Light cure calcium hydroxide
A light-cured calcium hydroxide liner is a thin dental material placed under a restoration to protect deep dentine near the pulp.
The short answer
Light-cured calcium hydroxide is a resin-based dental liner that is placed in a deep cavity preparation and hardened with a curing light before the restoration is completed. It forms a protective layer over dentine close to the dental pulp.
What is the direct answer?
What does this question mean?
The pulp is the living centre of a tooth containing nerves and blood vessels. Calcium hydroxide materials are alkaline and can support a protective dentine response, while the resin matrix lets this type of liner be dispensed, shaped, and light-cured in a controlled layer.
What can you do next?
If this material was placed, keep the restoration clean and follow the normal instructions for the filling or crown. Report lingering spontaneous pain, pain that wakes you, or strong heat and cold pain because these symptoms may indicate pulpal inflammation rather than a liner problem alone.
When should you seek dental care?
Return to the dentist if the temporary or final restoration feels high, breaks, or remains painful when biting. Urgent assessment is needed for increasing swelling, fever, pus, or severe toothache.
What should you ask the dentist?
Ask how close the cavity was to the pulp, whether a liner was needed, and which material will cover it. Ask whether the tooth needs a permanent filling, an indirect restoration, or pulp treatment based on its symptoms and examination.
Frequently asked questions
Is light-cured calcium hydroxide a filling?
No. It is a liner beneath a filling or other restoration, not the main replacement for lost tooth structure.
Can a lined tooth still need root canal treatment?
Yes. If the pulp is irreversibly inflamed or infected, a liner cannot replace endodontic treatment.