so seriously: they can narrow the airway.
Most dental infections never reach that stage, especially when they are treated promptly. A swelling that seems manageable in the evening can be much larger by morning, so do not wait to see if it settles.
Treatment has two jobs: release the infection, and remove its source so it does not return.
| Option | When it is used | What to expect |
|---|---|---|
| Drainage | A collection of pus in the gum or tissues | Under local anaesthetic, a small opening lets the pus out; pressure and pain usually ease quickly |
| Opening the tooth | Infection from a dead nerve in a tooth that can be saved | The root canal is opened and cleaned to let the infection drain; the first stage of root canal treatment |
| Root canal treatment | A restorable tooth with sound support | Cleaning, shaping and sealing the canals, usually over one or two visits, then a crown if needed; see root canal treatment |
| Extraction | A tooth that cannot be restored, or a problem wisdom tooth | Removing the source often resolves the infection; see tooth extraction |
| Antibiotics | Spreading infection, fever, or a patient at higher risk | Taken exactly as prescribed, alongside drainage and treatment of the tooth, not instead of it |
| Hospital care | Severe or rapidly spreading infection, airway risk | Assessment, intravenous antibiotics and surgical drainage in hospital |
Antibiotics alone, without drainage or treatment of the tooth, often only quieten an infection for a while before it returns.
The aim of the first visit is to control the infection and relieve pressure. Longer-term treatment is planned once it has settled.
We ask how fast the swelling has grown, about fever, swallowing and your medical history, and check for red flags that need hospital care.
On arrivalThe dentist examines the swelling, the teeth and gums, and takes an X-ray to find the source. 3D CBCT imaging may be used where the anatomy is complex.
Visit 1Under local anaesthetic, the infection is drained and the tooth opened or, if it cannot be saved, removed. Antibiotics are prescribed only where they are needed.
Visit 1A check within a few days confirms the swelling is going down. If it is not, the plan is reviewed promptly.
Within daysOnce the infection has settled, the root canal is finished and the tooth restored, or the gap is planned for if the tooth was removed.
Following weeksFor other dental injuries and problems, our dental first aid guide covers the first steps.
Dr. Firas Osman, Oral & Maxillofacial Surgeon & Implantologist, with Dr. Khalid Saeed and Dr. Kinan Bonni, assess facial swelling, drain dental infections and carry out the extractions and surgery that some cases need. Root canal treatment to save the tooth is planned with the clinic's restorative dentists.
Clinical statements on this page are consistent with these independent sources. They describe averages from studies, not a promise for any one patient.
It can make one side of the face swell noticeably, from the cheek up towards the eye or down along the jaw, depending on which tooth is infected. Swelling that spreads across the face, closes the eye or reaches the neck is serious and needs a hospital emergency department straight away, especially with fever or difficulty swallowing.
Once the infection is drained and the tooth treated or removed, swelling usually starts to go down within a day or two and settles over several days. Swelling that is not improving within two to three days of treatment, or is getting bigger, needs a prompt review. Treating the source is what makes the swelling resolve.
Usually not. Antibiotics can slow a spreading infection, but the source is inside the tooth or gum, where they work poorly without drainage. Without drainage and root canal treatment or extraction, the swelling commonly returns. Antibiotics are added when the infection is spreading or you are unwell, and should be taken exactly as prescribed.
Go to a hospital emergency department if you have difficulty breathing, swallowing or opening your mouth, swelling spreading to the eye or neck, a swollen floor of the mouth, a fever or feel very unwell. If the swelling is limited to the gum or one cheek and you are otherwise well, see a dentist the same day.
It is better not to. Heat can encourage the infection to spread outwards towards the skin. A cold compress wrapped in a cloth, held on the cheek for about 15 minutes at a time, is safer and eases discomfort while you arrange to be seen. Facial swelling needs professional treatment either way.
Yes. Once the nerve inside a tooth has died, the tooth itself may stop hurting even though the infection continues at the root tip. Some people notice swelling or a gum boil with little pain. The absence of pain does not mean the infection has gone, and the swelling still needs prompt assessment.
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