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