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a solution of natural resins and gums or concentrated fluoride used as a protective coating over the surfaces of a dental cavity preparation before restorative material is applied or over a tooth surface after sealing and root planing. Fluoride varnish occludes dentinal tubules, resulting in caries prevention and reduced dental hypersensitivity.


A solution of gums and resins in a solvent. When these are applied to a surface, the solvent evaporates and leaves a hard, more or less flexible film. In dentistry, varnishes are used to protect sensitive tooth areas such as the pulp. Synonym: cavity varnish

cavity varnish


varnish (vär´nish),

n (cavity liner, cavity varnish), a clear solution of resinous material or natural gum, such as copal or rosin dissolved in acetone, ether, or chloroform, which is capable of hardening without losing its transparency. Varnish is used in cavity preparations to seal out dentinal tubules, reduce microleakage, and insulate the pulp against shock from thermal changes.
varnish, fluoride,
n a sticky yellowish protective coating of 5% sodium fluoride in a resin base that is painted over the teeth to prevent dental caries in children and adults. It hardens on contact with saliva. It is also used to reduce root sensitivity. Its effects on enamel fluoride appear to provide a lower risk of accidental fluoride ingestion than most other topical fluoride treatments.
References in periodicals archive ?
Ink industry leaders agree that varnishes and vehicles play an important role in their products.
It has been reported that the amines taking place in the structure of the solvent based varnished turn yellow in time as a result of oxidation, but these chemicals causing to yellowing have not been used in the production of water based varnishes (Johnson, 1997) and in addition; the water based varnishes are the chemical reaction drying ones which do not change the color of the wood material, mostly produced as colorless and scentless and which do not turn yellow (Yildiz, 1999).
Market data on demand volume for each country is split by types of paints and varnishes as well as technology (water based, solvent based, powder coatings, and other products).
Matt Grodd of Kane International Corporation said that vehicles and varnishes work to promote adhesion in ink systems, and offer improved mechanical and chemical performance.
Paints and Varnishes in Philippines to 2018: Market Databook
In addition, the government has increased infrastructure spending, from seven percent of GDP to 10 percent, which indicates the potential for increased infrastructure construction activities that could require paints and varnishes.
In order to determine the usability of ebru staining for wood products and its compatibility with varnishes, adhesion, hardness, and gloss were measured.
There is evidence that NaF varnishes are indeed effective in increasing the fluoride uptake and reducing mineral loss of the enamel under different circumstances.
The current SCAQMD VOC level for varnishes is 350 g/L.
Varnishes ALL varnishes will alter the colour of the timber slightly because they reflect and refract the light differently into the grain of the wood, emphasising its colour.
Oriental beech, Scots pine, and oak samples were coated with synthetic, polyurethane, and acrylic varnishes in different thicknesses.