Why Does My Jaw Hurt on Only One Side?

November 1, 2025

Woman holding jaw in pain.

Jaw pain that affects only one side can be uncomfortable and concerning, especially if it interferes with eating, speaking, or sleeping. While occasional soreness may not be serious, persistent one-sided jaw pain often points to an underlying issue that shouldn’t be ignored. Understanding the most common causes can help you know when it’s time to seek professional care.

Temporomandibular Joint (TMJ) Disorders
One of the most frequent reasons for jaw pain on one side is a problem with the temporomandibular joint, which connects your jaw to your skull. TMJ disorders can cause pain, clicking, popping, or stiffness, often affecting just one joint. Teeth grinding, jaw clenching, arthritis, or injury can strain the joint and surrounding muscles, leading to localized discomfort.

Teeth Grinding or Clenching (Bruxism)

If you grind or clench your teeth, especially at night, you may overwork the muscles on one side of your jaw. This uneven strain can cause soreness, tightness, and even headaches. Bruxism is often linked to stress, anxiety, or bite misalignment and may occur without you realizing it.

Dental Issues

Problems such as tooth decay, a cracked tooth, or an abscess can cause referred pain that radiates to one side of the jaw. Impacted wisdom teeth are another common culprit, particularly if they’re only present or erupting on one side. In these cases, jaw pain may be accompanied by swelling, sensitivity, or pain when chewing.

Sinus or Ear Problems
The sinuses and ears sit close to the jaw, so infections or inflammation in these areas can cause pain that feels like it’s coming from the jaw. Sinus pressure often worsens when bending forward, while ear infections may be accompanied by ear pain, fullness, or hearing changes.

Muscle Strain or Injury

Sleeping on one side, chewing predominantly on one side, or sustaining trauma to the face can strain jaw muscles unevenly. Even habits like frequent gum chewing or holding your phone between your shoulder and jaw can contribute to one-sided discomfort over time.

When to See a Dentist

If your jaw pain lasts more than a few days, worsens, or comes with symptoms like swelling, fever, limited movement, or difficulty opening your mouth, it’s important to seek professional evaluation. A dentist can check for dental or bite-related issues, while a physician may assess joint, muscle, or sinus-related causes.

One-sided jaw pain is common, but it’s not something you should ignore. Early diagnosis and treatment can help relieve discomfort and prevent more serious complications.

About the Practice

Are you experiencing a dental emergency? At Villagio Family & Cosmetic Dental, no matter the time, we’re here for you, which includes emergency appointments available after hours and on weekends. Anxious to see the dentist? We have two forms of sedation dentistry available to ensure a comfortable experience. No matter the age, we treat children, teens, adults, and seniors. Schedule your appointment online or call (281) 394-4001.