When is it actually a good thing to suck? When you are dental vacuum system, the critical lifeblood of the practice. To get technical, dental vacuum systems are based on two properties: vacuum (providing the energy for transporting materials) and airflow (determining the volume of air and its ability to capture aerosols). There are variables—including wet or dry, pump type, size, capacity, noise generation--between different systems, so do your homework to make sure you choose the best one for your practice’s size and style. To get started, here are three feature-rich units to compare.