The root canal's smaller sibling

Here's a sentence you don't hear often enough from a root canal specialist: sometimes the nerve can be saved. When decay reaches the pulp but the pulp can still recover, vital pulp therapy removes only the injured part — and keeps the rest of the nerve alive and working.

Why a living nerve matters.

A living pulp defends its tooth: it senses damage, fights bacteria, lays down new protective dentin, and — in young patients — keeps building the root itself. A root canal is an excellent trade when the nerve is dying, but it’s still a trade. A living tooth keeps its blood supply, stays hydrated, maintains some flexibility, and is less brittle. When testing shows the inflammation is reversible, keeping the nerve is keeping the tooth’s own maintenance department.

Who qualifies.

• Deep decay approaching or just exposing the nerve — the cavity is close but the nerve isn't infected yet
• Cold sensitivity that fades quickly — not lingering aches or spontaneous throbbing
• No spontaneous night pain
• Healthy bone at the root tip on imaging
• Especially: young teeth whose roots are still developing, where the blood supply and healing response are strongest
• Traumatic exposures — a recently chipped tooth where the nerve looks healthy

And the honest other side: if the nerve is already dead, the infection is chronic, there’s spontaneous throbbing that wakes you at night, or there’s significant bone loss around the root, the nerve can’t bounce back. A root canal is still the right call — and it works very well. But when we can avoid one, the less treatment the better.

The types of vital pulp therapy.

Not all cases are the same. Depending on how much of the nerve is involved:

The procedure: one visit.

Decay is removed under the microscope, the inflamed pulp taken (the extent depending on the type above), the healthy remainder capped with bioceramic MTA or Biodentine — materials that actually encourage the nerve to form a protective barrier over itself — and the tooth sealed with a strong, tight closure to keep bacteria out. The final decision about how much nerve to take is made in real time, under magnification, based on what the tissue actually looks like: healthy red bleeding means go forward; dark, mushy tissue means pivot to a root canal.

The whole thing usually takes about an hour. Most patients say it felt just like getting a filling.

Success rates and the honest downside.

Success in well-selected cases runs 85–95% — and studies with long-term follow-up (5–10 years) show treated teeth continuing to test as alive and healthy. Patients often forget they ever had the procedure.

After vital pulp therapy, the tooth structure is often preserved well enough that a filling or onlay is all you need — no crown. For young patients with immature root tips, keeping the nerve alive allows the root to finish developing, something a root canal can’t do.

And if the nerve ever declines later, a conventional root canal remains fully available, with nothing lost by having tried. About 5–15% of teeth don’t heal the way we hoped — the inflammation continues, symptoms return, and we end up doing a root canal anyway. It’s not a failure; it’s biology being unpredictable. But those extra years of having a living, functioning nerve still matter.