How Long Will a Toothache Last?

Last Updated: October 12, 2026

Introduction

How long a toothache lasts depends entirely on what is causing it. Pain from something minor, like a bit of food wedged against the gum, can ease within a day or two, but pain from a cavity, a cracked tooth, or an infection will keep returning until the cause is treated. The American Dental Association does not give a waiting period for either case: its guidance is that "a toothache should be evaluated by a dentist right away."

What Decides How Long a Toothache Lasts?

There is no single answer, because a toothache is a symptom rather than a diagnosis. The ADA lists several possible causes behind tooth pain, including a cavity, gum disease, an abscess, and an impacted tooth. Jaw pain can also come from sinus problems, an injury, teeth grinding, or a jaw joint problem.

That range is why a timeline is hard to promise. The pain will last as long as the cause is active, which is also why the ADA ties prompt evaluation to protecting the tooth: having it looked at early helps prevent the tooth from dying.

What Causes a Toothache?

The cause sets the expectation. These are the common ones named by the ADA and the National Institute of Dental and Craniofacial Research:

Our article on the causes of a toothache goes through these in more detail.

Why Does a Toothache Fade and Then Come Back?

Pain that comes and goes is common, and it is not a sign that the problem has resolved. NIDCR describes decay as a process that continues once more minerals are lost than the tooth can replace, and explains that untreated decay can lead to pain, infection, and tooth loss.

The infection side is where fading pain is most misleading. The ADA warns that if an abscess is not treated, "it can lead to a serious infection in the jaw bone, teeth, and surrounding tissues." A quieter tooth is not necessarily a healthier one.

When Should I See a Dentist for a Toothache?

The ADA's answer is right away. Beyond that, call promptly if you notice any of these, which the ADA associates with an abscess or with problems needing diagnosis:

• Swelling in your gums, face, or jaw
  
• Redness in the gums
  
• A bad taste in your mouth
  
• Fever
  
• Pain when biting or chewing
  
• Pain that keeps returning, even if it eases in between

When Is a Toothache an Emergency?

Some situations should not wait for a routine appointment. The ADA's clinical guidance on dental pain and swelling states that patients "should be referred for urgent evaluation if their condition worsens, they develop a deep space infection, or sepsis is suspected."

In practice, that means getting seen the same day if your swelling is spreading, your pain is escalating quickly, or you feel unwell along with the tooth pain. The ADA also advises that if your dental office is closed during an emergency, go to a local emergency room.

What Can I Do Until My Appointment?

The ADA's first-aid guidance for a toothache is simple, and none of it treats the cause:

• Rinse your mouth with warm water to clean it out
  
• Use floss gently to remove any food trapped between your teeth
  
• Apply a cold compress to the outside of your face if there is swelling
  
• Do not place pain medication directly against the tooth or gums, which the ADA warns can burn gum tissue

If the pain persists, the ADA says to contact your dentist. Ask your dentist or pharmacist if you are unsure which pain reliever is appropriate for you.

How a Dentist Treats the Cause

Shortening a toothache means treating what is behind it. NIDCR explains that decay caught early, before a cavity forms, can sometimes be reversed with fluoride, while a cavity is treated by removing the decayed tissue and restoring the tooth with a filling.

For an abscess, the ADA lists drainage, cleaning between the tooth and gum when gum disease is the cause, root canal treatment when decay or a cracked tooth is the cause, and antibiotics in some cases. Which of these applies depends on the exam.

How Alpine Dental Helps

Alpine Dental treats tooth pain at our Lakewood and Jackson, NJ offices, including dental emergency care and fillings for decay. Call and describe your symptoms, especially if you have swelling or a fever, so the team can advise you on how soon to be seen. Book an appointment with us, whether root canals are performed in-house or referred out, and what patients should do after hours. 

So how long will a toothache last? As long as its cause goes untreated, which is why the answer is less about waiting and more about getting it looked at. Pain with swelling, a fever, or a bad taste deserves attention the same day.

Call Alpine Dental at (732) 934-1888 to have your tooth pain evaluated.

Frequently Asked Questions

How long does a toothache usually last?

It depends on the cause. Pain from minor gum irritation can settle quickly, while pain from decay, a cracked tooth, or an infection continues until the cause is treated. The ADA advises having any toothache evaluated right away rather than waiting to see whether it passes.

Will a toothache go away on its own?

Sometimes the pain does, but the cause usually does not. NIDCR notes that untreated decay can lead to pain, infection, and tooth loss, and the ADA warns that an untreated abscess can spread to the jawbone and surrounding tissues.

Why does my toothache keep coming back?

Because the underlying problem is still there. Pain that eases and returns is common with decay and with an abscess, and it is not evidence that the tooth has healed. An exam is the only way to find out what is driving it.

Can a toothache be an emergency?

Yes. The ADA guideline calls for urgent evaluation if your condition worsens, a deep space infection develops, or sepsis is suspected. Spreading swelling, quickly escalating pain, or feeling unwell with tooth pain should be treated as urgent, and the ADA advises going to an emergency room if your dental office is closed.

Does tooth pain always come from a tooth?

Not always. The ADA notes that jaw pain can stem from sinus problems, arthritis, an injury, teeth grinding, or a jaw joint problem such as TMJ, and that a dentist may use an exam and X-rays to locate the source.

SOURCES:

• https://www.mouthhealthy.org/top-dental-symptoms
• https://www.mouthhealthy.org/all-topics-a-z/abscess
• https://www.mouthhealthy.org/dental-care/dental-emergencies/
• https://www.cdc.gov/antibiotic-use/media/pdfs/ada-treatment-guidelines-508.pdf
• https://www.nidcr.nih.gov/health-info/tooth-decay
• https://my.clevelandclinic.org/health/diseases/10957-toothache