{HEAD ~ The system} 19, wherein the scanner further comprises a video mode of operation in which a light source illuminates the dentition and an imaging device generates a video image of {TAIL ~ the dentition} 
{ HEAD ~ The system } 19 , wherein the scanner further comprises a video mode of operation in which a light source illuminates the dentition and an imaging device generates a video image of { TAIL ~ the dentition }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL