Dental Admissions Test (DAT) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Describe the relationship between bacteria and tooth decay.

Bacteria produce acid that erodes enamel

Bacteria play a crucial role in the development of tooth decay primarily through the production of acid. When carbohydrates from food are consumed, specific bacteria in the mouth metabolize these sugars and produce acids as byproducts. These acids can lower the pH in the oral environment, leading to demineralization of the tooth enamel, which is the hard outer surface of the teeth. Over time, if this process continues without proper oral hygiene, it can result in cavities or caries.

Understanding this relationship emphasizes the importance of maintaining good oral hygiene, as reducing the presence of harmful bacteria and their acid production can help protect against tooth decay. Other options do not reflect this understanding; for example, while bacteria can play a role in gum disease, their link to tooth decay is particularly significant due to their acid-producing activity.

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Bacteria strengthen tooth enamel

Bacteria cause gum disease only

Bacteria have no effect on teeth

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