Advantageously, {HEAD ~ the shaper} is made of {TAIL ~ a material} which withstands the resin polymerisation temperature, for example, a rigid metal alloy such as a steel or an aluminium alloy 
is made of
Advantageously , { HEAD ~ the shaper } is made of { TAIL ~ a material } which withstands the resin polymerisation temperature , for example , a rigid metal alloy such as a steel or an aluminium alloy
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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