Why Does My Jaw Hurt When I Chew? Causes and When to See a Dentist

Published by Elena Chachik, DDS Updated On:

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You can feel completely comfortable all day, but something in your mouth might need attention when you chew or bite. Why does it hurt to chew if jaw pain doesn’t bother you at other times? It’s crucial to regard this discomfort, as it can be a sign of temporomandibular disorder that often makes talking, chewing, and yawning painful. We’ll also look into other causes, such as jaw injury, bruxism, tooth infection, gum disease, cracked tooth, and more. You’ll learn advanced treatment options to manage jaw pain, but don’t get into self-medication; seek professional dental care to treat your problem correctly.

Why Does My Jaw Hurt When I Chew? 

Jaw pain while taking meals can manifest itself differently. You can find it uncomfortable to open your mouth, feel stiffness in the temporomandibular joint, or experience a throbbing ache in your jaw after injury. Why do my jaws hurt when I chew is an individual issue, but potential factors are distinctly classified. They vary from grinding your teeth or a toothache to a TMJ disorder that affects the jawbone and joints. All these causes can undermine your oral health and overall well-being, so let’s examine them more precisely.

8 Common Causes of Jaw Pain When Chewing

Chewing discomfort can develop due to different underlying problems that form specific pain patterns. The jaw can hurt while biting into foods, releasing pressure, or appear and cease without an obvious trigger. Accordingly, dentists review several possible causes.

  1. TMJ Disorder (TMD)

TMD is a condition that affects the well-being of the temporomandibular joint, ligaments, and muscles managing lower jaw movement. The jaw can pop, click, or cause intense pain near the ear. TMJ disorder can develop from jaw trauma, chronic grinding of teeth, arthritis, etc. Chewing can only exacerbate irritation and discomfort in the joint, so you can stick to softer foods to alleviate it. Sometimes it’s necessary to correct underlying alignment issues with traditional braces or modern Invisalign treatment to get permanent relief. 

  1. Teeth Grinding and Clenching (Bruxism)

When gnashing your teeth becomes an everyday habit, it can cause a range of symptoms like jaw pain, tooth erosion, and TMJ disorders. It usually happens subconsciously, while awake or asleep, especially during anxious periods. Chewing only adds extra strain on your teeth and jaws, making the sensations more tangible.

  1. Tooth Infection or Abscess

A bacterial infection in the gums or a pocket of pus around it can be another reason why the jaw hurts when I chew. The infection can also affect the surrounding bone and adjacent teeth, so it’s vital to see a dentist if you notice any symptoms of a tooth abscess, such as bad breath.

  1. Cracked Tooth or Dental Problems

A cracked tooth with a fracture running from the biting surface to the gum line can cause sharp pain and swelling. Don’t delay a dental appointment to prevent a crack reaching the root.

  1. Gum Disease

Jaw pain can also arise from a pronounced infection in the gums. If you notice early signs of gingivitis, such as swelling, redness, or bleeding, pay attention to the condition to prevent deterioration and jawbone loss. 

  1. Arthritis in the Jaw Joint

Jaw arthritis can result in symptoms related to TMJ disorders and can worsen over time. It affects the joints, making them inflamed, and often causes jaw-opening problems and noises.

  1. Jaw Injury or Overuse (Excessive Gum Chewing, Hard Foods)

Chewing hurts jaw when it becomes injured, broken, or dislocated. This is considered a dental emergency and requires immediate treatment. Chronic jaw pain from chewing gum or hard foods can mean TMJ and the neighboring muscles have been loaded more than normally. Give up chewing gum when you feel pain and leave your jaw in peace to let it heal.

  1. Sinus Infection and Other Non-Dental Causes

Sinus infections can cause inflammation that puts pressure on jaw joints and facial nerves, often leading to jaw discomfort. Some contagious diseases, such as mumps, can provoke jaw pain due to the swelling of the salivary glands, located between the jaw and ears.

Jaw Pain on One Side When Chewing: What It Can Mean

When my jaw hurts when I chew, but only on a specific side, the source is not always evident without a comprehensive dental examination. It can signify a dental infection, a TMJ issue, bite-related strain, a cracked tooth, wisdom tooth problems, or bruxism. The way your upper and lower teeth align can also affect how pressure is distributed across the jaw.

How Is the Cause of Jaw Pain Diagnosed?

To treat the source of jaw pain, not merely suppress the symptoms, a dentist performs an all-encompassing evaluation of your oral cavity. They usually examine the teeth and gums, assess occlusion, and evaluate how joints and muscles function. Digital X-ray imaging may sometimes be required to identify the underlying cause.

