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Why Does My Tooth Hurt? Four Reasons for a Severe Toothache

Four Reasons for a Severe Toothache
Four Reasons for a Severe Toothache

“Mommy, my tooth hurt!” No parent wants to hear those words. Severe tooth pain is enough to bring many adults to tears — and it’s even worse for children! There are several things that can cause minor toothaches. However, when the pain is severe, there’s a good chance that you have an infected tooth or a serious problem that requires immediate attention. We’ve outlined four of the most common causes of severe toothaches and a symptom checklist. If you’re experiencing any of these, be sure to see your local dentist as soon as possible.

1. A cracked tooth

If you or your child has a sports injury or a nasty fall, you may have a cracked or fractured tooth. But did you realize that you can crack a tooth from something as simple as grinding your teeth? Even a microscopic crack can cause extreme pain. Some teeth may be severely damaged and must be removed.

What causes a cracked tooth?

There are several ways you can crack a tooth. These include:

  • Biting on hard foods or chewing ice can cause your teeth to crack. Be very careful if your children have a fondness for hard candy. It’s one of the main culprits!
  • Uneven chewing pressure can also damage your teeth.
  • If you have undergone endodontic therapy or root canal treatment, your teeth may be somewhat brittle. As a result, they are more susceptible to fracturing or cracking.
  • Accidents or sports injuries that involve a blow to the mouth are the most obvious reasons your tooth could be damaged.
  • Weak tooth structure can also cause problems. If you have had a large cavity filled or other dental restorations, you are at greater risk for a cracked tooth.

What are the symptoms of a cracked tooth?

If you have any of the following symptoms, give us a call:

  • Sensitivity to hot or cold foods
  • Pain that causes you to chew only on one side of your mouth
  • Sharp pain when you bite down on certain foods
  • Sensitivity to sweet or sour food

While these are the most common symptoms, sometimes there are no signs at all. In cases like that, a dental X-ray is necessary to pinpoint the exact location and extent of the crack.

2. An abscessed tooth

Some severe tooth pain may come and go, but pain associated with an abscessed tooth is constant and miserable. You can even feel the pain in your jawbone!

What causes an abscessed tooth?

An abscessed tooth occurs when bacteria infects the dental pulp. The pulp is the soft tissue inside your tooth. Think of it this way: if your tooth was an orange, the peel would be the white outer enamel. This is the part that you see. The pulp would be the soft part of the orange located underneath the peel. The pulp contains blood vessels and nerves, so any infection causes a lot of pain. Bacteria may enter the pulp through a crack or a large cavity.

What are the symptoms of an abscessed tooth?

Symptoms include:

  • Facial swelling
  • Swollen lymph nodes
  • Fever
  • Sensitivity to hot or cold
  • Pain when biting or chewing
  • A severe toothache with pain that may affect the neck, ear, or jaw

You cannot treat an abscessed tooth at home. Even if the pain goes away, you must be treated by a dentist. If not, the infection can spread to your neck or jaw. Without treatment, you may even develop a serious, life-threatening condition called sepsis. Sepsis means the infection is spreading throughout your body.

3. Impacted wisdom teeth

Wisdom teeth can cause a wide range of problems. Often, there is not enough room for these teeth to come in properly, and they become impacted. This means that the tooth is not coming in straight or it’s not in the correct position.

What causes impacted wisdom teeth?

If there’s not enough room in your mouth for your wisdom teeth to come in properly, they’ll become impacted. Impacted wisdom teeth can not only cause pain — they can also damage neighboring teeth. There’s a 75 percent chance that at least one of your wisdom teeth will be impacted. For these reasons, wisdom teeth are typically removed before the age of 24. For more information, you can check out these pictures of the different types of wisdom tooth impactions.

What are the symptoms of impacted wisdom teeth?

First, only a dental X-ray can determine if you have impacted wisdom teeth. Sometimes, there is no indication… until they become a problem. If that’s the case, you may experience:

  • Jaw pain
  • Bad breath or a terrible taste in your mouth
  • Tender gums
  • Swollen jaw
  • Bleeding gums
  • Difficulty opening your mouth

If your wisdom teeth are impacted, it’s important to schedule regular dental X-rays so your dentist can keep a close eye on them.

4. A deep cavity

First, let’s make one thing clear: any cavity can cause pain. However, when you have a very deep cavity, the pain reaches a whole new level.

What causes cavities?

It’s a recipe for dental disaster: sugars + bacteria = acids that attach your teeth. These acids wear away the outer part of your tooth (called the enamel). If they aren’t filled, the cavities may grow and become so deep that they damage the soft inside of your tooth (the pulp).

What are the signs that you may have a cavity?

Some of the symptoms of a deep cavity are:

  • Sharp tooth pain, particularly when eating something sweet, cold or hot
  • Toothache
  • Pain when biting or chewing
  • Sensitive teeth
  • Holes or pits in your teeth

Cavities are much more common in children, so it’s important to teach your children good habits such as brushing and flossing regularly. If you have any questions, let us know. We love working with children and we consider it a privilege to serve your entire family.

