If your child's dentist has mentioned a "root canal" on a baby tooth, the more accurate term is usually a pulpotomy or a pulpectomy. These are treatments that remove infected or inflamed nerve tissue from a primary tooth so it can stay in the mouth instead of coming out early. A root canal on a baby tooth, known clinically as a pulpectomy, removes the full nerve from an infected primary tooth and is often used to save a tooth that would otherwise need extraction. It sounds like a big procedure, but for many children it is shorter and calmer than parents expect, and it protects the space the adult tooth underneath will need later.
Key takeaways
- A pulpotomy removes only the infected pulp in the crown of the tooth, leaving healthy nerve tissue in the roots.
- A pulpectomy, the baby-tooth equivalent of an adult root canal, removes all the pulp from the crown and roots.
- Both aim to save a badly decayed or injured primary tooth rather than remove it.
- Saving the tooth helps hold space for the permanent tooth growing underneath.
- Extraction is sometimes still the better option, particularly with extensive infection or a tooth close to falling out naturally.
- Most children recover within a day or two, with mild soreness managed by simple pain relief.
Why baby teeth sometimes need nerve treatment
Deep decay, a knocked tooth from a fall, or a crack that reaches the nerve can let bacteria into the pulp, the soft tissue inside a tooth that contains nerves and blood vessels. Once the pulp is infected, it will not heal on its own. Left untreated, the infection can spread to the gum and jawbone, and in some cases affect the developing adult tooth underneath. Guidance from the American Academy of Pediatric Dentistry supports treating the pulp early, rather than waiting, to give the best chance of keeping a symptomatic primary tooth comfortable and functional until it is due to fall out naturally.
The team at Lumi Dental assesses each situation individually with an exam and, where needed, an x-ray, to work out how much of the pulp is affected and whether the tooth is a good candidate for treatment.
Pulpotomy vs pulpectomy: what is the difference?
Both procedures aim to remove infected pulp and protect the tooth, but they differ in how much tissue is removed and when each is used.
| Feature | Pulpotomy | Pulpectomy |
|---|---|---|
| What is removed | Pulp in the crown only | Pulp in the crown and root canals |
| Typical cause | Deep decay reaching the nerve, healthy root pulp remaining | Nerve is fully infected or has died (irreversible pulpitis or necrosis) |
| Comparable to | A partial nerve treatment | A full baby-tooth root canal |
| Number of visits | Usually one | Usually one, occasionally two |
| Follow-up restoration | Stainless steel crown or filling | Stainless steel crown, usually |
Your dentist decides between the two based on how deep the infection has gone and whether the pulp inside the roots still looks healthy on examination and x-ray.
When extraction is the better option instead
Saving a baby tooth is usually the goal, but it is not always the right call. If a tooth is very close to its natural exfoliation date, if the infection has damaged the bone supporting the permanent tooth bud, or if the tooth structure is too broken down to restore, extraction can be the more sensible path. We cover this decision in detail in our guide to when a child's tooth extraction is needed and what to expect. If a tooth does need to come out early, a space maintainer is often recommended to hold the gap open, which you can read about in our piece on space maintainers for children.
What the appointment looks like for a child
Most children are given local anaesthetic to numb the area, the same as for a filling. The dentist removes the infected pulp, cleans the space, and fills it with a material designed to be reabsorbed as the tooth eventually falls out naturally. The tooth is then usually covered with a stainless steel crown, which is stronger than a filling and less likely to break down before the tooth is due to be lost. Sedation or general anaesthetic is occasionally used for very young or anxious children, but plenty of kids manage the whole visit with just local anaesthetic and some reassurance.
If dental visits make your child anxious, it can help to talk through what to expect beforehand. Our article on a child's first dental visit has some practical tips that apply to any procedure, not just the first one.
Recovery and what to watch for
Numbness usually wears off within a couple of hours. Mild soreness or tenderness when chewing for a day or two is common and typically responds to age-appropriate pain relief such as paracetamol, dosed as directed on the packaging or by your pharmacist. Contact your dentist if your child has increasing swelling, fever, or pain that gets worse rather than better after a couple of days, as this can suggest the infection has not fully resolved.
Why saving the tooth matters
Primary molars in particular act as natural placeholders. They hold space for the permanent teeth developing beneath them and guide those adult teeth into the correct position as they erupt. Lose a baby molar too early and nearby teeth can drift into the gap, crowding out the permanent tooth trying to come through. That is one reason dentists often try nerve treatment before extraction where the tooth is otherwise salvageable, particularly in younger children who still have years before that tooth would fall out on its own.
Frequently asked questions
Does a baby tooth root canal hurt?
The procedure itself is done under local anaesthetic, so children generally do not feel pain during treatment. Mild discomfort for a day or two afterwards is normal and usually manageable with simple pain relief.
How long does treatment take?
A pulpotomy or pulpectomy is usually completed in a single visit of around 30 to 60 minutes, followed by fitting a crown either in the same appointment or a follow-up visit.
Will the tooth turn a different colour afterwards?
Some treated teeth darken slightly over time because the blood supply has been altered. This is usually cosmetic and not a sign of a problem, though your dentist will keep an eye on it at check-ups.
What happens if we skip treatment and just wait?
Untreated infection in a baby tooth does not resolve on its own and can spread to the gum, jawbone, or the developing permanent tooth. In many cases the tooth will need to be extracted anyway, and the space maintained artificially.
Can a baby tooth be extracted instead of treated?
Yes, extraction is sometimes the more practical choice, particularly for teeth close to falling out naturally or with extensive infection. See our guide on child tooth extraction for how that decision is made.
How do I know if my child needs this treatment?
Signs can include a toothache, sensitivity to hot or cold that lingers, a small bump on the gum near a tooth, or visible decay. A dental exam and, where needed, an x-ray will confirm whether nerve treatment is appropriate.
Is a crown always needed afterwards?
In most cases yes, particularly for back teeth, because a tooth that has had its pulp removed is more brittle and prone to fracture under normal chewing forces.
If your child has a toothache or you have noticed decay that needs a closer look, the team at Lumi Dental can talk you through the options at a visit. Check current offers or find out more about our general and children's dentistry in Melrose Park.
This article is general information and does not replace individual advice from your child's dentist.
