When decay is very deep or a tooth nerve is accidentally exposed during a filling — but the pulp is still healthy — pulp capping uses a biocompatible material to protect and seal the nerve, allowing the tooth to heal from within. For the right cases, it’s a conservative alternative to root canal treatment.
Decay is very deep and close to the pulp — but no actual exposure. A thin layer of affected dentin is left in place and covered with biocompatible material to allow remineralization. Used to avoid the risk of pulp exposure that complete excavation would create.
The pulp has been exposed — either from decay removal or a small mechanical exposure during a filling. If the pulp is healthy (no signs of irreversible inflammation), capping material is placed directly over the exposure to seal and protect it.
A small portion of the coronal pulp is removed, and the remaining healthy pulp is protected with capping material. Used when the exposure is larger or there's superficial pulp inflammation but deeper pulp is still healthy.
The dental pulp (living tissue containing nerves and blood vessels) keeps the tooth vital, hydrated, and sensate. When decay gets very deep or a pulp exposure occurs during treatment, the goal is to preserve that living tissue. Pulp capping places a protective medicament (MTA or calcium hydroxide) directly over the exposed or near-exposed pulp — sealing it and stimulating formation of a protective calcified barrier (dentin bridge).
30–60 min
~75–85%
Local
typically covered as part of restorative treatment
✓ Healthy pulp — no spontaneous pain, no prolonged sensitivity, no abscess ✓ Small or mechanical exposure (not from extensive decay reaching the pulp) ✓ Controlled bleeding at the exposure site — indicates healthy pulp tissue ✓ No periapical pathology on X-ray ✓ Patient is younger — pulp healing capacity declines with age
– Spontaneous or lingering pain— indicates irreversible pulpitis – Large carious exposure — bacteria have contaminated the pulp – Uncontrolled bleeding at exposure— sign of pulp inflammation – Periapical pathology on X-ray — infection has reached the bone – Necrotic or non-vital pulp — pulp capping cannot revive dead tissue
"Pulp capping is a conservative, tooth-preserving procedure — but only when the pulp is genuinely healthy enough to respond. We assess bleeding response, symptoms, and X-ray findings before recommending it. If the pulp shows signs of irreversible inflammation, we recommend root canal treatment rather than a procedure unlikely to succeed."
"I was told at another office I needed a root canal on a back tooth. Here they evaluated the tooth more carefully and said the pulp was still healthy — they capped it instead. That was 18 months ago and the tooth is perfect."
"My tooth nerve was accidentally nicked during a filling. I was devastated thinking I'd need a root canal. They capped it immediately, monitored it for a year, and it healed completely. I still have a vital tooth."
When pulp capping isn't appropriate or has been unsuccessful — root canal treatment saves the tooth by removing the pulp.
Deep cavities requiring pulp capping often also require crown placement to fully protect the remaining tooth structure.
Pulp capping is typically performed as part of a deep filling restoration — completed in the same appointment.
Let us evaluate whether your pulp can be preserved. Schedule at Mosinee Smiles Dental in Mosinee today!
