What is vital pulp therapy?

What is the pulp, and why does keeping it matter?

The pulp is the living tissue at the centre of a tooth — nerves, blood vessels and cells that maintain the dentine around them.

A tooth with a healthy pulp has a blood supply. It can respond to irritation by laying down more dentine, it retains its normal moisture and resilience, and it can tell you when something is wrong. A tooth whose pulp has been removed loses all of that. It becomes more brittle, more likely to fracture under load, and usually needs substantial restoration to protect it.

That is the whole rationale. Root canal treatment is a good treatment and saves teeth that would otherwise be lost — but a tooth that keeps its living pulp is generally in better condition than the same tooth after root canal treatment. So where the pulp can be saved, it is worth trying to save it.

How does the treatment actually work?

The principle is straightforward: remove what is irritating the pulp, control the inflammation, and seal the pulp away from bacteria so it can recover.

The tooth is anaesthetised and isolated with a rubber dam, which matters more here than in most procedures — the treatment depends on keeping saliva and bacteria away from the exposed pulp. Decay is removed. If the pulp is exposed, it is assessed directly: how it bleeds, and how readily the bleeding stops, is one of the practical indicators of how inflamed the tissue is.

Where only the surface of the pulp is inflamed, that superficial layer may be removed until healthy tissue is reached. This may be a shallow removal, or the whole pulp in the crown of the tooth while leaving the pulp in the roots intact.

A bioactive material — typically a calcium silicate cement — is then placed directly against the pulp. These materials are alkaline, seal well against dentine, and encourage the pulp to lay down a barrier of new dentine beneath them. The tooth is then restored with a bonded restoration that seals properly, because a leaking restoration over a capped pulp will fail regardless of how well the capping was done.

The seal is not a finishing step, it is part of the treatment. Most vital pulp therapy that fails does so because bacteria reached the pulp again, not because the capping material was wrong.

Does this regrow a nerve or regenerate a tooth?

No. This is worth being blunt about, because there is a great deal of misleading material online.

Vital pulp therapy preserves pulp tissue that is already alive. It does not bring a dead nerve back, it does not regenerate a pulp that has been lost, and it does not regrow enamel or replace missing tooth structure. It involves no stem-cell therapy and no tooth regrowth of any kind.

The one genuine biological effect is that a healthy pulp, once protected and sealed, can form a layer of new dentine beneath the capping material — a barrier the tooth builds itself. That is a real and well-documented repair response of living tissue, and it is the extent of it. The nerve does not regenerate; it survives.

If a tooth's pulp is already dead or infected, no material and no technique will revive it. In that situation the honest options are root canal treatment or extraction, and a practice that tells you otherwise is selling you something.

Which teeth are suitable?

Case selection is the single biggest determinant of whether this works, which is why it cannot be assessed from symptoms alone or over the phone.

Broadly, the treatment is considered where the pulp is judged still vital and capable of healing — the tooth may have been sensitive, but not in the pattern that indicates established irreversible inflammation. The exposure is typically caused by removing decay or by a fracture, rather than by long-standing infection. The tooth must be restorable with a restoration that will seal, and there must be no sign on the radiograph of infection at the root tip.

It is generally not appropriate where the pulp is necrotic, where there is a sinus tract or gum boil, where there is spontaneous night pain or lingering pain to heat, where radiographs show a lesion at the root tip, or where the tooth cannot be sealed adequately.

Age, medical history and how long symptoms have been present all feed into the judgement as well. Two teeth that look identical on a photograph can have very different prognoses.

• The pulp is assessed as vital, with inflammation judged reversible or confined
• The exposure arose from decay removal or trauma rather than long-standing infection
• No spontaneous or lingering pain, particularly not pain that wakes you at night
• No swelling, sinus tract or radiographic sign of infection at the root tip
• Enough sound tooth structure remains to place a restoration that will seal reliably
• You are able to attend follow-up reviews so the tooth can be monitored

What if it does not work?

Then the tooth generally proceeds to root canal treatment, or in some cases extraction — the same options that existed before.

This is the trade-off, and it should be explained before you agree to treatment rather than after. If vital pulp therapy succeeds, you keep a living tooth and avoid a root canal. If it fails, you have had an additional procedure and additional cost on the way to the root canal you might have had at the outset. Failure does not usually make the tooth worse than it would have been, but it does not make the earlier appointment free either.

Failure is not always painful. A pulp can deteriorate quietly, which is why follow-up reviews with radiographs are part of the treatment and not an optional extra. Symptoms to report in the meantime are spontaneous pain, pain that lingers after hot or cold, pain on biting, swelling, or the tooth darkening.

Anyone offering this treatment should discuss the alternatives with you, including conventional root canal treatment, and should be willing to say how likely they think it is to succeed in your particular tooth — including when they are uncertain.

What does vital pulp therapy cost?

Between R950 and R1 500 at this practice, depending on the technique used and the bioactive material the tooth needs.

That figure covers the pulp treatment itself. The tooth still needs restoring afterwards — a filling, or where more structure has been lost, a fibre-reinforced restoration — and that is quoted separately.

The cost comparison is worth understanding properly, because it cuts both ways. Vital pulp therapy is considerably less expensive than root canal treatment, and a tooth that keeps its nerve is generally less brittle and less likely to need a crown afterwards. But if the treatment does not succeed, you will have paid for it on the way to the root canal you might otherwise have had first.

That is the honest position. It is not a cheaper substitute for a root canal; it is an attempt to avoid needing one, with a real chance of success on the right tooth and a real cost if it fails.

Whether your tooth is a reasonable candidate is a clinical judgement made after examining it and reviewing radiographs — not something that can be decided from a price list.

Common questions

Related

• Can I avoid a root canal?→
• What is biomimetic dentistry?→
• I have cracked a tooth — what now?→
• Is there an alternative to a crown?→
• Advanced treatments→
• Paediatric dentistry→