6 Treatment Options for Jaw Pain While Chewing

Timely professional intervention can promote pain-free chewing and enhance overall quality of life. The solution depends on the cause of jaw pain.

  1. Home Remedies and Self-Care

To facilitate your condition, you can start with simple home care. Eat soft foods, avoid teeth grinding, jaw clenching, and fingernail biting. A doctor can also recommend hot or cold compresses to alleviate the ache, but don’t use them without prescription: wrong actions can worsen the sensations.

  1. Night Guards and Oral Splints

Custom-made occlusal guards and other orthodontic devices are aimed at preventing and decreasing bruxism symptoms. Healthcare providers use them to reduce jaw pain and avert premature tooth wear and tear.

  1. Physical Therapy and Jaw Exercises

Gentle stretching exercises can relax tight jaw and neck muscles. Physical therapy is considered an effective treatment for non-invasive TMD management.

  1. Medication

Short-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) or over-the-counter pain medications can help a patient get temporary relief from jaw pain. In case of persistent discomfort, a dentist may prescribe stronger anti-inflammatory or pain medications, antidepressants, and muscle relaxants.

  1. Treating the Underlying Dental Problem

When the jaw hurts to chew, dental treatment is picked individually based on the trigger. Inflammatory processes in the gums, cavities, and an abscessed tooth require different treatment approaches.

  1. Surgery (Severe Cases Only)

When non-surgical methods can’t be applied to your case, you might need to address an oral surgeon. This doctor can help with the consequences of dental trauma, misaligned jaws, malocclusion, and more. Though jaw surgery requires time for the body to heal, it has a high success rate and can solve the problem at the root.

How to Prevent Pain in Jaw When Chewing

Jaw pain prevention encompasses:

  • Wearing a protective mouthguard while playing contact sports to avoid dental injuries;
  • Cleaning your teeth twice a day to prevent caries and gum-related problems;
  • Using an occlusal guard at night if you have bruxism;
  • Visiting a dentist twice a year for thorough dental checkups;
  • Managing stress that can lead to teeth grinding;
  • Quit chewing gum regularly to prevent joint overload;
  • Avoid harmful habits, such as nail-biting or chewing hard foods and objects.

You can always ask your dentist for personalized, in-depth recommendations during a consultation.

When to See a Dentist or Seek Emergency Care 

Beyond understandable discomfort, jaw pain can signal a deeper problem. Let’s see whether your condition needs a dental evaluation or an immediate visit to the emergency room.

Dental-Related IssueNeeds Urgent Care
Dull, throbbing, or sharp painJaw becomes dislocated after dental injury
Discomfort is accompanied by fever, swelling, or a bad taste in your mouth2. Severe swelling 
Pain increases when chewing or speaking3. Difficulty breathing or swallowing
Chest pain 
Shortness of breath

Sudden onset of pain spreading from the chest to the jaw might not be a question of TMJ disorder vs. tooth pain, but may indicate a heart condition. Then it requires immediate attention. If your jaw hurts from chewing for more than a week, schedule a consultation with a dentist to have your condition expertly diagnosed and treated.

Frequently Asked Questions About Jaw Hurting When Chewing

Why is my jaw hurting when I chew but not when I rest?

While chewing, your jaw joints, muscles, and teeth experience significant strain. This can make sensations more prominent. When you rest, the pain can cease, since your jaw muscles and joints aren’t working.

Can jaw pain when chewing go away on its own?

Sometimes. When the culprits of jaw pain are mild stress, muscle fatigue, and temporary gum chewing or eating excessively hard foods, it can resolve on its own. You’d better not risk your oral health and should approach the matter seriously; the stakes are high.

Can a toothache cause jaw pain when chewing?

Yes, jaw pain can originate from a cracked, infected, or decayed tooth. Toothache can spread to the surrounding jawbone, muscles, and joints.

Which foods should I avoid when my jaw hurts?

If it hurts when I chew, do everything to lighten the pressure on the joints and muscles. Prefer soft foods over hard, crunchy, chewy, and sticky ones, and keep away from chewing gum to let your jaw joint rest.

Is jaw pain when chewing a sign of TMJ?

It might be, but not necessarily. Though jaw pain while chewing often signifies a TMJ disorder, it can also point to other dental problems or issues with your overall health. Don’t postpone a visit to a medical professional to get a diagnosis and proceed to treatment.

Additional Resources

Gum chewing might seem an innocent habit, but it has a direct correlation with temporomandibular disorders. If you practice it chronically, this scientific review can help you understand the risks.

Categories: Elena Chachik

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