Severe tooth pain and swelling: when to seek urgent care
Originally published
Severe tooth pain with swelling can be a sign of a dental infection and needs urgent assessment. You may have heard it described as “periostitis” or inflammation around the jawbone. That label cannot tell you which tooth or tissue is involved, or which treatment you need.
The periosteum is tissue covering bone, not a layer of the tooth itself. Dental infections can affect tissues around a tooth and spread beyond them, but pain alone does not establish a diagnosis of bone infection.
When to get help
Contact a dentist urgently if you have increasing tooth pain, swelling, a bad taste or fever, particularly if you feel unwell. If you cannot access urgent dental care, call NHS 111. A dental abscess needs treatment even if pain temporarily eases.
Call 999 or go to A&E if you have difficulty breathing, speaking or swallowing, a lot of swelling inside your mouth, significant difficulty opening your mouth, or swelling around an eye or changes to your vision. These symptoms need more than a routine dental appointment.
What can cause the problem?
Decay, a damaged tooth or gum disease can allow infection to develop. A previously root-treated tooth may also develop persistent or recurrent infection. This does not by itself prove that the earlier treatment was performed incorrectly.
Problems after an extraction need assessment too. Pain is not proof that a root has been left behind, and not every post-extraction problem is an infection. Tell the dentist when symptoms started and about any recent procedures, illnesses, medicines or conditions affecting your immunity.
The dentist examines your mouth and may arrange X-rays to identify the source and extent of the problem. More extensive infection may require hospital assessment or additional investigations. A history of a bladder or throat infection should not be assumed to explain dental swelling without a diagnosis.
How is it treated?
Treatment depends on the source. An abscess may need drainage. If the infection comes from inside a tooth, root canal treatment or retreatment may be possible; sometimes extraction is the appropriate option. Gum-related infections need treatment directed at the affected tissues.
Antibiotics may be needed when infection is spreading or causing systemic illness, but they do not replace treatment of the source. Do not rely on leftover antibiotics or wait for them to resolve a dental abscess.
Your dentist will discuss pain control and what can be done at the appointment. Tell them if you are anxious or still feel pain during treatment so they can respond. Using a microscope can help the dentist see detail, but it does not guarantee a painless or faultless result. Read more about root canal treatment.
While waiting for your appointment
Ask a pharmacist about pain relief suitable for your health and medicines, and follow the packet instructions. Soft food and avoiding very hot or cold drinks may make eating more comfortable. Keep cleaning gently with a soft toothbrush. These measures help with symptoms but do not treat the underlying infection.
After the urgent problem is managed, discuss how to reduce future risk. Brush twice a day with fluoride toothpaste, clean between your teeth and attend check-ups at the interval recommended for you. Regular care can help detect problems earlier, but cannot prevent every infection.
Contact the practice for dental assessment; use emergency services for the warning signs above.