Which two roles does saliva play in dental health?

The choice of saliva playing roles in cleaning the mouth and providing fluoride is accurate because saliva serves as a natural cleanser for the oral cavity. It helps wash away food particles and reduces the buildup of plaque, contributing to overall dental hygiene. In terms of fluoride, saliva contains trace amounts that can help in the remineralization process of teeth, further protecting against tooth decay.

The role of saliva in washing away debris is crucial as it maintains the pH balance in the mouth, reducing the risk of acid erosion and bacterial growth that can contribute to cavity formation. Additionally, fluoride is known for its protective qualities, reinforcing enamel and making it more resistant to demineralization.

While other options highlight important functions of saliva—such as preventing bad breath or enhancing taste—cleaning the mouth and providing fluoride are two fundamental roles that align directly with maintaining oral health and preventing dental diseases.