An adapter for connecting a vacuum source to an intraoral device has a plug portion and a connection portion extending proximally from the plug portion. The plug portion is configured for releasable mating engagement with a connection section of an intraoral device which communicates with one or more evacuation channels of the intraoral device. The connection portion has a proximal end configured for connection to one or more vacuum lines of a vacuum source. One or more vacuum lumens extend through the plug and connector portions to communicate with the one or more vacuum lines to remove fluid from a patients mouth.
