Does fluoride diffuse through calculus?

Fluoride diffusion through calculus is generally considered to be ineffective, making the assertion that fluoride does not diffuse through calculus accurate. Calculus, or dental tartar, is a mineralized deposit that forms on teeth, creating a hard surface that acts as a barrier. This barrier hinders the penetration and movement of fluoride ions, limiting their ability to provide any preventive benefits in reducing caries or aiding in remineralization of the tooth structure beneath or around the calculus.

Fluoride is most effective when it is in contact with the enamel surface of teeth, promoting remineralization and inhibiting demineralization. However, once calculus has formed, it can obstruct the direct contact that fluoride would need to effectively diffuse into the enamel or dentin areas that require treatment.

This understanding is critical when considering the role of fluoride in dental hygiene and treatment strategies, especially in patients with significant calculus accumulation. Regular professional cleanings and good oral hygiene practices are essential for removing calculus and allowing fluoride to have its optimal effect on tooth health.