Abstract: The protective sleeve for a saliva ejector is formed of a soft, porous plastic material for installation upon the end of a conventional ejector tube to protect the soft tissues within the mouth of a dental patient during dental work. The device has a generally cylindrical external configuration with a frustoconical installation passage formed concentrically therein. The installation passage has a relatively wide mouth and narrower neck portion within the intermediate portion of the sleeve. The installation passage widens within the distal end portion of the device, to provide clearance for the larger diameter head of the ejector tube. This results in a necked-down portion in the intermediate portion of the device. The distal end of the device is closed, with a larger diameter bulbed external portion providing further cushioning.