Similar questions:
Why would a dental assistant ask a patient to not close his or her lips around the saliva ejector?
To avoid backflow contaminationAssist 3
Why would a densite form of gypsum be used to create a die for use in the fabrication of a wax pattern with the production of crowns and bridges? Except
Because the crystals in this gypsum form are porous/spongyAssist 6
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