Common Causes of Toothaches & Why You Can’t Ignore Them

Tooth Pain: What Your Body Is Trying to Tell You

That tooth pain you’re feeling could be a sign of a bigger problem than you may realize. Your body’s systems work together to send internal signals when something isn’t right—and tooth pain is one of the clearest. A toothache is your body’s way of telling you that your oral health needs attention.

There are many possible reasons for tooth pain, ranging from minor to serious, and our dental team can help pinpoint exactly what’s causing your discomfort.

Common Causes of Tooth Pain

Many people assume something visible must happen to the teeth to cause a toothache, but tooth pain can develop for several reasons—some of which you may never see coming.

Common causes of toothaches include:

• Excess bacteria and plaque buildup
• Cavities or tooth decay
• Gingivitis or advanced gum disease
• Impacted wisdom teeth
• Teeth grinding or clenching (bruxism)

Tooth pain can also present in different ways, such as:

• Inflamed, swollen, or irritated gums
• A bad taste in the mouth caused by infection
• Headaches or facial pain
• Fever
• Pain when pressure is applied
• Sharp, dull, throbbing, or constant aches

Types of Toothaches and What They Mean

Although toothaches are common, there are several different types of tooth pain, each with its own potential cause.

• Dull, persistent aches: This is the most common type of tooth pain and may be caused by an abscessed tooth, teeth grinding, or food trapped between teeth.
• Sharp, jabbing pain: Sharp pain often points to an issue with the tooth’s surface, such as a cracked tooth, loose filling, or damaged dental crown.
• Sensitivity to hot or cold: Temperature sensitivity is commonly linked to worn tooth enamel. If the sensitivity lingers, it could indicate tooth decay, a fracture, gum disease, or exposed tooth roots.
• Severe, throbbing pain: This type of toothache requires immediate dental attention—especially if accompanied by bleeding gums, gum discoloration, or swelling.

Sensitive Teeth

Sensitive teeth are often caused by worn or weakened tooth enamel or exposed tooth roots. However, tooth sensitivity can also result from cavities, cracked or chipped teeth, worn fillings, or gum disease.

Tooth sensitivity is very common and is one of the leading reasons people experience tooth pain.

Gum Disease (Periodontal Disease)

More than three-quarters of Americans over age 35 have some form of gum disease. Gingivitis—the earliest stage—is the most common, while 5–15% develop a more severe form called periodontitis.

Gum disease is typically caused by poor oral hygiene and plaque buildup. Over time, bacteria irritate the gums, causing redness, bleeding, and swelling. While gingivitis often causes little or no discomfort, untreated gum disease can lead to painful toothaches, serious infections, and eventual tooth loss.

Impacted Teeth and Wisdom Teeth Pain

If you’re experiencing pain in your back molars—especially in the upper or lower jaw—and still have your wisdom teeth, they may be impacted and need removal. Impacted teeth that cannot properly erupt often cause significant pain, swelling, and tenderness.

Signs of impacted teeth include a sore, red, or swollen area near the back of the mouth around the molars.

Toothaches Caused by Inflammation

Most tooth pain is caused by inflammation in the soft center of the tooth (the pulp). For example, an untreated cavity can progress into tooth decay, leading to inflammation and pain.

Other causes of inflammation-related toothaches include:

• Gum disease or periodontitis
• Chipped or broken teeth
• Damaged or worn fillings
• Jaw clenching
• Teeth grinding (bruxism)
• Infection at the tooth root

Tooth Decay and Cavities

The most common cause of toothaches is dental cavities. Cavities usually develop due to poor oral hygiene, including infrequent brushing and flossing. Early-stage cavities may not cause noticeable symptoms, making them harder to detect without routine dental exams.

Regular cleanings and dental checkups help catch cavities early and prevent tooth pain. If left untreated, cavities can infect the tooth, lead to abscesses, and eventually cause tooth loss.

Abscessed Teeth

An abscessed tooth is a severe infection that has reached the root tip or surrounding bone. It often results in intense pain, swollen gums, infection, and potential bone loss.

Abscesses commonly develop when a cavity spreads to the pulp chamber. Contact our office immediately if you experience symptoms such as:

• Gum swelling
• Redness or darkened gums
• Pain when biting or applying pressure
• Severe, throbbing pain that does not improve with medication

Cracked Teeth

Cracked teeth can cause significant tooth pain, especially when chewing or biting. They may also lead to extreme sensitivity to hot or cold temperatures. Pain from a cracked tooth may come and go, but if left untreated, the tooth can become infected and may ultimately need extraction.

Non-Dental Causes of Tooth Pain

Not all toothaches originate in the mouth. A sinus infection (sinusitis) is the most common non-dental cause of tooth pain. Because the sinuses lie close to the upper back teeth, inflammation in the sinuses often causes pain that feels like a toothache.

The Dangers of Ignoring a Toothache

The nerves inside your teeth are among the most sensitive in the body, which is why tooth pain is difficult to ignore. While discomfort is often what drives people to seek treatment, the potential complications of an untreated toothache are even more serious.

Delaying dental care can lead to:

• Increased pain and cost: Untreated toothaches can require more extensive procedures such as root canals, crowns, or even tooth extraction.
• Spreading infection: Dental infections can spread beyond the mouth to the jaw, face, neck, heart, or brain. Warning signs include fever, headache, swelling, fatigue, dizziness, rapid breathing, increased heart rate, and stomach pain.
• Life-threatening complications: In rare cases, untreated dental infections can trigger sepsis—a dangerous immune response that may lead to septic shock or death.

When to Seek Immediate Care

If you are experiencing tooth pain or discomfort, call our office right away so we can diagnose the cause and begin treatment. Temporary relief before your appointment may include over-the-counter pain medication, a cold compress, or rinsing with warm salt water.

A toothache accompanied by a fever of 103°F or higher, chest pain, difficulty breathing, confusion, skin rash, or repeated vomiting may indicate a serious medical condition. If these symptoms occur, seek emergency medical care immediately.