Admission Test for Dental Hygiene (ATDH) 2025 – 400 Free Practice Questions to Pass the Exam

Fluoride plays a crucial role in dental health primarily by its ability to prevent tooth decay. It strengthens tooth enamel, making it more resistant to the acids produced by bacteria in plaque. When fluoride is present, it can be incorporated into the mineral structure of the teeth, enhancing their durability and ability to withstand decay. Additionally, fluoride helps to remineralize areas of the enamel that have begun to demineralize, reversing early stages of tooth decay.

It is important to understand the context of this role; while options that mention staining, whitening, or promoting gum growth may reference other aspects of dental care and health, they do not accurately reflect the main function of fluoride. Staining teeth and whitening them are related to cosmetic considerations, which are not the primary concern of fluoride use. Similarly, fluoride does not promote gum growth; instead, its focus is primarily on the enamel and preventing cavities.