9-year-old girl in California dies after dental surgery under anesthesia

A 9-year-old girl in California died after a dental surgery during which she was under anesthesia, according to the County of San Diego Medical Examiner's Office.

Silvanna Moreno's procedure took place at a dentist office in Vista on March 18, the medical examiner's office said in a press release, providing an address for Dreamtime Dentistry. Following the surgery, she was moved to a recovery room and later discharged. 

Dr. Ryan Watkins, a dentist anesthesiologist with Dreamtime Dentistry, said in a statement given to CBS 8 San Diego that standard post-anesthesia protocols were followed and Moreno "was discharged in stable condition — awake, with stable vital signs and protective reflexes intact — into her mother's care."