fluoridevernis

Fluoridevernis, or fluoride varnish, is a concentrated topical fluoride preparation applied to the enamel surfaces of teeth to help prevent dental caries. It consists of a fluoride compound suspended in a resin-based varnish that dries to a thin, adherent film on the tooth.

The active fluoride is typically about 5% sodium fluoride. After application, fluoride ions promote remineralization and inhibit demineralization of enamel by forming fluorapatite and calcium fluoride reservoirs at the tooth surface. The varnish’s resin binder helps retain fluoride on the tooth for an extended period.

Indications include prevention of caries in children and adolescents at elevated risk, after eruption of new dentition, following orthodontic treatment, and in patients with enamel defects or dentin hypersensitivity (depending on the formulation).

Procedure typically involves cleaning and drying the tooth surfaces, applying a small amount of varnish with a microbrush, and allowing it to set into a thin film. Patients are advised to avoid eating or drinking for about 30 minutes after application to maximize retention and efficacy.

Efficacy and safety: Systematic reviews support fluoride varnish for reducing new caries lesions in primary teeth and in high-risk groups; evidence for permanent dentition is more variable. Side effects are usually minor, including transient taste changes or mild local irritation; staining of untreated areas can occur in rare cases. Ingestion should be minimized, especially in young children, and applications are performed by dental professionals.

Limitations and considerations: The preventive effect is temporary and often requires repeat applications at intervals determined by caries risk. Fluoride varnish complements, but does not replace, daily fluoride toothpaste use and other preventive measures.