Wisdom teeth are the last molars to come in, usually in your late teens or early twenties. For some people they slide into place without any fuss. For many others, there is not enough room, so these teeth get stuck, twist, or only partly break through the gum. That crowded corner in the back of your mouth becomes an easy spot for germs.
An infection of wisdom tooth symptoms can start off so mild that you brush it off. A little soreness here, a bit of bad taste there. Then things can change fast. Pain, swelling, and feeling sick can suddenly take over. This guide walks you through the most common signs, what counts as an emergency, and simple steps you can take until you see a dentist, so you feel more informed and less scared.
Common Infection of Wisdom Tooth Symptoms You Might Notice First
Wisdom tooth infections often build slowly. At first you might just feel that something is “off” at the back of your mouth. Maybe you notice soreness when chewing on one side, or your toothbrush keeps catching a tender spot.
Dentists often see the same pattern of early and moderate wisdom tooth infection symptoms. These include pain, swollen gums, bad breath, and sometimes jaw stiffness. You can read a helpful overview of wisdom teeth symptoms and problems, but let’s break things down in simple terms so you can compare them with what you feel right now.
Pain and tenderness around the back of your mouth
Pain is usually the first sign that something is wrong. With an infected wisdom tooth, the pain often sits behind your last molar, deep in the corner of your jaw. It may feel like a bruise at first, especially when you chew on that side or when food hits the area.
Over time, that soreness can turn into a throbbing ache. You might feel it along your lower jaw, up toward your ear, or even into your neck. It often stays on one side. If biting down on food or even gently tapping your teeth together makes that spot scream, that is a common sign of infection around a wisdom tooth.
Some people notice that the pain worsens at night when they lie down. It might also flare when they drink something cold or very hot. Pain that keeps coming back in the same back corner is not normal and should not be ignored.
Red, swollen, or bleeding gums near the wisdom tooth
Look in a mirror and gently pull your cheek back. Infected gum tissue often looks puffy, red, and shiny instead of a healthy pink. It may feel warm and sore if you touch it with a clean finger or your tongue. Brushing or flossing near that tooth can trigger bleeding.
Many wisdom tooth infections start as a gum problem called pericoronitis. This happens when a wisdom tooth only partly comes through the gum, leaving a little flap of tissue that traps food and bacteria. That trapped debris easily causes swelling and infection. You can learn more about pericoronitis symptoms and treatment if you want a deeper medical explanation, but the key point is simple. A swollen, tender gum flap over or behind a wisdom tooth is a warning sign.
If cleaning the area gently does not help, or the swelling comes back again and again, a dentist needs to check it.
Bad breath, bad taste, and pus from the gum
A stubborn bad smell from your mouth can be another early clue. If you notice strong bad breath that does not go away after brushing, flossing, or using mouthwash, bacteria around a wisdom tooth might be to blame.
Many people also notice a constant bad taste, often sour or metallic. This can come from infected fluid leaking from the gums. Sometimes you can even see pus, which looks like a yellow or white sticky fluid coming from around the tooth when you press the gum or when you rinse your mouth.
Pus, a strong foul odor, or a bitter taste that lingers are clear signs of an infection. These infection of wisdom tooth symptoms mean you should book a dental visit soon, even if the pain is not severe yet.
Swelling in the cheek, jaw stiffness, and trouble opening your mouth
As the infection spreads into the tissues around the tooth, the outside of your face can start to change. You might notice that one cheek looks puffier than the other, or that your jawline feels full or tight on one side.
Jaw stiffness is another common symptom. It may feel hard to open your mouth wide, yawn, or bite into a sandwich. Some people describe it as their jaw feeling “stuck” or heavy. Eating, talking, and even brushing teeth can become uncomfortable.
These signs mean the infection has moved beyond just the gum surface. The deeper tissues are getting involved, and that raises the risk of more serious problems if treatment is delayed.
Fever, feeling sick, and symptoms that spread beyond your mouth
When bacteria from a tooth infection start to affect your whole body, you can feel generally unwell. You might notice a low fever, chills, or just feel drained and tired. The glands under your jaw or in your neck can swell and feel sore to the touch.
Pain can also spread. Some people feel sharp or dull aches in the ear, temple, or throat on the same side as the problem tooth. These wider infection of wisdom tooth symptoms mean your body is fighting harder and needs help.
At this stage, you should not wait to seek care. Oral surgeons and dentists recognize these signs as possible warning flags for spreading infection. The Mayo Clinic has a brief overview of impacted wisdom teeth symptoms, which often overlap with infection, including jaw pain, swollen gums, and bad breath.
