The virtual model of the desired occlusion and {TAIL ~ the virtual model} of the original dentition provide a base of information for custom manufacture of {HEAD ~ an orthodontic appliance} 
The virtual model of the desired occlusion and { TAIL ~ the virtual model } of the original dentition provide a base of information for custom manufacture of { HEAD ~ an orthodontic appliance }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD