What is the primary function of a dental unit?

The primary function of a dental unit is to provide a delivery system for handpieces and other instruments. This system is integral to clinical procedures, allowing dental professionals to efficiently access and use various tools necessary for different treatments. The dental unit typically includes features such as a water supply, air pressure controls, and power sources for handpieces, enabling the dentist to perform a wide range of tasks, from routine cleanings to more complex surgical procedures.

While the other options mention important aspects of dental practice, they do not represent the primary function of the dental unit. For instance, providing lighting is crucial for visibility during procedures but is not the main role of the dental unit itself. Similarly, storing dental materials is essential for organization and efficiency but occurs separately from the core functions of the dental unit. Patient monitoring is vital for keeping track of a patient’s vital signs during procedures, yet this aspect relates more to other equipment within the dental office rather than the dental unit's direct role in delivering instruments and tools needed for dental work.