MILAN—A dentist in Italy faces possible criminal charges after trying to receive a coronavirus vaccine in a fake arm made of silicone. A nurse in the northern city of Biella, Filippa Bua, said she could tell right away that something was off when a man presented the phony limb for a shot on Thursday. “When I uncovered the arm, I felt skin that was cold and gummy, and the color was too light,’’ Bua told Italian newspaper Corriere della Sera. She said she initially thought the 57-year-old man was an amputee and had mistakenly offered the wrong arm. She lifted his shirt and saw a silicone arm. “I understood immediately that the man was trying to avoid the vaccination by using a silicone prosthetic, into which he hoped that I would inject the drug, unaware, Bua said. The nurse said the man acknowledged he did not want a vaccine but …