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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 ?
The highest values have been attained in ST varnished samples and the lowest values have been attained in SB varnished samples.
The value of total color change ([DELTA]E*) occurring in the varnished samples has generally been determined as a little more in the beech samples when compared to the scotch pine samples.
The a* value of especially PU and ST varnished beech samples heat treated at 200 and 210[degrees]C has significantly decreased and the green color tendency of the samples has increased.
Evaluations of bleached and varnished (water-based varnish) samples revealed that the samples treated with combination 5 had the highest (54.
On the other hand, measurements among the samples varnished after the treatment with combination groups assessed the highest varnish layer hardness in combination 5 treated samples (62.
Average surface hardness of varnished natural samples was 56.