EPA Dental Nursing Interview Practice Test

Saliva plays a crucial role in oral health and has several important functions in the mouth, particularly in food digestion and the remineralization of enamel. Firstly, saliva contains enzymes like amylase, which begin the digestion of carbohydrates as soon as food enters the mouth. This enzymatic action is essential for breaking down food particles into simpler forms that can be further digested in the gastrointestinal tract.

Additionally, saliva is rich in minerals such as calcium and phosphate, which are vital for the remineralization of tooth enamel. Enamel can become demineralized due to acid produced by bacteria in dental plaque, leading to cavities and other dental issues. The presence of these minerals in saliva helps to restore the enamel, making teeth stronger and more resistant to decay.

While saliva does also act as a lubricant to facilitate swallowing and speech, this is just one aspect of its multifaceted role in maintaining oral health. Therefore, the most significant and comprehensive function of saliva includes both assisting with digestion and supporting the remineralization of teeth, highlighting its importance beyond mere lubrication.