Key Takeaways
- Most headaches have causes unrelated to the teeth, so sudden or severe headaches need medical attention.
- Dental problems can sometimes trigger headaches through the trigeminal nerve that serves the teeth, jaw and head.
- If headaches come with tooth pain, jaw pain or grinding, a dental exam can help find the cause.
Chronic headaches aren’t always caused by stress or migraines. In some cases, the source of the pain may actually come from your teeth.
Dental problems such as tooth nerve damage or infection can sometimes cause pain that is felt in the jaw, temples, or head, because the teeth and face share nerve pathways. The trigeminal nerve plays a major role in facial sensation, which helps explain why dental pain can be felt outside the mouth. Most headaches, however, have causes unrelated to the teeth.
In this guide, we’ll explain how dental problems can cause headaches, the symptoms to watch for, and when to see a dentist.
When a Headache Needs Medical Attention
Most headaches have causes unrelated to the teeth, such as stress, dehydration, poor posture, or eyesight problems. Call 911 or go to the nearest emergency room if a headache comes with any of the following:
- A sudden start with extreme pain
- A recent head injury
- A seizure
- Numbness or weakness in the body or face
- Difficulty speaking, balance, walking, or remembering things
- Drowsiness or confusion
- Loss of vision
- A very high temperature, stiff neck, or sensitivity to bright lights
- A rash that does not fade when a glass is rolled over it
See a physician promptly if a headache is new or getting worse, is triggered or worsened by coughing, sneezing, bending down, or exercise, or comes with vomiting or eye problems. A dental exam can help rule dental causes in or out, but it does not replace a medical evaluation of these symptoms. Source: NHS: Headaches.
Is Your Toothache Triggering Headaches?
Tooth nerve damage can spread discomfort beyond your mouth. Let’s fix it early.
Why Tooth Problems Can Cause Headaches
Your teeth, jaw, and head are connected through the trigeminal nerve, one of the largest nerves in the body. When this nerve is irritated by dental issues such as infection or nerve damage, pain signals can travel from your teeth to your head, resulting in headaches.
This is known as referred pain, where the brain interprets dental pain as head pain. Because of this nerve connection, even a problem in a single tooth can trigger pain that radiates through the jaw, temples, or even behind the eyes.
Patients searching for tooth pain relief treatment in Vancouver, WA may benefit from having both the painful tooth and related headache symptoms evaluated together.
Common Causes of Tooth Nerve Damage Leading to Headaches
Several dental issues can irritate your nerves and trigger headaches:
Tooth Decay and Infections
Untreated cavities can reach the nerve inside the tooth, causing inflammation and infection. In some cases, the resulting pain can be felt in the face or head. If decay is suspected, timely care for dental cavities can help prevent the issue from progressing into nerve pain or infection.
Trauma or Cracked Teeth
A cracked or fractured tooth can expose the inner nerve. Chewing or temperature changes may trigger nerve pain, which can refer to your head.
Bite Misalignment and Bruxism
Jaw misalignment or teeth grinding, also known as bruxism, can stress the muscles around your jaw, which may contribute to jaw pain and tension-type headaches. Research linking bite alignment to migraines is limited.
Gum Disease
Advanced gum disease can cause swelling and tenderness in the gums and jaw, and pain from the area may sometimes be felt more widely.
Impacted Teeth
Wisdom teeth or other impacted teeth can press against neighboring teeth and cause jaw or facial pain, which may occasionally be felt as head pain.
Symptoms to Watch For
Dental-related headaches may present alongside other signs:
- Tooth sensitivity to hot, cold, or sweet foods
- Pain when chewing or biting
- Jaw stiffness or soreness
- Recurrent headaches in the same area
- Swelling around the affected tooth
Experiencing ongoing headaches with tooth sensitivity or jaw pain? A dental exam can help identify if the cause is coming from your teeth. Schedule an appointment with our team today.
Symptoms such as tooth pain that comes and goes can also be important clues, especially when discomfort appears alongside headaches, pressure, or sensitivity.
When Headaches Are Caused by Dental Issues
You may be dealing with a dental-related headache if:
- Pain starts near the jaw or teeth
- Headaches persist and a physician has not found another cause
- You have tooth sensitivity or pain when chewing
- You notice jaw clenching or grinding
Identifying these patterns early allows your dentist to provide targeted care and prevent the problem from worsening. If a headache is being driven by pain from an infected or damaged tooth, treating that tooth, for example with root canal treatment, may relieve both the tooth pain and the related head pain. Results vary, and a headache with another cause will not improve with dental treatment. Routine general dentistry services and visits to an emergency dentist can also address urgent dental problems that might be causing head pain.
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Diagnosing Dental-Related Headaches
Dentists use a combination of methods to diagnose the cause of headaches:
- Dental exams: A thorough check of teeth, gums, and bite alignment
- X-rays: Help identify decay, infections, and impacted teeth
- Bite analysis: Assess jaw alignment and look for signs of bruxism
- Patient history: Understanding headache patterns, triggers, and prior dental work
Once a dental source is identified, your dentist can recommend a treatment plan. If no dental cause is found, you may be referred to your physician.
Treatment Options
Treating dental-related headaches focuses on eliminating the source of nerve irritation:
Root Canal Treatment
A root canal removes infected or damaged tissue from inside the tooth, relieving tooth pain caused by infection or nerve damage and, in some cases, any related head pain.
Dental Restorations
Crowns, fillings, and other restorations protect teeth that are cracked, decayed, or otherwise compromised.
Bite Adjustments and Night Guards
Correcting misaligned bites or using night guards for teeth grinding can prevent jaw strain and tension headaches.
Periodontal Therapy
Treating gum disease reduces inflammation in the gums and supporting tissues.
Emergency Dental Care
For acute pain, an emergency dentist can provide prompt evaluation and treatment to help relieve pain and keep infections from worsening.
Preventing Dental-Related Headaches
Preventive care can reduce the risk of headaches originating from dental issues:
- Brush and floss regularly to prevent cavities and gum disease
- Schedule regular checkups for early detection of nerve damage
- Address bite misalignment promptly with orthodontic care
- Wear night guards if you grind your teeth
- Seek prompt care for cracked or injured teeth
Proactive dental care not only keeps your teeth healthy but may also help you avoid dental pain and discomfort that can contribute to head pain. For more insight into how dental problems can connect with recurring head pain, read why your jaw hurts in the morning.
Frequently Asked Questions
Can a tooth infection cause headaches?
A tooth infection can cause pain that spreads to the jaw, face, or head. It can also cause swelling or fever, so see a dentist promptly if you suspect an infection. Headaches have many other causes, so a physician should evaluate headaches that are new, severe, or persistent.
How do I know if my headache is dental-related?
Headaches that start near the jaw or teeth, or come with tooth sensitivity or pain when chewing, may be dental-related. A dental exam can help rule dental causes in or out, and a physician can evaluate other causes.
Will a root canal stop headaches?
If the headache is caused by nerve damage or infection inside a tooth, a root canal treats the source of the tooth pain and may relieve the related head pain. If the headache has another cause, a root canal will not stop it.
Can jaw clenching cause headaches?
Teeth grinding and jaw clenching can strain the jaw muscles and may contribute to tension-type headaches and jaw pain.
Get to the Root Cause of Your Headaches
If your headaches may be linked to dental issues, our team can help diagnose and treat the problem at its source.
- Advanced diagnostics
- Personalized treatment plans
- Trusted dental care in Vancouver, WA
Schedule your visit today!
Tooth Pain Causing Headaches?
Nerve damage could be the reason. Get checked before it gets worse.
Sources
- NHS: Headaches: when to seek urgent care for a headache and common headache causes.
- American Association of Endodontists: Root Canal Treatment: what a root canal treats and what it is for.