How to Soothe Your Tooth Pain Until You Get to Your Dentist

Sometimes, using a hot or cold compress can relieve pain. Often, over-the-counter medication can also help. However, before giving your child over-the-counter medication, be sure you carefully read the label to see if the medication is appropriate for children. Also, be wary of using herbal remedies. These may interact with any prescription or over-the-counter medications you are taking. Make sure your dentist is aware if you are taking these or other natural remedies. We don’t want you to suffer from tooth pain! If you have any of the symptoms described above, we encourage you to take advantage of our walk-in appointments. __________ Dental Express offers dental care for the entire family, including SmileCorrect, implants, emergency dental care and maintenance services. Our practice features compassionate care coupled with state-of-the-art dentistry at four convenient locations in San Diego: Downtown, Point Loma, Clairemont and Santee. Contact us to schedule an appointment today. __________


American Association of Endodontists. “Tooth Pain.” Online. American Dental Association. “Do You Have a Cracked Tooth?” Animated Online. The Mayo Clinic. “Toothache: First Aid.” Online. “Tooth Abscess: Symptoms and Causes.” Online. “Impacted Wisdom Tooth Pain-Symptoms.” Online. “Tooth Decay and Symptoms.”

Common Causes Of Severe Tooth Pain

Common Causes Of Tooth Pain
Common Causes Of Tooth Pain

Causes of Toothache 

People get toothache because of various reasons, and the most common among them are, 

  • Cracked tooth 
  • Hum disease
  • Cracked tooth 
  • Tooth grinding and clenching 
  • Abscessed tooth 
  • Any kind of damaged dental restoration

Common causes of severe tooth pain: Drinking a cold glass of lemonade or enjoying an ice cream treat is a refreshing way to get relief from the summer heat… until contact with that cold delicacy causes a stabbing, throbbing pain to shoot through your tooth. There are many different tooth pain causes. Only a dentist can determine if the problem is caused by a sensitive tooth, a cavity, or something more extensive such as an abscess or infection. Following are some of those common culprits:

Cavity Pain

Tooth decay is one of the most common causes of tooth pain and causes severe tooth decay pain. A cavity can cause sensitivity to hot or cold food. While toothpaste for sensitive teeth can help, if the pain continues, you may have deep decay that has spread to the tooth’s pulp. Speak with your dentist and keep regular appointments to get help for cavities.

How Cold Sensitivity is the Common Reason for Tooth Sensitivity?

The enamel is made of dentin and is damaged or starts eroding for various reasons, including gum recession, tooth decay, and many other dental damaging factors. Individuals have this protective covering naturally but once the dentist loses its strength, the tooth surface starts to erode which results in making your tooth surface sensitive to cold and hot foods.

Sensitive Teeth

Teeth that are sensitive to hot and cold foods may have tooth decay, worn tooth enamel, or an exposed root. When the tooth’s protective layer of enamel erodes, dentin – the bony tissue of the tooth – is vulnerable, making teeth sensitive.

Chipped Or Cracked Teeth

A sharp, searing pain (sometimes described as an “electric shock” ) could indicate a cracked or chipped tooth pain. Cracked teeth are caused by accidents, injuries or from chewing on hard objects such as ice. See your dentist for help with tooth injuries.

A Loose Filling

A sharp pain when biting down on food can indicate a loose filling, and this can also cause severe toothache.

Infection / Abscess

When the root of the tooth is infected, it can develop an abscess. This can cause a tooth to feel “hot” due to inflammation that agitates the nerve. Depending the extent of damage, a root canal pain treatment may be needed to repair the tooth. An untreated infection can become serious if it spreads to the jaw bone or other neighboring tissues.

Dental Work

Sometimes teeth are sore or sensitive after dental surgery or dental treatment. Be sure to speak with your dentist before any procedures so you will know what to expect and what to do if you are experiencing unrelieved pain.


Bruxism is the medical term for grinding teeth. Many adults may grind their teeth when they sleep, causing a dull ache in the jaw and upper teeth. Bruxism can wear away tooth enamel, which can lead to cavities or cracked teeth. A dentist can create a customized mouthguard to protect teeth while sleeping.

How to Stop Electric Shock Feeling in Tooth?

Need Tooth Pain Relief?

The easiest way to treat tooth pain is to avoid it. Regular dental checkups can keep your smile healthy and help you avoid some of the complications—and pain— caused by tooth decay. If you do have severe tooth pain, see your dentist as soon as possible because timely intervention can help avoid more costly dental work later.

Dental Express offers dental care for the entire family, including SmileCorrect, implants, emergency dental care and maintenance services. Our practice features compassionate care coupled with state-of-the-art dentistry at four convenient locations in San Diego: Downtown, Point Loma, Clairemont and Santee. Contact us to schedule an appointment today.