Reviewed by Dr. Brett Broda
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Reading time: three minutes
Tooth pain when biting down usually means pressure is irritating a tooth, a filling or crown, or the tissues around the root. Because many different problems can feel similar, a professional dental exam is the best way to identify the cause and find a solution to prevent it from getting worse.
Table of Contents
Common Causes of Tooth Pain When Biting
Tooth pain when biting down is a symptom, not a diagnosis. These are the most common causes evaluated during an exam.
- Cracked tooth or fractured filling: Tiny cracks can flex under pressure and cause a quick, sharp pain. This is most common with clenching, grinding, or older large fillings. A really common finding is pain on release of pressure.
- Filling or crown that is hitting too high: An uneven bite after dental work can overload one tooth and make chewing painful. It often starts soon after treatment, but can happen years afterwards as teeth shift over time.
- Deep decay or nerve irritation: When a cavity gets close to the nerve, chewing pressure can trigger pain. Cold or sweet sensitivity is also common..
- Inflammation or infection around the root: Irritation near the root can make the tooth sore when biting. Swelling, a gum pimple, or a bad taste are warning signs.
- Gum or ligament irritation: The tissues that support the tooth can feel bruised from grinding, bite imbalance, or biting something hard. The tooth may be tender to pressure or tapping. This is common with clinching and grinding.
When to See a Dentist
Schedule an evaluation if tooth pain when biting lasts more than a few days, is getting worse, or makes it hard to chew normally.
Book an appointment as soon as possible if you notice:
- Swelling in the gums, face, or jaw
- Fever or feeling unwell
- Drainage, a bad taste, or a boil on the gums
- Pain that wakes you up
- A tooth that feels loose or higher than the others
- Trouble swallowing or breathing
What to Do Until Your Appointment
Until you are seen, try to avoid chewing on the painful side and stick to softer foods. Keep the area clean with gentle brushing and flossing, and rinse with warm saltwater if your gums feel irritated.
If you have swelling, drainage, or severe pain, seek care as soon as possible.
How Bite Pain Is Diagnosed and Treated
Your tooth and any fillings or crowns will be examined and the bite will be checked. X-rays may be taken to look for decay, cracks, or inflammation around the root. Sometimes a 3D X-ray (CBCT) is taken.
Treatment depends on the cause. Some issues can be resolved with a simple bite adjustment, while others need repair or treatment to protect the tooth and stop the pain.
Common treatment options include:
- Bite adjustment to remove a high spot on a filling or crown
- Repair or replacement of a cracked or leaking filling or crown
- New crown to protect the tooth
- Custom nightguard fabrication for clinching and grinding.
- Decay or nerve treatment such as a filling, crown, or root canal, depending on severity
- Supportive care such as periodontal treatment for gum infection
Relief Through Timely Dental Care
Tooth pain when biting down often signals a problem that will not resolve on its own. Identifying the cause early helps protect the tooth, prevent further damage, and restore comfortable chewing.
To book an appointment at our dental office in Boulder, CO, call (303) 442-6141 or visit us at 777 29th St, Unit 300, Boulder, CO 80303.
FAQs
Why does my tooth hurt only when I bite down?
It can happen if the filling is slightly high or the tooth is temporarily irritated. If the pain lasts more than a few days or feels sharp with chewing, contact your dentist for a bite check.
What does nerve pain in a tooth feel like?
Nerve pain in a tooth is often sharp, throbbing, or lingering. It may be triggered by biting pressure, temperature changes, or sweets, and can continue even after the stimulus is removed. Persistent or worsening pain may indicate inflammation inside the tooth and should be evaluated.
How long will a tooth hurt until the nerve dies?
There is no predictable timeline. Pain may last for days, weeks, or longer depending on the cause and the extent of inflammation or infection. In some cases, pain may decrease if the nerve loses vitality, but the underlying problem can still progress and requires evaluation.
