{HEAD ~ A computer interactive software program} provides for treatment planning, diagnosis and {TAIL ~ appliance} from the virtual tooth models 
provides for
{ HEAD ~ A computer interactive software program } provides for treatment planning , diagnosis and { TAIL ~ appliance } from the virtual tooth models
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH