Isaac Gagnon stepped off the school bus sobbing last October and opened his mouth to show his mother where it hurt.
She saw steel crowns on two of the 4-year-old’s back teeth. A dentist’s statement in his backpack showed he had received two pulpotomies, or baby root canals, along with the crowns and 10 X-rays -- all while he was at school. Isaac, who suffers from seizures from a brain injury in infancy, didn’t need the work, according to his mother, Stacey Gagnon.