When Infection of Wisdom Tooth Symptoms Are an Emergency
Most wisdom tooth infections start off mild, but some turn into emergencies. The key is to know which symptoms mean “call the dentist soon” and which mean “go for urgent help right now.”
Red flag symptoms that need urgent dental or medical help
Certain signs should never be watched at home. Trouble breathing or feeling like your throat is closing is an emergency. The same goes for trouble swallowing, drooling because swallowing hurts, or feeling like food or water will not go down.
Fast-spreading swelling is another red flag. If puffiness moves from your jaw into your neck, under your tongue, or toward your eye, you need urgent care. A high fever with chills, or feeling confused or very weak, is also serious.
If you cannot open your mouth more than a finger or two, or the pain is unbearable and constant, the infection may have formed an abscess or begun to affect the airway. In these situations, call emergency services or go to the nearest ER right away.
When to call a dentist soon for wisdom tooth infection symptoms
Other signs are less dramatic but still important. You should make a dental appointment within a day or two if you have steady pain around a wisdom tooth that lasts longer than 1 or 2 days, swelling that comes back more than once, or ongoing bad taste or pus in the area.
Pain that keeps returning in the same corner, even if it eases for a while, usually means the infection or blockage is still there. The tooth may be trapped or partly covered by gum tissue, which keeps letting germs back in.
Do not wait for the pain to become unbearable. Early treatment often means simpler care, less discomfort, and a lower chance of emergency problems. A short article on how to spot a wisdom tooth infection early also stresses paying attention to these repeat warning signs.
What To Do If You Notice Infection of Wisdom Tooth Symptoms
While you wait for a dental visit, you can take a few simple steps to ease pain and keep the area as clean as possible. Home care does not cure the infection, but it can make you more comfortable.
Home care tips to ease pain while you wait for treatment
Here are some safe, easy steps most people can try:
- Rinse gently with warm salt water several times a day. Mix about half a teaspoon of salt in a small glass of warm water, swish, and spit.
- Hold a cold pack or a bag of frozen peas wrapped in a cloth against your cheek for 10 to 15 minutes at a time to ease swelling.
- Take over-the-counter pain relief like acetaminophen or ibuprofen, following the dose on the label and any advice from your doctor.
- Brush the area softly with a small, soft toothbrush to keep food from sitting around the tooth. Do not scrub hard on swollen gums.
Do not place aspirin directly on the gum. It can burn the tissue and make pain worse. Also, never take leftover antibiotics or someone else’s prescription. That can hide symptoms without treating the real problem, and it may cause side effects.
How dentists treat an infected wisdom tooth and what to expect
At the dental office, the dentist will examine your mouth and usually take an X-ray to see the position of the wisdom tooth and the spread of infection. They may gently clean around the tooth to remove trapped food and bacteria.
If there is clear infection, you might receive a prescription for antibiotics to help your body fight the germs. In many cases, especially if the tooth is impacted or keeps getting infected, the long-term solution is to remove the wisdom tooth.
Wisdom tooth removal and treatment of infections are routine procedures for oral surgeons and many dentists. Early care usually means faster healing and less pain. If you feel nervous, say so. Your dentist can explain every step, which helps you feel more in control of what happens next.
Conclusion
Wisdom tooth infections rarely improve for good on their own. Now that you know the main infection of wisdom tooth symptoms like one-sided pain, swollen or bleeding gums, bad breath or taste, jaw stiffness, and fever, you can spot trouble earlier. Paying attention to these signals protects more than your smile. It guards your overall health too.
If something feels wrong at the back of your mouth, trust that feeling. Use gentle home care for short-term relief, but do not stop there. Book a dental visit as soon as you can, and seek urgent help if you have trouble breathing, swallowing, or opening your mouth. With timely treatment and a bit of self-care, most people heal well and get back to eating, talking, and smiling without worry.
Wisdom Tooth Infection Symptoms: FAQs:
What are the most common symptoms of an infected wisdom tooth?
The most common symptom is pain around the back of your mouth, usually behind your last molar. The pain can feel throbbing or sharp and often gets worse when you chew.
You might also notice:
- Red, swollen, or tender gums near the wisdom tooth
- Swelling in your cheek or jaw on that side
- Bleeding gums when you brush near the area
- Bad breath or a bad taste that keeps coming back
Some people also feel pressure, like the tooth is pushing against other teeth.
How can I tell if it’s infection and not just normal wisdom tooth pain?
Normal eruption pain feels like pressure or soreness as the tooth comes through the gum. It usually comes and goes and is mild to moderate.
Infection is more likely if you have:
- Pain that suddenly gets stronger or constant
- Swollen, puffy, or shiny-looking gums
- Pus, oozing, or a bad taste in your mouth
- Trouble opening your mouth wide
If everyday pain from a coming-in tooth suddenly changes into intense, throbbing pain or spreads to your jaw, ear, or head, infection is much more likely.
What does an infected wisdom tooth area usually look like?
You may not see the whole tooth, especially if it’s partly covered by gum. Still, the area around it often shows clear signs.
Common things you might see:
- Red, angry-looking gum tissue around or over the tooth
- A flap of gum (called an operculum) that looks swollen or painful
- White or yellow spots that may be pus
- Food trapped under the gum flap
Sometimes the swelling extends into the cheek so that side of your face looks puffy.
Can a wisdom tooth infection cause ear pain, jaw pain, or headaches?
Yes, it can. The nerves in your jaw, teeth, and ear are closely connected. Pain from an infected wisdom tooth can spread and feel like:
- Earache on the same side as the tooth
- Aching or stiffness in the jaw joint or along the lower jaw
- Headache on one side, especially near the temple or around the ear
If ear pain does not change when you pull or press on the ear itself, and you also have sore gums at the back of your mouth, the tooth is a likely source.
Is bad breath or a bad taste a sign of a wisdom tooth infection?
Very often, yes. Infected or partly erupted wisdom teeth trap food and bacteria. This can cause:
- Persistent bad breath, even after brushing
- A metallic, sour, or foul taste that keeps coming back
- Thick saliva or a coated tongue near the back of the mouth
If you rinse and brush and the bad taste or odor quickly returns, that points to infection or decay around the wisdom tooth.
Can a wisdom tooth infection make me feel sick or tired?
A stronger infection can affect your whole body. You might feel:
- Fever or chills
- Feeling run-down or unusually tired
- Swollen lymph nodes in your neck or under your jaw
- Trouble swallowing or pain when swallowing
If you have these body-wide symptoms along with wisdom tooth pain, you need urgent dental or medical care.
When is a wisdom tooth infection an emergency?
It becomes an emergency when the infection starts to spread or affect breathing and swallowing. Get urgent help right away if you notice:
- Swelling in your face, jaw, or neck that’s getting bigger
- Trouble breathing or swallowing
- Strong fever that doesn’t improve with medicine
- Drooling because it hurts to swallow
- Severe pain that painkillers barely touch
In that situation, call your dentist, urgent care, or go to the emergency room. A spreading tooth infection is serious.
How do dentists usually treat an infected wisdom tooth?
Treatment depends on how bad the infection is and how the tooth is positioned.
Common steps include:
- Cleaning the area and rinsing with an antiseptic solution
- Prescribing antibiotics if the infection is moderate or severe
- Draining pus, if there’s an abscess
- Recommending wisdom tooth removal once the infection is under control
Antibiotics help reduce the infection, but the underlying cause is often the tooth itself. That is why dentists often suggest removing the wisdom tooth that keeps getting infected.
What can I do at home to relieve symptoms before I see a dentist?
Home care won’t cure the infection, but it can ease discomfort until you get help.
Helpful steps:
- Rinse gently with warm salt water several times a day
- Take over-the-counter pain relievers like ibuprofen or acetaminophen (follow the label)
- Keep the area as clean as possible with soft brushing
- Use a cold pack on the outside of your cheek for 10 to 15 minutes at a time
Avoid using aspirin directly on the gum, chewing hard foods on that side, or applying very hot compresses.
Can an infected wisdom tooth get better on its own?
Symptoms might ease for a short time if swelling drains or you clean the area well. That can make it feel like the problem is gone.
In most cases, though, the infection comes back because the root issue remains:
- The tooth is partly trapped under the gum
- Food keeps getting stuck
- You can’t clean the area well enough
If pain, swelling, or bad taste return, or if you’ve had more than one flare-up, it’s time to see a dentist or oral surgeon to talk about longer-term treatment.

Gas S. is a health writer who covers metabolic health, longevity science, and functional physiology. He breaks down research into clear, usable takeaways for long-term health and recovery. His work focuses on how the body works, progress tracking, and changes you can stick with. Every article is reviewed independently for accuracy and readability.
- Medical Disclaimer: This content is for education only. It doesn’t diagnose, treat, or replace medical care from a licensed professional. Read our full Medical Disclaimer here.


