erg ic ▁contact ▁der mat itis , ▁which ▁may ▁also ▁be ▁due ▁to ▁the ▁presence ▁of ▁formal de hy de ▁within ▁the ▁pl aster ▁band ages . ▁In ▁hot ▁weather , ▁st ap hy loc oc cal ▁in fection ▁of ▁the ▁hair ▁fol lic les ▁and ▁swe at ▁g lands ▁can ▁lead ▁to ▁severe ▁and ▁pain ful ▁der mat itis . ▁ ▁Other ▁limitations ▁of ▁pl aster ▁cast s ▁include ▁their ▁weight , ▁which ▁can ▁be ▁quite ▁considerable , ▁thus ▁restrict ing ▁movement , ▁especially ▁of ▁a ▁child . ▁Rem oval ▁of ▁the ▁cast ▁requires ▁destroy ing ▁the ▁cast ▁itself . ▁The ▁process ▁is ▁often ▁no isy , ▁making ▁use ▁of ▁a ▁special ▁oscill ating ▁saw ▁that ▁can ▁easily ▁cut ▁the ▁hard ▁cast ▁material ▁but ▁has ▁difficulty ▁cutting ▁soft ▁material ▁like ▁cast ▁padding ▁or ▁skin . ▁Although ▁the ▁removal ▁is ▁often ▁pain less , ▁this ▁can ▁be ▁dist ress ing ▁for ▁the ▁patient , ▁especially ▁children . ▁ ▁A ▁cast ▁saw ▁can ▁cut , ▁ab rade , ▁or ▁burn ▁skin , ▁but ▁those ▁results ▁are ▁un common . ▁Additionally , ▁pl aster ▁of ▁Paris ▁cast s ▁break ▁down ▁if ▁patients ▁get ▁them ▁wet . ▁ ▁Due ▁to ▁the ▁limitations ▁of ▁pl aster ▁of ▁Paris , ▁sur ge ons ▁have ▁also ▁experiment ed ▁with ▁other ▁types ▁of ▁materials ▁for ▁use ▁as ▁spl ints . ▁An ▁early ▁pl astic ▁like ▁material ▁was ▁gut ta - per cha ▁obtained ▁from ▁the ▁late x ▁of ▁trees ▁found ▁in ▁Mal aya . ▁It ▁res emble d ▁rub ber