Why Do My Teeth Hurt? 7 Common Causes Explained by a Dentist

Tooth pain can range from mildly annoying to completely disruptive — but no matter the severity, it’s a sign that something needs attention. Dr. Tracey Y. Cook, DDS shares the most common reasons people experience tooth pain and how to know when it’s time to schedule a visit.

1. Cavities

One of the top causes of tooth pain. Cavities often start small and painless but become sensitive as decay reaches deeper layers.

2. Gum Disease

Swollen, bleeding gums or deep aches can be caused by gingivitis or periodontal disease.

3. Tooth Sensitivity

Cold, hot, or sweet foods causing sharp pain may point to worn enamel or gum recession.

4. Cracked Teeth

A hairline fracture can cause sharp pain when biting.

5. Infection or Abscess

If pain is extreme or throbbing, an infection may be present and requires urgent treatment.

6. Teeth Grinding (Bruxism)

Often happens at night; leads to jaw pain, headaches, and worn teeth.

7. Sinus Pressure

Sinus infections can make upper teeth feel tender or achy.

When to Call the Dentist

If pain lasts longer than 24–48 hours, schedule a visit with Dr. Tracey Y. Cook, DDS to determine the cause and prevent further damage.