Dental dycal
Dental Dycal is a calcium hydroxide liner placed by a dentist in selected deep cavities to protect the pulp beneath the filling.
What is dental Dycal used for beneath a filling?
Dental Dycal is a calcium hydroxide liner placed by a dentist in selected deep cavities to protect the pulp beneath the filling.
What does calcium hydroxide liner mean in dentistry?
Dycal refers to a dental material containing calcium hydroxide. A thin layer may be placed on dentine close to the pulp, the living tissue containing nerves and blood vessels, while a stronger restorative material covers it.
How does the dentist place a liner in a deep cavity?
A dentist removes infected dentine, assesses the remaining tooth structure and pulp, then places the liner only where indicated before sealing the tooth with a suitable base and restoration. Do not try to apply a cavity material yourself.
When should pain or a broken filling be checked?
Arrange an examination for pain, sensitivity, a visible cavity or a broken filling. Severe spontaneous pain, swelling, fever or difficulty swallowing can indicate pulpal or spreading infection and needs prompt dental assessment.
Does this deep cavity need a liner or another base?
Ask how close the decay is to the pulp, whether the pulp appears healthy, which liner or base is planned and what restoration will seal the tooth. Also ask what symptoms would mean that root canal treatment is needed.
Frequently asked questions
Is Dycal the same as a filling?
No. It is a protective liner beneath a restoration, not the material that normally restores the entire cavity.
Can Dycal stop tooth pain?
It may support protection of a healthy pulp, but persistent or severe pain can mean the pulp needs further treatment.
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.