Light cure calcium hydroxide liner
A light-cured calcium hydroxide liner is a thin resin-based dental material placed near deep dentine to support pulp protection beneath a restoration.
The short answer
This liner contains calcium hydroxide and hardens when exposed to a curing light. It is placed in a thin layer on selected deep dentine, not across the whole cavity or as a bulk filling.
How can calcium hydroxide support thin remaining dentine?
Calcium hydroxide provides an alkaline environment and may support mineralised dentine when remaining dentine is very thin. The dentist removes infected dentine, controls moisture, places the liner selectively, and covers it with restorative material.
What should you know before a liner is placed or removed?
Do not place or remove a liner yourself because use depends on pulp status, cavity depth, isolation, and the restoration. Report lingering sensitivity, spontaneous pain, or pain that wakes you.
Which symptoms after lining need prompt dental review?
Contact the treating dentist if symptoms persist or worsen, especially spontaneous pain, swelling, or lingering hot or cold pain. The pulp may need reassessment.
Why is a liner needed and what will cover it?
Ask how close the cavity is to the pulp, why a liner is indicated, what covers it, and which symptoms would indicate pulp review.
Frequently asked questions
How may calcium hydroxide help when dentine is very thin?
Calcium hydroxide provides an alkaline environment and may support mineralised dentine when remaining dentine is very thin.
What should I do if it persists?
Contact the treating dentist if symptoms persist or worsen, especially spontaneous pain, swelling, or lingering hot or cold pain.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.