What Is a Pulpotomy for Baby Molars
A pulpotomy is a procedure where your dentist removes only the diseased top part of the nerve inside a baby tooth, while preserving the healthy nerve tissue deeper in the root. Unlike a complete pulpectomy (removing the entire nerve), a pulpotomy is a more conservative approach that preserves more of your child's tooth structure while eliminating the infected or exposed nerve tissue. This treatment saves the tooth and maintains its function until it naturally sheds.
When Your Child Needs Pulpotomy
Your dentist might recommend pulpotomy if your child has: a baby molar with the nerve exposed from a deep cavity or accidental exposure during filling removal, trauma that exposed the nerve, or a baby molar with live but inflamed nerve tissue. The key is that some vital (alive) nerve tissue must remain deeper in the root for pulpotomy to work. If the nerve is completely dead or there's already an abscess, complete removal (pulpectomy) or extraction might be necessary instead.
The Pulpotomy Procedure
Your child receives numbing medicine, and your dentist may use laughing gas (nitrous oxide) for anxiety control. Your dentist carefully removes only the diseased or exposed coronal pulp (the top part) using a bur or hand instrument, stopping about 1.5-2mm below the opening. The remaining deeper pulp should look healthy and bleed when cut—bleeding confirms it's still alive.
Once bleeding is controlled, your dentist applies a special medication (called a hemostatic agent) to stop the bleeding and protect the remaining pulp. Finally, a stainless steel crown is placed over the tooth to protect the treated area from recontamination.
Learn more about keeping your child's baby teeth.Hemostatic Agents: What's Applied to Stop Bleeding
Several materials can be applied to stop bleeding and protect the pulp after removal:
Ferric Sulfate: Stops bleeding in 15-30 seconds by creating a protective plug at the tissue surface. Works well, is biocompatible, and has success rates around 85-90%. Affordable and widely used. Mineral Trioxide Aggregate (MTA): A biocompatible material that stops bleeding and promotes healing of the remaining pulp tissue. Success rates are excellent (85-95%), and teeth treated with MTA show the best long-term outcomes. More expensive than ferric sulfate but worth the cost for better results. Formocresol: Historically the most common agent, with good success rates (85-90%), but has fallen out of favor due to concerns about formaldehyde release. Most modern dentists prefer ferric sulfate or MTA instead.Your dentist will choose based on what's best for your child's situation and what produces the most predictable results.
After Pulpotomy: The Stainless Steel Crown
A stainless steel crown is essential after pulpotomy. It protects the treated tooth, prevents bacteria from re-entering, and dramatically improves success rates (90-95% with crown vs 75-85% without). Your dentist fits and cements the crown at the same appointment or within a week.
Your child might have mild sensitivity or discomfort for a few days—normal and manageable with pain medication. Avoid hard, sticky, or crunchy foods on that tooth for a week. Continue normal brushing and flossing of other teeth. For more on this topic, see our guide on Primary Tooth Mobility When To Extract.
Success Rates
Pulpotomy succeeds about 85-95% of the time with proper treatment and stainless steel crown placement. Success means: your child experiences no pain, no signs of infection, the tooth remains healthy, x-rays show normal healing, and normal root shedding occurs when the tooth is ready to fall out. Success rates are significantly higher with MTA than with ferric sulfate, and much higher with crown restoration than without.
Radiographic Monitoring
Your dentist takes x-rays after pulpotomy and at follow-up visits (6 months, 12 months, 24 months) to verify: the tooth is healing normally, no internal root resorption is occurring, periapical bone looks healthy, the permanent tooth underneath is developing properly, and normal physiologic root resorption is progressing as the baby tooth prepares to shed.
When Pulpotomy Isn't Appropriate
Your dentist might recommend extraction or complete pulpectomy instead if: the nerve is already completely dead (necrotic), there's already an abscess with bone loss around the root, the root has already resorbed significantly, or your child can't cooperate with treatment.
Long-Term Success
Studies show that baby teeth treated with pulpotomy (especially with MTA) heal beautifully and function normally until they shed. The treated tooth doesn't cause problems for the permanent tooth developing underneath. Your child's baby tooth serves its purpose—holding space, helping with chewing, and supporting normal development—until the permanent tooth erupts.
Protecting Your Results Long-Term
Once you've addressed pulpotomy - removing infected pulp in baby teeth, maintaining your results requires ongoing care. Good daily habits like brushing twice a day with fluoride toothpaste, flossing regularly, and keeping up with professional cleanings make a big difference in how long your results last.
Pay attention to any changes in your mouth and report them to your dentist early. Catching small issues before they become bigger problems saves you time, money, and discomfort. Your dentist may recommend specific products or routines based on your treatment.
Diet also plays a role in protecting your dental health. Limiting sugary snacks and acidic drinks helps preserve your teeth and any dental work you've had done. Drinking water throughout the day helps wash away food particles and keeps your mouth hydrated.
What to Expect During Your Visit
If your dentist recommends treatment related to pulpotomy - removing infected pulp in baby teeth, knowing what to expect can ease any anxiety. Most dental procedures today are more comfortable than many people expect, thanks to modern techniques and anesthesia options.
Your dentist will explain each step before it happens so there are no surprises. If you feel nervous, let your dental team know. They can offer options to help you relax, including breaks during longer procedures. Many patients find that the anticipation is worse than the actual experience.
After your appointment, your dentist will give you clear instructions for at-home care. Following these instructions closely gives you the best chance of a smooth recovery and great results.
Conclusion
Pulpotomy saves baby molars with exposed or infected nerves, removing the diseased pulp while preserving vital tissue deeper in the root. Combined with a stainless steel crown, success rates are excellent (85-95%). The treated tooth functions normally until natural shedding, protecting your child's dental development and preventing future crowding.
> Key Takeaway: Pulpotomy on a baby molar with exposed nerve tissue is often successful, especially with MTA treatment and stainless steel crown protection. Your child gets numbing anesthesia and a protective crown afterward. Success rates are best (90-95%) when treatment happens promptly and the tooth is properly restored with a crown. Ask your dentist if pulpotomy or another treatment suits your child's specific situation.