What Causes Tooth Pain? Common Reasons Explained

Tooth pain is one of the most common reasons people visit the dentist. While it may seem like a small issue at first, persistent tooth pain can be a sign of something more serious. Whether it’s a dull ache or a sharp, throbbing pain, understanding what’s behind your toothache can help you know when to seek professional help.

In this post, your trusted Family Dentist in Montebello explains the most common causes of tooth pain and when it’s time to see a dentist.

1. Tooth Decay (Cavities)

Cavities are the leading cause of tooth pain in both children and adults. When plaque builds up on the teeth, it produces acids that slowly wear away the enamel. As decay progresses, it can reach the inner layers of the tooth, causing pain and sensitivity.

Signs of cavities:

• Sharp pain when eating sweets or cold foods
• Visible holes or dark spots on the tooth
• Pain when biting down

Tip: Regular brushing, flossing, and checkups with your family dentist can help prevent cavities from forming.

2. Gum Disease (Gingivitis or Periodontitis)

Inflamed or infected gums can also lead to tooth pain. Gingivitis is the early stage of gum disease, while periodontitis is more advanced and can lead to tooth loss.

Common symptoms:

• Swollen, red, or bleeding gums
• Receding gum line
• Loose teeth
• Persistent bad breath

Gum disease is often painless in its early stages, which is why regular dental checkups are essential.

3. Tooth Abscess or Infection

An abscess is a pocket of pus caused by a bacterial infection. It typically occurs at the root of the tooth or in the gums. Abscesses can cause intense, throbbing pain that may radiate to the jaw, neck, or ear.

Signs of an abscess include:

• Severe toothache
• Swelling in the face or jaw
• Fever
• Bad taste or odor in the mouth

Important: A dental abscess is a serious condition that needs immediate attention. If you suspect an infection, visit your family dentist in Montebello right away.

4. Cracked or Damaged Teeth

A cracked tooth can occur from biting something hard, grinding your teeth, or even an old filling giving out. Pain may come and go depending on the crack’s depth and location.

What to watch for:

• Pain when chewing
• Sensitivity to temperature
• Intermittent discomfort
• Dental bonding, crowns, or root canal therapy may be needed to repair the tooth.

5. Sinus Infections

Sometimes, tooth pain isn’t dental at all. A sinus infection can cause pressure and aching in the upper back teeth, as the roots are located close to the sinuses.

Other sinus symptoms:

• Stuffy nose
• Facial pressure
• Headache

If your pain is accompanied by cold-like symptoms, it may be sinus-related.

6. Teeth Grinding (Bruxism)

Grinding your teeth, especially at night, can wear down the enamel and stress the jaw muscles. Over time, this can lead to tooth sensitivity and chronic pain.

Signs include:

• Jaw soreness
• Flattened or chipped teeth
• Headaches upon waking

A custom night guard from your dentist can help protect your teeth from grinding.

When to See Your Family Dentist in Montebello

If your tooth pain:

• Lasts more than 1–2 days
• Is severe or throbbing
• Comes with swelling or fever
• Is affecting your ability to eat or sleep

Don’t delay. It’s time to visit a professional. Prompt care can prevent complications and save your smile.

Final Thoughts

Tooth pain should never be ignored. It’s your body’s way of signaling that something isn’t right. By understanding the most common causes—and staying on top of regular dental care—you can keep your smile pain-free.