Can a Dental Infection Become Dangerous?
- 2 days ago
- 5 min read
Yes. A dental infection can become dangerous if it is not treated promptly. While many infections begin as a cavity or minor tooth problem, bacteria can spread into the gums, jawbone, surrounding tissues, and even other parts of the body. Seeking emergency dental care at the first signs of an infection can help prevent serious complications.
A toothache is never something to ignore. Pain, swelling, or pus around a tooth often indicates that bacteria have reached the inner pulp of the tooth or surrounding tissues. Fortunately, modern dentistry offers effective treatments that can eliminate the infection and save your tooth in many cases.
What Is a Dental Infection?
A dental infection occurs when bacteria enter the inner part of a tooth or surrounding gum tissue, causing inflammation and the formation of pus. This is commonly called a tooth infection or dental abscess.
Dental infections typically develop because of:
Untreated cavities
Cracked or broken teeth
Advanced gum disease
Dental trauma
Failed dental restorations
Poor oral hygiene
Once bacteria reach the tooth's pulp, the infection rarely resolves on its own.
Why a Dental Infection Should Never Be Ignored
Many people assume a severe toothache will eventually disappear.
Unfortunately, the pain may lessen because the nerve inside the tooth has died—not because the infection is gone.
Without treatment, the infection continues spreading.
It may affect:
The surrounding gums
Jawbone
Face
Neck
Sinuses
Bloodstream (in rare but serious cases)
Early treatment dramatically reduces the risk of complications.
Signs You May Have a Dental Infection
Recognizing the symptoms early can prevent a minor problem from becoming a dental emergency.
Common Symptoms of a Tooth Infection
You may notice:
Persistent toothache
Sharp or throbbing pain
Swollen gums
Facial swelling
Sensitivity to hot or cold
Pain when chewing
Bad taste in your mouth
Pus near the tooth
Bad breath
Loose tooth
These symptoms should never be ignored.
When Does a Dental Infection Become Dangerous?
Most dental infections remain localized initially, but bacteria can spread if treatment is delayed.
Warning Signs of a Serious Dental Infection
Seek immediate dental or medical care if you experience:
Rapidly increasing facial swelling
Swelling under the jaw or around the eyes
Difficulty swallowing
Difficulty breathing
Fever over 100.4°F
Chills
Severe fatigue
Difficulty opening your mouth
Swollen lymph nodes
Persistent pus drainage
These symptoms may indicate that the infection is spreading beyond the tooth. If you're unsure whether your symptoms require urgent treatment, read our guide on When Dental Emergencies Strike to learn when you should seek immediate care.
Can a Tooth Infection Spread to Other Parts of the Body?
Yes.
Although uncommon with timely treatment, bacteria from an untreated dental infection can spread through surrounding tissues or enter the bloodstream.
Potential complications include:
Cellulitis (skin infection)
Bone infection
Sinus infection
Deep neck infections
Sepsis (a life-threatening response to infection)
Prompt dental treatment greatly reduces these risks.
What Causes a Dental Abscess?
A dental abscess usually develops when bacteria gain access to the inside of the tooth.
Common Causes Include
Untreated Cavities
Deep decay allows bacteria to reach the dental pulp.
Cracked Teeth
Even small cracks can provide an entry point for bacteria.
Advanced Gum Disease
Deep periodontal pockets trap bacteria around the roots of teeth.
Dental Injuries
Trauma may damage the pulp even if the tooth appears intact.
How Dentists Diagnose a Dental Infection
Your dentist will perform a thorough examination to determine the source and severity of the infection.
This may include:
Visual examination
Digital dental X-rays
Gentle percussion testing
Bite evaluation
Assessment of swelling and drainage
Early diagnosis often allows for less invasive treatment.
Treatment Options for a Dental Infection
Treatment depends on the location and severity of the infection.
Root Canal Therapy
If the tooth can be saved, root canal treatment removes infected tissue, disinfects the canals, and seals the tooth.
This is often the best way to eliminate infection while preserving your natural tooth.
Drainage of the Abscess
If pus has accumulated, your dentist may carefully drain the abscess to reduce pressure and remove bacteria.
Antibiotics
Antibiotics may be prescribed when:
The infection has spread
Significant swelling is present
The immune system is compromised
However, antibiotics alone rarely eliminate the source of a dental infection. Definitive dental treatment is still necessary.
Tooth Extraction
If the tooth cannot be restored, extraction may be recommended to stop the infection from spreading.
What to Do if You Think You Have a Dental Infection
If you suspect a tooth infection:
✔ Call your dentist immediately.
✔ Keep the area clean.
✔ Rinse gently with warm salt water.
✔ Take over-the-counter pain medication as directed.
✔ Avoid chewing on the affected side.
✔ Stay hydrated.
Do NOT
Place aspirin directly on the gums.
Ignore facial swelling.
Wait for the pain to disappear.
Attempt to drain the abscess yourself.
Prompt professional care is the safest option.
Can Dental Infections Be Prevented?
Most dental infections are preventable.
Healthy Habits That Reduce Your Risk
Brush twice daily with fluoride toothpaste.
Floss every day.
Visit your dentist every six months.
Treat cavities early.
Wear a mouthguard during sports.
Avoid delaying treatment for cracked or broken teeth.
Preventive care is almost always easier—and less expensive—than treating an advanced infection.
Why Emergency Dental Care Matters
A dental infection can worsen within days, sometimes even hours.
Early emergency treatment can:
Relieve severe pain
Stop the spread of infection
Save your natural tooth
Reduce the need for more extensive treatment
Protect your overall health
If you're experiencing severe tooth pain or swelling, don't wait.
Frequently Asked Questions
Can a dental infection go away on its own?
No. While the pain may temporarily decrease, the infection usually remains and requires professional dental treatment.
Is facial swelling from a tooth infection an emergency?
Yes. Facial swelling may indicate the infection is spreading and should be evaluated immediately.
Will antibiotics cure a dental infection?
Antibiotics help control bacterial spread but usually do not eliminate the source of the infection. Most patients also need root canal therapy or extraction.
How quickly can a dental infection become serious?
Some infections worsen over several days, while others progress much faster. Prompt evaluation is always recommended.
Should I go to the emergency room for a dental infection?
Go to the emergency room immediately if you have difficulty breathing, difficulty swallowing, rapidly increasing facial swelling, or a high fever. Otherwise, contact your emergency dentist as soon as possible.
Don't Wait for a Dental Infection to Get Worse
A dental infection won't go away on its own—and delaying treatment can lead to more serious health complications. If you're experiencing tooth pain, swelling, or signs of an abscess, contact Aleris Salem Dental Center for prompt emergency dental care.
📞 (855) 745-0055
📍 90 Lafayette St, Salem, MA 01970
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