{HEAD ~ The artificial bone model} can be used for educational training or for studying {TAIL ~ a plan} for curing before a surgical operation 
used for studying
{ HEAD ~ The artificial bone model } can be used for educational training or for studying { TAIL ~ a plan } for curing before a surgical operation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH