{HEAD ~ The system} 19, wherein {TAIL ~ 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 the dentition 
wherein
{ HEAD ~ The system } 19 , wherein { TAIL ~ 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 the dentition
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL 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