A mother in New Jersey took her 3-year-old son to a dentist for a routine procedure. The boy was placed in a kind of papoose to restrain him while he was given a local anesthetic and his cavities were filled. But according to the mother, the little boy's body went limp, and his lips turned blue. He had stopped breathing. The child was later pronounced dead at a New Jersey hospital, and the dentist who gave the little boy anesthetic is now under investigation for medical negligence.