Central Vacuum Systems with Disinfection” have been designed in order to carry out disinfection and neutralization in a controlled manner before the liquid medical wastes coming from the dental units are send to the sewer system. Disinfected central vacuum systems provide dentists with the desired health and suitable working environment with the high vacuum power they provide. These systems store the liquid medical wastes coming from the dental units within its own structure and then neutralize and disinfect it before sending it to the sewer system. This process is monitored online, the necessary disinfectant substances are automatically dosed into the waste with the dosing unit and given to the sewer system when it is suitable for the required discharge condition. Thus, the unwanted bacteria and organisms that threaten our health contained in liquid medical wastes are also eliminated. In addition, heavy metal particles such as mercury and silver, which are very harmful to the environment and human health, are prevented from being released into nature by filtration with amalgam separators. The system performs all these works fully automatically thanks to the PLC automatic control unit.