44 SALIVA EJECTORS, AND SLEEVE APPLICATORS FOR SALIVA EJECTORS USED BY DENTISTS AND DENTAL TECHNICIANS IN EVACUATING SALIVA FROM THE MOUTHS OF PATIENTS UNDERGOING DENTAL WORK, AND BITE-WING TABS FOR HOLDING X-RAY FILM IN PRESELECTED POSITIONS IN A PATIENT'S MOUTH DURING X-RAYING OF TEETH AND MOUTH AREA