What is a pulp polyp inside a damaged tooth?

Have you noticed a pink or red bump growing out of a damaged tooth? It’s natural to wonder what it is and whether it’s serious. It may be a pulp polyp, a growth of inflamed tissue from inside the tooth, and a dental exam is how you find out what it is and what your tooth needs.¹ 

What you'll learn: 

• Why exposed pulp can grow into an open cavity 

• Why a tooth's appearance and pain level don't tell the whole story 

• What your dentist checks before recommending treatment 

• When treatment may preserve the tooth and why root development matters 

Ready to get your tooth checked? An Aspen Dental provider can examine the area, talk through your options and help you understand what comes next.

What causes a pulp polyp? 

The pulp is the soft tissue at the center of your tooth. It contains nerves and blood vessels. Normally, the hard layers around it keep it protected. 

Deep decay or an injury can leave that tissue exposed. With ongoing inflammation, some of the pulp may grow outward into the opening. Dentists call this chronic hyperplastic pulpitis. In everyday language, that means inflamed pulp tissue has grown beyond its usual space.¹

Even if the area doesn’t bother you much, it’s worth having a dentist look at it. Your dentist will assess the growth and the tooth around it together. 

What does a pulp polyp look like and feel like? 

A pulp polyp usually fills the open cavity of the damaged tooth. It can sit on a narrow stalk or spread from a broad base, and it is usually covered by a thin layer of surface tissue.¹ 

Pain isn't a dependable way to judge the health of the pulp. A tooth can have inflamed pulp without any noticeable symptoms.² If you notice bleeding, discomfort when eating or a change in the growth, tell your dentist. Those details are useful, but none confirms the diagnosis on its own. 

It’s best to leave the area alone and let your dental team examine it safely. 

How does a dentist identify a pulp polyp? 

Your dentist will examine the damaged tooth and surrounding gums, ask about your symptoms and review any previous injury or dental treatment. They may check the tooth's response to cold or other tests and take X-rays. These findings need to be considered together.²

Because different conditions can look alike, the exam is also how your dentist works out what the growth actually is.¹ 

X-rays help show changes in the tooth and around its roots, but like any single exam tool they have limits, so your dentist weighs them together with your symptoms and test results.² If the findings are unclear, your dentist may recommend further evaluation or refer you to an endodontist.² An endodontist is a dentist with at least two years of advanced training who limits their practice to problems inside the tooth and around its roots.¹ 

Your provider can walk you through what shows up on the images and how it affects your options. 

How is a tooth with a pulp polyp treated? 

Treatment addresses the damaged tooth and its pulp, not just the visible bump. Your dentist considers how much tooth remains, the condition of the pulp and roots and whether the tooth can be restored.³ 

Can some of the pulp be preserved? 

In some young teeth, a treatment called a pulpotomy removes the affected pulp from the upper part of the tooth and keeps the healthy living tissue deeper inside.¹ Because that tissue helps a young permanent tooth’s roots keep developing, saving it can matter.³ Whether this approach fits depends on the clinical findings.³ 

That’s why your dentist may talk about how developed the roots are when treating a child’s tooth.³ The treatment decision involves more than the size of the growth you can see. 

When might a root canal or extraction be needed? 

Root canal treatment removes diseased pulp, cleans the canals and seals them. A crown is then usually placed to protect the tooth.⁴ Your provider can explain what to expect before and after a root canal if that's the recommended option. 

Dentists consider extraction when an infection can’t be controlled, the bone can’t support the tooth or too little tooth remains to hold a crown or other filling.³ That decision depends on the whole tooth, not just the growth.³ 

When should you have the tooth checked? 

Contact a dental provider when you notice a growth inside a damaged tooth. Mention any pain, bleeding or swelling when you call so the team can advise you about appointment timing. Don't wait for severe pain before asking for help. 

If you've spotted a change and aren't sure what it means, schedule an examination with your local dental provider to discuss your next step. 

What is a pulp polyp inside a damaged tooth? FAQs 

Can antibiotics treat a pulp polyp? 

Antibiotics don’t repair a damaged tooth. They don’t treat inflamed pulp itself, although they may lower the chance of a delayed case turning into an infection.⁴ Whether any medication makes sense for you is a question for your dentist after an exam. 

What should I tell my dentist before the appointment? 

Share when you first noticed the growth, whether the tooth broke or lost a filling and any changes in pain or eating. Bring your medication list and mention any dental anxiety. You don't need the right terminology to explain what's happening or ask for support. 

Will I need follow-up visits after treatment? 

Your dentist will explain the follow-up schedule for your procedure. After pulp therapy in a developing tooth, examinations and X-rays help monitor healing and check for problems.³ Keeping those visits matters even when the tooth feels comfortable. Ask when to return and which changes your team wants you to report. 

Sources 

¹ American Association of Endodontists: “Glossary of Endodontic Terms.” https://www.aae.org/specialty/clinical-resources/glossary-endodontic-terms/ 

² American Association of Endodontists, Endodontics Colleagues for Excellence: “Endodontic Diagnosis.” https://www.aae.org/specialty/wp-content/uploads/sites/2/2017/07/endodonticdiagnosisfall2013.pdf 

³ American Academy of Pediatric Dentistry, The Reference Manual of Pediatric Dentistry: “Pulp Therapy for Primary and Immature Permanent Teeth.” https://www.aapd.org/media/Policies_Guidelines/BP_PulpTherapy.pdf 

⁴ Cleveland Clinic, Health Library: “Pulpitis.” https://my.clevelandclinic.org/health/diseases/23536-pulpitis