A tooth abscess can start as a dull ache and quickly turn into pain that keeps you up at night. You might notice a bump on your gum, a bad taste in your mouth, or swelling in your face. Knowing the tooth abscess symptoms helps you act fast. An abscess is an infection, and it won’t go away on its own. The good news is that it’s very treatable, especially when you get help early. This guide explains what a tooth abscess is, the signs to watch for, when it becomes an emergency, and what you can do right now.

What Is a Tooth Abscess?

A tooth abscess is a pocket of pus caused by a bacterial infection. Pus is a thick fluid made of bacteria, dead tissue, and white blood cells, which your body sends to fight the infection. Think of it like a pimple, but inside your mouth and much deeper. The pus has nowhere to go, so pressure builds up. That pressure is what causes the strong, throbbing pain.

There are three main types:

• Periapical abscess (tooth root abscess). This forms at the tip of the tooth’s root. It usually happens when bacteria get inside the tooth through a deep cavity or crack. It’s the most common type.
• Periodontal abscess (gum abscess). This forms in the gum next to a tooth. It’s often linked to gum disease.
• Pericoronal abscess. This forms in the gum flap around a tooth that hasn’t fully come in, usually a wisdom tooth.

Common Tooth Abscess Symptoms

Here are the signs to watch for. You may have only a few of them.

1. Strong, Throbbing Tooth Pain – This is the most common symptom. The pain is often sharp, constant, and pulsing, like a heartbeat. It can get worse when you lie down.

2. Pain That Spreads to Your Jaw, Ear, or Neck – Abscess pain doesn’t always stay in one spot. It can travel to your jaw, ear, or neck on the same side, which can make it hard to tell which tooth is the problem.

3. Pain When You Bite or Chew – Pressing on the infected tooth often hurts. Even tapping it lightly can be painful.

4. Sensitivity to Hot and Cold – Hot or cold food and drinks may cause a sharp pain that lingers after you’ve swallowed.

5. Swollen, Red Gums Around One Tooth – The gum near the infected tooth may look puffy, red, or shiny, and it may feel tender when you touch it.

6. A Bump or “Pimple” on Your Gum – A small bump on the gum is a classic abscess sign. This is where pus is trying to drain out. It may come and go, but that doesn’t mean the infection is gone.

7. A Bad Taste or Bad Breath That Won’t Go Away – If the abscess leaks, you may notice a salty, bitter, or foul taste in your mouth. You may also have bad breath that brushing doesn’t fix.

8. Swelling in Your Face, Cheek, or Jaw – Swelling outside your mouth means the infection may be spreading. Don’t wait on this one.

9. Swollen Glands Under Your Jaw or in Your Neck – Your lymph nodes (small glands that help fight infection) may feel tender or swollen.

10. Fever or Feeling Unwell – A fever, chills, or feeling tired and sick can mean your body is fighting a spreading infection.

11. A Loose or Darkened Tooth – The infected tooth may feel slightly loose or look darker than your other teeth.

What If the Pain Suddenly Stops?

Sometimes the pain disappears all at once, often with a rush of salty or bad-tasting fluid. This usually means the abscess has burst and drained. You may feel better right away, but the infection is still there. The bacteria that caused it are still inside your tooth or gum. Without treatment, the abscess will likely come back, and the infection can keep spreading. In other cases, pain stops because the nerve inside the tooth has died. Again, the infection doesn’t go away. Either way, you still need to see a dentist.

When Is a Tooth Abscess an Emergency?

Go to the nearest emergency room or call 911 right away if you have:

• Trouble breathing or swallowing
• Swelling that spreads to your eye, neck, or under your tongue
• A high fever with facial swelling
• A fast heartbeat, confusion, or feeling very sick

These signs can mean the infection is spreading into your body, which can be life-threatening.

Call your dentist the same day if you have:

• Swelling in your face or gum
• A bump on your gum
• Strong pain that painkillers don’t help

Our guide to emergency dental care in Vancouver explains other situations when you should get help fast.

What Causes a Tooth Abscess?

Bacteria are always present in your mouth. An abscess happens when they get into a place they shouldn’t be. Common causes include:

• Deep cavities that reach the soft inside of the tooth. If you keep getting cavities, our article on why you get cavities explains why it happens and how to stop it.
• Cracked or chipped teeth that let bacteria slip inside
• Gum disease, which creates deep pockets where bacteria collect. Learn more about periodontal disease.
• An injury to the tooth, even one that happened a long time ago
• Old fillings or crowns that have cracked or leaked

You may also be at higher risk if you have a weak immune system, smoke, or have diabetes. See our guide on diabetes and gum disease for more on that connection.

How a Dentist Treats a Tooth Abscess

The goal is simple: get rid of the infection and stop the pain. Your dentist will examine your mouth and take an X-ray to find the source. Depending on what they find, treatment may include:

Draining the Abscess

Your dentist may make a small opening to let the pus drain out. This often brings quick relief from pressure and pain.

Root Canal Treatment

If the infection started inside your tooth, a root canal removes the infected pulp (the soft centre of the tooth), cleans it, and seals it. This lets you keep your natural tooth. Many teeth then need a crown for protection. You can learn more about the whole process in our guide to root canal treatment in Vancouver.

Extracting the Tooth

If the tooth is too damaged to save, your dentist may need to remove it. Not sure which option is right for you? Read our comparison of root canal vs extraction.

Treating the Gums

For a gum abscess, your dentist will drain it and deep-clean the area to remove bacteria from under the gum line.

Antibiotics

Antibiotics may be prescribed if the infection is spreading, if you have a fever, or if you have a weaker immune system. Keep in mind, antibiotics alone can’t cure an abscess. They help control the infection, but the source still needs to be treated.

What You Can Do While You Wait for Your Appointment

These steps can help you feel more comfortable for now. They are not a replacement for treatment.

• Rinse with warm salt water. Mix half a teaspoon of salt in a cup of warm water, swish gently, and spit.
• Take an over-the-counter pain reliever as directed on the package.
• Use a cold compress on the outside of your cheek for 15 minutes at a time.
• Chew on the other side of your mouth.
• Keep your head raised when you sleep, using an extra pillow.

Avoid these:

• Don’t pop or squeeze the bump. This can push the infection deeper.
• Don’t put heat on your face. Heat can make swelling worse.
• Don’t put aspirin directly on your gum. It can burn the tissue.

How to Prevent a Tooth Abscess

Most abscesses can be prevented with good daily habits:

• Brush twice a day with fluoride toothpaste.
• Floss every day to clean between your teeth.
• Cut back on sugary snacks and drinks.
• Get cavities and cracked teeth fixed early.
• Visit your dentist for regular checkups and cleanings.

Regular visits matter because small problems can be caught and treated long before they turn into an abscess.

Get Fast, Gentle Abscess Treatment in Downtown Vancouver at Stadium Dental

A tooth abscess is painful, and it shouldn’t wait. At Stadium Dental, we help you get out of pain quickly and treat the infection at its source.

Here’s what you can expect with us:

• Same-day emergency care whenever possible. We keep time open for urgent cases like abscesses. If you need help outside clinic hours, call 604-559-0299 and a Vancouver dentist will be available to assist you.
• A clear diagnosis. Low-radiation X-rays and complimentary 3D digital scanning help us find exactly where the infection is coming from.
• Treatment that saves your tooth whenever possible. Dr. Teresa Lee and Dr. Marcus Lo provide gentle, pain-free root canal treatment to remove the infection and keep your natural tooth.
• All your care in one place. From drainage and root canals to crowns, extractions, and tooth replacement, you won’t need to go to another clinic.
• Comfort for nervous patients. We offer conscious oral sedation to help you feel calm and relaxed. Learn more in our guide to sedation dentistry in Vancouver.
• Clear pricing and direct billing. We follow the BC Dental Fee Guide, give you an estimate before treatment, and bill most insurance providers directly.
• CDCP patients welcome. We accept the Canadian Dental Care Plan and can help you understand your coverage.
• A multilingual team. We speak languages including Mandarin, Cantonese, Punjabi, Russian, and Ukrainian.
• Easy to find. We’re at 178 Keefer Place, right beside the Stadium-Chinatown SkyTrain station, with free parking available and Saturday hours.

Don’t wait for an abscess to get worse. Book your appointment online, call us at 604-559-0299, or contact our team.

Frequently Asked Questions About Tooth Abscess Symptoms

The Bottom Line

Tooth abscess symptoms like throbbing pain, a bump on your gum, a bad taste, or facial swelling are your body’s way of telling you something is wrong. An abscess won’t heal on its own, but with fast treatment, you can stop the pain, clear the infection, and often save your tooth.

If you notice any of these signs, don’t wait. Schedule your visit with Stadium Dental today and get back to feeling like yourself.