Jaw infection or jaw joint pain (TMJ): what is the difference?
With jaw pain, it is important to tell two different situations apart: an infection, usually starting in an infected tooth, the gums or an extraction site, which can spread to the soft tissues or the jawbone (bone infection, osteomyelitis); and disorders of the jaw joint and chewing muscles (temporomandibular disorders, TMD, often called "TMJ"), which cause pain but are not an infection. Early diagnosis makes it possible to treat the cause before things get worse.
| Criterion | Jaw infection | Jaw joint disorder (TMD) |
|---|---|---|
| Usual origin | An infected tooth, the gums or an extraction site | The jaw joint and chewing muscles; clenching, grinding and stress are often involved |
| Typical signs | Pain, swelling, redness, warmth, sometimes pus or fever | Pain in the joint or muscles, locking, limited opening; clicking without pain is common |
| Main treatment | Treating the tooth (drainage, root canal or extraction); antibiotics only in specific cases | Conservative, reversible measures: soft foods, heat or cold, exercises, night guard if needed |
| How urgent? | Swelling or worsening pain: an urgent dental visit; fever, swelling spreading toward the eye or neck, or difficulty swallowing or breathing: the emergency room right away | Usually not an emergency; lasting pain, locking or limited opening deserve an examination |
| Who to see | A dentist; an oral and maxillofacial surgeon for complex cases | A dentist, who checks the joint, the chewing muscles and the bite |
Jaw inflammation: symptoms and diagnosis
Jaw inflammation causes a wide range of symptoms whose severity depends on the type of inflammation and its cause. The most common is persistent pain in the jaw that gets worse when chewing or opening the mouth, often with swelling, redness, local warmth and sometimes limited jaw movement that makes eating and speaking difficult. Other possible symptoms:
- localized tenderness in the face and jaw
- a feeling of pressure in the ears
- headaches spreading from the jaw
- swollen lymph nodes under the jaw
- pus, in the case of infection
Diagnosis starts with a clinical examination of the jaw, teeth, gums and jaw joints. X-rays, or CBCT 3D imaging at the clinic in some cases, help assess the bone and nearby structures. When the infection starts in a tooth, root canal treatment, or root canal retreatment when an earlier one failed, may be needed; sometimes the problem is linked to an infection under a crown, so existing restorations are checked too.
What causes jaw pain and inflammation?
Dental infections are the most common cause: they can spread from an infected tooth or the gums to the jawbone. Jaw inflammation often develops from untreated dental problems such as deep decay or gum disease. An infection can also develop after a tooth extraction, when the socket becomes infected or fragments of tooth remain in the tissue.
Injuries and general conditions
Other causes include injuries and fractures of the jaw, and osteonecrosis of the jaw (bone death), which can develop after certain bone-strengthening or cancer medications, or after radiation therapy to the head and neck (Ruggiero et al., AAOMS, 2022). Complex cases are diagnosed and treated together with a certified oral and maxillofacial surgeon who treats patients at the clinic.
TMJ disorders (TMD)
Jaw joint disorders are a common cause of jaw pain, but they are usually not an infection. Chronic strain on the joint, clenching and grinding (bruxism) and emotional stress are linked to pain in the joint and chewing muscles. Inflammation of the joint itself, for example with osteoarthritis or rheumatoid arthritis, is another possible cause, diagnosed by examination and sometimes imaging.
Less common causes
Autoimmune diseases, tumors of the jaw (benign or malignant) and resistant fungal or bacterial infections are less common causes. Whenever jaw inflammation is suspected, an accurate diagnosis is needed to identify the specific cause and adapt the treatment.
TMJ pain (TMD): when the jaw joint hurts
Temporomandibular disorders (TMD) are problems of the jaw joint and the muscles that move the jaw; they are a common cause of jaw pain and are not an infection.
Typical signs are pain in the jaw joint or the chewing muscles, pain when chewing, a jaw that locks or does not open fully, and sometimes headaches or a feeling of pressure in the ears. According to the U.S. National Institute of Dental and Craniofacial Research (NIDCR), clicking of the jaw joint without pain is common and does not need treatment, and for many people TMD symptoms improve even without treatment. That is why care starts with simple, reversible measures, and irreversible treatments, such as grinding down the teeth to change the bite, are best avoided: there is not enough evidence that they work.
Pain, locking or limited opening deserve an examination, to rule out a dental cause and choose the right approach. Clenching and grinding often play a role, so a custom night guard may be suggested to protect the teeth.
Examination, treatment plan and price quote
detailed and personalized
During the consultation, Dr Haim Aseriel examines your teeth, explains all the options and gives you a transparent price quote, with no obligation. The clinic is at 12 HaTnufa Street, Jerusalem.
