What to Do Right Now if Your Face Is Swollen from a Tooth
If you have facial swelling that you believe is from a tooth infection, assess the severity first. Your next steps depend on whether the swelling is localized or showing signs of spreading.
Go to the Emergency Room If You Have Any of These
These signs suggest the infection may be spreading to dangerous areas. Do not wait for a dental appointment. An emergency room can administer IV antibiotics and, if needed, drain the infection surgically.
- Difficulty breathing or a feeling that your throat is closing
- Difficulty swallowing or inability to swallow your own saliva
- Fever above 101 F (38.3 C)
- Swelling that is spreading rapidly, especially toward the neck, under the jaw, or near the eye
- Swelling on both sides of the face or under the tongue
- Confusion, rapid heart rate, or feeling generally very unwell
See a Dentist or Endodontist the Same Day If
Call your dentist or an endodontist and explain that you have facial swelling from a suspected tooth infection. Most will see you the same day or the next morning. In the meantime, take ibuprofen for pain and inflammation and apply a cold compress to the outside of the swollen area.
- Swelling is limited to one side of the face near a painful tooth
- You have moderate pain and mild swelling without fever
- You can breathe and swallow normally
- The swelling appeared gradually over a day or two
Why Tooth Infections Cause Facial Swelling
A tooth infection starts when bacteria enter the pulp (nerve and blood vessel tissue) inside the tooth, usually through a deep cavity, crack, or injury. Once the pulp tissue dies, bacteria multiply and form an abscess, a pocket of pus at the tip of the root.
If the abscess is not treated, the infection can spread through the bone and into the soft tissues of the face. The body's immune response sends white blood cells and fluid to the area, causing swelling. Where the swelling appears depends on which tooth is infected. Upper front teeth tend to cause swelling in the lip or under the nose. Upper back teeth can cause cheek or eye swelling. Lower teeth can cause swelling in the jaw or under the chin.
The bone surrounding the tooth root has varying thickness. Infection typically breaks through at the thinnest point and spreads into the nearest soft tissue space. This is why the same type of infection can look very different depending on which tooth is involved.
Warning Signs That a Tooth Infection Is Spreading
Most dental infections remain localized and respond well to treatment. However, certain warning signs indicate the infection is spreading and may become dangerous.
Symptoms That Require Immediate Medical Attention
- Fever, chills, or sweating: These suggest the infection is triggering a systemic response.
- Swelling extending to the neck or under the tongue: This raises concern for Ludwig angina, a serious infection of the floor of the mouth that can block the airway.
- Difficulty opening the mouth (trismus): Infection may be spreading into the muscles used for chewing.
- Swelling near the eye: Upper tooth infections can spread toward the eye socket, which can threaten vision.
- Rapid heart rate, low blood pressure, or confusion: These are signs of sepsis, a life-threatening response to infection in the bloodstream.
Can a Tooth Infection Be Life-Threatening?
Yes, though it is rare with access to modern medical care. A tooth infection can become life-threatening if it spreads to the airway (Ludwig angina), the brain (brain abscess, extremely rare), the space around the heart (mediastinitis, very rare), or the bloodstream (sepsis). These complications are most likely to occur in people who delay treatment for weeks, have weakened immune systems, or have uncontrolled diabetes.
The key message is that facial swelling from a tooth infection should always be taken seriously and treated promptly. Early treatment with antibiotics and dental care prevents the vast majority of serious complications.
How Facial Swelling from a Tooth Infection Is Treated
Treating facial swelling requires two steps: controlling the active infection and eliminating its source inside the tooth. Both are necessary. Antibiotics alone do not cure a dental infection because they cannot reach the bacteria sealed inside the dead tooth.
Antibiotics
The dentist or emergency physician will typically prescribe antibiotics to reduce the bacterial load and control the spread of infection. Common choices include amoxicillin, amoxicillin with clavulanate, or clindamycin for patients with penicillin allergies. A typical course lasts 7 to 10 days. You should start to see improvement in swelling within 24 to 48 hours of starting antibiotics.
Antibiotics are a bridge to definitive treatment, not a cure. Once the swelling is under control, you still need a dental procedure to address the source.
Incision and Drainage
If a large abscess has formed in the soft tissue, the dentist, endodontist, or oral surgeon may need to drain it. This involves making a small incision in the swollen area, releasing the pus, and sometimes placing a small rubber drain to allow continued drainage over the next day or two. The relief from drainage is often immediate and significant.
Root Canal Treatment
A root canal removes the infected tissue from inside the tooth, eliminating the source of the bacteria. An endodontist cleans and disinfects the canal system and seals it to prevent reinfection. In many cases, the root canal can be started during the acute infection to establish drainage through the tooth itself. The tooth is then restored with a crown after healing.
Tooth Extraction
If the tooth is too damaged to save, extraction removes the source of infection entirely. This is the faster option for resolving the infection but means you will need a replacement (implant, bridge, or partial denture) to restore function. An oral surgeon may perform the extraction if the case is complex.
Treatment Costs for Tooth Infection with Facial Swelling
The total cost depends on whether the tooth can be saved and how severe the infection is. Costs vary by location, provider, and case complexity.
An emergency dental exam with X-rays typically costs $100 to $300. Antibiotics cost $10 to $50 with insurance or a discount program. Incision and drainage costs $150 to $500. Root canal treatment ranges from $700 to $1,500. If the tooth needs extraction, the cost is $150 to $650 for a simple extraction or up to $800 or more for a surgical extraction.
An ER visit for a dental infection typically costs $500 to $2,000 or more, depending on the facility and whether IV antibiotics or imaging are needed. Seeing a dentist or endodontist directly is usually faster and less expensive when the situation allows.
When to See an Endodontist for a Tooth Infection
Once the acute swelling is under control, an endodontist is the best specialist to evaluate whether the tooth can be saved. Endodontists use dental microscopes and 3D imaging (CBCT) to assess the extent of infection and determine the best approach. If the tooth has enough healthy structure remaining, root canal treatment can save it and prevent the need for extraction and replacement.
See an endodontist if you have been prescribed antibiotics for a tooth infection and need follow-up treatment, if you want to explore saving the tooth rather than having it pulled, or if a previous root canal has failed and the infection has returned.
Find an Endodontist Near You
If you have facial swelling from a tooth infection and need specialist care, search the My Specialty Dentist directory for a verified endodontist in your area. Many offer same-day emergency appointments.
Search Endodontists in Your Area