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material applied to the inside of the walls of a cavity or container for protection or insulation.
cavity liner an agent used to line a tooth cavity for protection of the pulp from irritation and for neutralization of the free acids of zinc phosphate cements.
var·nish (den·tal)(var'nish den'tăl),
Solutions of natural resins and gums in a suitable solvent, of which a thin coating is applied over the surfaces of the cavity preparations before placement of restorations, used as a protective agent for the tooth against constituents of restorative materials.
A layer of material applied to a cavity preparation to protect the pulp of the tooth. It is usually a suspension of zinc phosphate or calcium hydroxide and is used to neutralize the acidity of the base or cement material.
See also: liner