In-depth survey report: control of anesthetic gases in dental operatories at University of California at San Francisco, Oral Surgical Dental Clinic, San Francisco, California, report no. CT-166-12b.
McGlothlin-JD; Jensen-PA; Cooper-TC; Fischbach-TJ; Fairfield-CL
NIOSH 1990 Sep; :1-119
A study was made to document and evaluate effective techniques for the control of potential health hazards at the Oral Surgical Dental Clinic (SIC-8012), San Francisco, California. Personal exposure for waste anesthetic gas concentrations from the ten operations studied ranged from less than 1 to 277 parts per million (ppm) for the oral surgeons and from less than 1 to 77ppm for the surgical assistants. The oral surgeons had a greater range of exposure compared to the surgical assistants. These differences may be attributed to the closer working proximity of the oral surgeon to the patient's breathing zone. Work practices and changes in waste gas concentration as a function of work practices were most affected by the regulation of anesthetic gas delivery, including the amount of anesthetic delivered and the length of time the it was delivered, the breathing zone of the oral surgeon relative to that of the patient, and whether the patient was instructed to nose breathe and reduce talking when possible. General ventilation measurement showed that the surgical suites were below specifications for air flow, as much as 60% in some cases.
NIOSH-Author; NIOSH-Survey; Field-Study; CT-166-12B; Region-9; Control-technology; Ventilation-systems; Health-care-personnel; Dentists; Anesthesia; Anesthetics; Toxic-gases
Control Technology; Field Studies
NTIS Accession No.
National Institute for Occupational Safety and Health