A topical fluoride application
A. can increase hypersensitivity
B. promotes remineralization
C. is applied deep inside the tooth
D. may increase the risk of dental caries
The correct answer and explanation is:
The correct answer is B. promotes remineralization.
Topical fluoride applications are an important preventive measure in dental care, primarily used to help prevent tooth decay and promote the remineralization of enamel. The fluoride works by penetrating the outer layers of the tooth, where it can interact with the minerals in the enamel and strengthen the tooth structure. When fluoride is applied topically, it can help rebuild weakened enamel and make it more resistant to acid attacks from food, beverages, and bacteria.
Fluoride promotes remineralization by attracting calcium and phosphate ions to the tooth surface, which are essential for strengthening the enamel. This process helps repair areas of the enamel that have been demineralized due to the presence of acid. As a result, topical fluoride helps maintain healthy teeth and prevent cavities from forming.
Here’s a breakdown of the other options:
A. can increase hypersensitivity: Fluoride is generally used to help reduce tooth sensitivity, especially when applied topically in higher concentrations or in special fluoride gels. Therefore, it does not typically increase hypersensitivity.
C. is applied deep inside the tooth: Fluoride does not penetrate deeply into the tooth structure. It primarily works on the outer surface of the enamel and can enhance the remineralization of the enamel’s surface layer.
D. may increase the risk of dental caries: This statement is incorrect. Fluoride helps reduce the risk of dental caries, not increase it. It strengthens the enamel, making it less susceptible to decay.
Overall, topical fluoride is beneficial in the fight against tooth decay, helping remineralize the enamel and provide a protective barrier against future decay. Regular application of fluoride is essential in both adults and children, especially for those who are at higher risk of developing cavities.