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