Computer-readable media include computer-readable instructions. The recoverable IO request processor translates virtual memory addresses to physical memory addresses utilizing translation tables local to an IO device. , a pump or valve, and a drug delivery control means. A suction nozzle is secured to the housing and in fluid communication with the recovery tank. One or more of the plurality of interrelated administrative objects provide access control of one or more of a plurality of configuration items of a configuration management database by at least one of the plurality of interrelated administrative objects. Since the tongue depressor can be operated by one hand, mouth cleaning can be carried out by the other hand.