An impacted tooth can feel like a deep, persistent ache in the back of your jaw, or it can produce no sensation at all. About 37% of people have at least one impacted tooth, and many never realize it until a dentist spots it on an X-ray. When symptoms do appear, they range from mild gum tenderness to severe throbbing pain, jaw stiffness, and even earaches that seem unrelated to your teeth.
The Most Common Sensations
The hallmark feeling is pressure. Because the tooth is trapped beneath the gumline or wedged against a neighboring tooth, you may notice a dull, constant pushing sensation in the back of your mouth. This is different from the sharp sting of a cavity. It feels deeper, more like the pain is coming from inside the jawbone rather than from the surface of a tooth.
Other sensations people commonly report include:
- Gum tenderness or swelling directly behind the last molar you can see
- Jaw pain that radiates along the lower half of your face
- Stiffness or difficulty opening your mouth fully, especially in the morning
- Bleeding gums in the area when you brush or chew
These symptoms often come and go. You might have a bad week, feel fine for a month, then notice the pressure return. That on-and-off pattern is one of the reasons people delay getting it checked.
Pain That Shows Up in Unexpected Places
One of the more confusing things about an impacted tooth is that the pain doesn’t always stay in your mouth. The nerve that supplies sensation to your teeth also branches out to your jaw muscles, parts of your ear, and areas of your face. When an impacted tooth irritates that nerve, the signals can get crossed.
This means you might feel a dull ache near your ear that you assume is an ear infection, or a headache concentrated around your temple that you chalk up to tension. Some people notice the pain gets worse when chewing or biting down, which is a useful clue that the source is dental rather than something else. If ear pain or headaches aren’t improving with the usual remedies, an impacted tooth is worth considering.
What It Feels Like When Infection Sets In
A partially erupted tooth, one that has broken through the gum only partway, creates a pocket where bacteria collect easily. The resulting infection is called pericoronitis, and it shifts the sensation from a background ache to something much harder to ignore.
Acute infection brings severe pain around the back teeth, red and visibly swollen gum tissue, and sometimes pus or drainage that leaves a foul taste in your mouth. Your lymph nodes under the jaw may swell, your face can puff up on one side, and swallowing may become uncomfortable. Some people develop a low fever or find that their jaw locks, making it painful to open their mouth more than an inch or two.
Chronic, low-grade infection feels different. It’s more of a mild, temporary achiness that keeps returning, paired with persistent bad breath and a bitter or unpleasant taste that doesn’t go away with brushing. This milder version is easy to dismiss, but it signals that the tissue around the tooth is repeatedly getting inflamed.
When an Impacted Tooth Feels Like Nothing
Plenty of impacted teeth are completely silent. The tooth sits beneath the gum or bone, causes no pressure on neighboring teeth, and never becomes infected. You feel nothing, and the only evidence is a dental X-ray showing a tooth angled sideways or buried deep in the jaw.
Whether a painless impacted tooth needs to come out is actually debated among dental professionals. Some recommend removing it in the late teens or early twenties, when recovery is faster and the risk of surgical complications is lower. Others take a watch-and-wait approach, monitoring the tooth over time for signs of decay, gum disease, or shifting of nearby teeth. Neither strategy is universally agreed upon, so the decision often comes down to the tooth’s position, your age, and your dentist’s clinical judgment.
Pressure on Neighboring Teeth
If the impacted tooth is angled toward the tooth next to it, you may feel soreness not in the impacted tooth itself but in the neighboring one. The constant pressure can damage the adjacent tooth’s root or create a hard-to-clean gap where decay develops. Some people notice their other teeth gradually shifting or feeling crowded, especially along the lower front teeth, though the relationship between wisdom teeth and crowding is still debated.
This kind of symptom is tricky because you might assume the problem is with the tooth that hurts, not the hidden one pushing against it. A dental X-ray is the only reliable way to tell the difference.
What You Can See in the Mirror
If you open wide and look at the gum tissue behind your last visible molar, a partially impacted tooth may show a small white edge of enamel poking through red, puffy gum tissue. The area might look darker pink or red compared to the rest of your gums, and touching it with a clean finger will likely feel tender or sore. In some cases, you’ll see a flap of gum tissue sitting over the tooth’s surface, which is the pocket where food and bacteria tend to get trapped.
A fully impacted tooth, one that’s completely buried, won’t show any visible change in the gum. The only external sign might be swelling along the jawline or a subtle firmness you can feel by pressing along the outside of your cheek near the back of your jaw.
How Symptoms Tend to Progress
Impacted teeth rarely go from painless to emergency overnight. The typical pattern starts with intermittent soreness or a vague awareness of pressure in the back of your mouth. Over weeks or months, the episodes become more frequent and last longer. Gum tenderness shows up, followed by visible swelling. If infection develops, the jump to acute pain, swelling, and difficulty opening your mouth can happen over just a few days.
Not every impacted tooth follows this trajectory. Some stay quiet for decades. But if you’re noticing a pattern of recurring discomfort in the same spot, especially paired with swollen gums, jaw stiffness, or a bad taste, that combination points strongly toward an impacted tooth that’s starting to cause problems.