Which term describes fluoride applied directly to the teeth?

Topical fluoride refers to fluoride that is applied directly to the surface of the teeth. This method of fluoride application is commonly used in various forms such as gels, varnishes, foams, and rinses during dental visits or can be utilized at home with toothpaste and mouth rinses that contain fluoride. The primary purpose of topical fluoride is to enhance the remineralization process of tooth enamel, making it more resistant to decay.

When applied to the teeth, topical fluoride works by reducing the solubility of enamel in acid, promoting the uptake of the minerals in the saliva, and inhibiting the growth of bacteria that produce acid from sugars. This targeted approach is essential in preventive dentistry as it directly addresses areas at risk of developing cavities and can significantly improve oral health outcomes.

In contrast, extrinsic fluoride typically refers to fluoride that comes from outside sources, such as dietary or environmental sources, which may not apply directly to tooth surfaces in the same beneficial manner as topical applications. Systemic fluoride involves fluoride that is ingested and incorporated into the body, helping to strengthen teeth during their development but not providing the immediate protective benefits seen with topical application. The term direct fluoride is not a standard term used in the context of dental health, adding confusion and making it