Dental Assistant Practice Exam

What role does dental plaque play in tooth decay?

1. It acts as a protective barrier

2. It is irrelevant to tooth health

3. It harbors bacteria that produce acids

4. It enhances fluoride absorption

The correct answer is: It harbors bacteria that produce acids

Dental plaque plays a significant role in tooth decay by harboring bacteria that produce acids. When plaque forms on the teeth, it becomes a residence for various types of bacteria. These bacteria metabolize sugars from the food we eat, resulting in the production of acids as a by-product. These acids can demineralize tooth enamel, leading to the development of cavities and, ultimately, tooth decay if the plaque is not removed through proper oral hygiene practices like brushing and flossing. It's essential to understand that while some might think of plaque as protective, it actually contributes to an acidic environment that is harmful to teeth. The presence of plaque is closely tied to potential dental issues, making it a critical aspect of maintaining oral health. Reducing plaque through regular dental care helps lower the risk of decay and preserve tooth integrity. Hence, its role in harboring bacteria that produce acids is pivotal in the context of oral health and disease.