Why Does My Tooth Hurt When I Bite Down? 7 Possible Causes
If your tooth hurts when you bite down or chew, you're not alone. Pain when biting down can have several different causes, ranging from a minor dental issue to a problem that requires prompt treatment.
You might notice the pain when eating something hard, chewing on one side of your mouth, or simply putting pressure on a particular tooth. While it can be tempting to wait and see if the discomfort goes away, persistent pain when biting shouldn't be ignored.
Here are seven common reasons your tooth may hurt when you bite down.
1. Tooth Decay
One of the most common causes of tooth pain is dental decay (a cavity).
As decay progresses deeper into a tooth, it can make the tooth more sensitive to pressure, temperature, and chewing. A small cavity may cause little or no discomfort at first, while deeper decay can eventually lead to significant pain.
Depending on how advanced the decay is, treatment may involve a filling, crown, or root canal.
If your tooth consistently hurts when you chew, your dentist can examine the tooth and determine whether decay is the cause.
2. A Cracked or Fractured Tooth
A cracked tooth can cause a very specific type of pain, often a sharp sensation when you bite down or release your bite.
Cracks can develop from:
Biting down on hard foods
Teeth grinding or clenching
Previous dental work
Injury or trauma
Normal wear over time
Sometimes a crack is difficult to see without a dental examination. You may not notice anything unusual when looking at the tooth yourself.
Because cracks can become worse over time, it's important to have persistent pain evaluated rather than continuing to chew on the affected tooth.
3. An Infection or Dental Abscess
Pain when biting down can sometimes indicate an infection inside or around a tooth.
A dental infection may also cause:
Throbbing or persistent tooth pain
Sensitivity to hot or cold
Swelling around the tooth or gums
A bad taste in your mouth
Fever
Tenderness in the jaw
An abscess should be evaluated by a dentist promptly. Dental infections generally do not resolve on their own and may require treatment such as drainage, a root canal, or extraction.
If you develop significant facial swelling or have difficulty breathing or swallowing, seek emergency medical attention.
4. A Problem With a Filling or Crown
If your tooth started hurting when you bite down after getting a filling or crown, the restoration may need to be evaluated.
Sometimes a new filling or crown can interfere with your bite, causing excessive pressure on the tooth when you chew.
A dentist can check your bite and determine whether the restoration needs to be adjusted.
Pain around an older crown or filling can also indicate decay, damage, or another problem underneath or around the restoration.
5. Gum Disease or Inflammation
Tooth pain isn't always caused by the tooth itself.
Gum disease can affect the tissues and bone supporting your teeth. As periodontal disease progresses, teeth can become sensitive, tender, or loose, potentially making chewing uncomfortable.
Other signs of gum disease can include:
Bleeding when brushing or flossing
Red or swollen gums
Persistent bad breath
Receding gums
Tender gums
Loose or shifting teeth
If you regularly experience bleeding or tenderness around your gums, a dental examination can help identify the underlying cause.
6. Teeth Grinding or Clenching
Do you wake up with a sore jaw or notice that your teeth feel sensitive when you chew?
Teeth grinding (bruxism) and clenching can put significant pressure on your teeth.
Over time, this pressure may contribute to:
Tooth sensitivity
Cracks or fractures
Worn-down teeth
Jaw soreness
Headaches
Pain when chewing
Many people grind or clench their teeth while sleeping without realizing it.
If your dentist suspects bruxism, they can evaluate your teeth for signs of excessive wear and discuss ways to protect them.
7. Recent Dental Work
It's not unusual to experience some sensitivity or tenderness after certain dental procedures.
Depending on the treatment, a tooth may remain sensitive for a period of time while the surrounding tissues settle.
However, persistent, severe, or worsening pain after dental treatment should be evaluated by your dentist.
Your dentist can determine whether the discomfort is part of the normal healing process or whether the tooth needs additional treatment.
When Should You See a Dentist?
If your tooth only hurts occasionally and the discomfort disappears quickly, it may not require emergency treatment. However, you should make an appointment if the pain:
Continues for more than a few days
Gets progressively worse
Makes it difficult to chew
Is accompanied by swelling
Causes significant sensitivity
Occurs with a fever or bad taste
Follows an injury
Develops after dental treatment and doesn't improve
The sooner the underlying cause is identified, the more treatment options you may have.
What Can You Do Until Your Appointment?
While you're waiting to see your dentist, try to avoid putting unnecessary pressure on the painful tooth.
You can:
Chew on the opposite side of your mouth.
Avoid particularly hard or sticky foods.
Keep brushing and flossing gently.
Rinse your mouth with warm water.
Use an over-the-counter pain reliever if it is safe for you and follow the package directions.
Avoid putting aspirin directly against your tooth or gums, as this can irritate the tissue.
Most importantly, don't ignore persistent tooth pain simply because it isn't severe. Some dental problems can worsen before they become significantly painful.
Don't Ignore Pain When You Bite Down
Pain when biting down isn't something you should have to live with. From a cavity or cracked tooth to an infection, gum disease, or an issue with a dental restoration, there are several possible causes—and the right treatment depends on what's actually causing the pain.
If a particular tooth hurts when you bite or chew, schedule an appointment with your dentist for an evaluation. Identifying the problem early can help protect your tooth and prevent a more serious dental issue from developing.
Experiencing tooth pain when you bite down? Contact our office today to schedule an appointment.
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