How are jaw pain and jaw inflammation treated?
Treatment depends on the exact cause and the severity. The principle is to treat the cause while relieving the pain.
Infection from a tooth
The main treatment for an infection that starts in a tooth is treating the tooth itself, such as draining the pus (emergency dental care), root canal treatment or extraction, not antibiotics alone. According to the American Dental Association (ADA), antibiotics are considered when general signs such as fever or feeling unwell appear, or when the infection spreads, and they are given by prescription only.
Jaw joint and bone infection
For a jaw joint problem, treatment may include a night guard, exercises and physical therapy. In more complex cases, such as bone infection (osteomyelitis), surgery to remove dead bone may be needed.
Pain relief
Ask your dentist or pharmacist which pain reliever to take and at what dose. According to the ADA guideline, for adults without contraindications, non-opioid pain relievers such as NSAIDs are usually the first choice for acute dental pain. After the inflammation is treated, any damage to the teeth and mouth should be restored.
For repeated jaw inflammation, a full examination is recommended to look for possible general causes, together with a personalized prevention plan.
Relieving jaw muscle and joint overuse at home
One of the most common causes of jaw pain is overuse of the jaw muscles, often from habits such as grinding or clenching the teeth, which tend to increase in periods of stress, often without the person noticing. A custom night guard protects the teeth from wear and may help some patients, but it does not cure bruxism itself.
Relaxation techniques such as gentle stretching of the face and jaw muscles, warmth on the area with a warm towel, and gentle massage around the joints can ease symptoms in the short term. Untreated gum inflammation can also cause similar symptoms.
Eating softer foods and avoiding foods that need long chewing during flare-ups also helps, together with specific exercises to strengthen and gently stretch the jaw muscles. According to NIDCR, simple, reversible measures, such as soft foods, heat or cold and exercises, are the right place to start, together with cutting down habits such as jaw clenching, gum chewing or nail biting.
If there are signs of a gum cyst or abscess, it should be treated to prevent the inflammation from spreading.
When should you see a dentist about pain in the jaw?
If you have jaw pain that does not go away after a few days, or pain with other symptoms such as difficulty opening your mouth, sensitive teeth or a locking jaw, see a dentist soon. Do not wait until the pain becomes unbearable: early treatment addresses the cause before things get worse. Diagnosis includes a clinical examination, imaging as needed, a review of chewing habits and your medical history.
A fever, swelling that spreads toward the eye or the neck, or difficulty swallowing or breathing require immediate care in a hospital emergency room. Pain spreading to the ear or the head, or swelling of the jaw, need an urgent dental examination. If you also have swollen, painful gums, the problem may be more complex and need a combined approach.
To book a consultation in English at the dental clinic in Jerusalem with Dr Haim Aseriel, a US-trained dentist (DDS, NYU College of Dentistry), call 03-912-1879 (Sun 8:00–19:00 · Mon 9:00–19:00 · Tue–Wed 9:00–21:00 · Thu 8:30–21:00 · Fri 8:00–14:00). The clinic is at 12 HaTnufa Street in Talpiot, south Jerusalem.
Jaw pain and TMJ: frequently asked questions
Yes. Pain that starts in an infected tooth, the jawbone or the jaw joint sometimes feels like pressure in the ears or headaches spreading from the jaw. Pain spreading to the ear or the head, or swelling of the jaw, need an urgent dental examination.
Yes. An infection can develop after a tooth extraction, when the socket becomes infected or fragments of tooth remain in it. Pain that increases in the days after the extraction, swelling, a bad taste or discharge mean you should contact the clinic. A fever, swelling that spreads toward the eye or the neck, or difficulty swallowing or breathing require immediate care in a hospital emergency room.
A jaw infection that starts in a tooth is treated first by treating the tooth itself: draining the pus, root canal treatment or extraction. According to the American Dental Association (ADA), antibiotics are considered when there is fever, a general feeling of illness or a spreading infection, and they are given by prescription only.
A clicking jaw joint without pain is common and does not need treatment, according to the U.S. National Institute of Dental and Craniofacial Research (NIDCR). Pain, locking of the jaw or limited mouth opening, on the other hand, warrant an examination by a dentist.
Sources
- Lockhart PB et al., Journal of the American Dental Association, 2019 – View source
- American Dental Association, Antibiotics for Dental Pain and Swelling Guideline, 2019 – View source
- Carrasco-Labra A et al., Journal of the American Dental Association, 2024 – View source
- National Institute of Dental and Craniofacial Research (NIH), TMD (Temporomandibular Disorders) – View source
- Ruggiero SL et al., Journal of Oral and Maxillofacial Surgery, 2022 – View source
