Dental Admissions Test (DAT) Practice Test

Sugar is the dietary component most associated with an increased risk of cavities. When sugar is consumed, it interacts with the bacteria in the mouth, leading to the production of acid as a byproduct. This acid can erode tooth enamel, creating an environment conducive to the development of cavities. The more frequently sugar is consumed, especially in the form of sticky or sweetened foods and beverages, the greater the exposure of teeth to these harmful acids.

In contrast, fiber, calcium, and protein play positive roles in oral health. Fiber, for instance, can help stimulate saliva production, which neutralizes acids and provides essential minerals for dental health. Calcium contributes to remineralizing tooth enamel and maintaining overall teeth and bone strength, while protein is vital for tissue repair and the formation of dental structures. Thus, while these components support oral health, sugar has a direct link to cavity formation due to its fermentation by oral bacteria.