9 Investigates asked one of the doctors, specifically, about this regiment. He told us Demerol is no longer commonly used in these procedures because it suppresses the patient’s respiratory rate much faster than other drugs. In the teen’s case, the dentists’ notes obtained by 9 Investigates showed they tried to reverse the sedation by administering three different drugs, then a defibrillator was used and finally emergency paramedics were called.