Merck Manual

Please confirm that you are not located inside the Russian Federation

honeypot link
Quick Facts



The Manual's Editorial Staff

Last full review/revision Apr 2020| Content last modified Apr 2020
Click here for the Professional Version
Get the full details
Topic Resources

The hard outer surface on your teeth is called the enamel. The pulp is a softer layer deep inside the tooth. The pulp contains the tooth's blood vessels and nerves.

What is pulpitis?

Pulpitis is painful inflammation (swelling) of your tooth pulp.

  • Pulpitis is usually caused by tooth decay

  • Injury to your tooth can also cause pulpitis

  • If treated, mild pulpitis usually gets better with no problems

  • Pulpitis can lead to infection that can spread to your jaw or other parts of your body

  • Dentists treat severe pulpitis by doing a root canal or taking out the tooth



What causes pulpitis?

What are the symptoms of pulpitis?

Pulpitis causes:

  • Toothache with pain that can be mild and come and go, or be severe and there all the time

  • Sensitivity to hot or cold food

  • Sensitivity to pressure on the tooth from chewing

  • Sometimes pain that you feel in your jaw, ear, or head

Pulpitis that involves infection by bacteria usually causes constant pain. The bacteria may form a collection of pus called an abscess Dental Abscess An abscess is a collection of pus. Pus is a mix of white blood cells, dead tissue, and bacteria. It builds up wherever your body is fighting an infection. A dental abscess is an abscess that... read more . Sometimes the infection can spread to other parts of your body. If you have an abscess, the tooth is very painful and is sensitive to pressure or tapping with a dental tool.

How can dentists tell if I have pulpitis?

Dentists will check your tooth's pulp by:

  • Testing to see if your tooth is sensitive to hot, sweet, or cold things

  • Using an electric pulp tester to see if the pulp is alive

  • Tapping on your tooth to see if the nearby tissue hurts

  • Doing x-rays to see how far the problem has spread

How do dentists treat pulpitis?

For mild pulpitis, dentists will take out any decay and fill the cavities. Sometimes dentists use a temporary filling with pain medicine in it for 6 to 8 weeks before putting in a permanent one.

If the pulp is badly damaged and can't be healed, dentists will give you pain medicine and either:

  • Do a root canal to remove the pulp from your tooth and then fill and seal the tooth canal

  • Take out the tooth if it can't be saved

If you have an infection, they'll also give you antibiotics.

NOTE: This is the Consumer Version. DOCTORS: Click here for the Professional Version
Click here for the Professional Version
Others also read
Test your knowledge
Postpartum Depression
Postpartum depression is a feeling of extreme sadness and related psychologic disturbances after delivery of a baby. Although it is common to feel sad or miserable within 3 days of delivery (the baby blues), these feelings usually go away within 2 weeks. Postpartum depression is a more serious mood change. Women in which of the following groups are at increased risk for this condition?
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID

Also of Interest

Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID