Any medical emergency or death is unfortunate.  These proposed regulations are not only redundant but will increase the cost of dental care unecessarily.   Dental offices currently have emergency drills and medical kits in place to reduce the impact of these occuring.  In addition, most dental offices use only local injected anesthesia and possibly nitrous oxide, both of which are extremely safe when used correctely according to their training/education in their four years of dental school.  Very few dental offices use sedation or general anesthesia and there are recent new regulations in place already requiring additional training for those dentists who use these techniques.