Influence of Operatory Size and Nitrous Oxide Concentration Upon Scavenger Effectiveness
| Autor: | R.J. Henry, Robert E. Primosch |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Male
0301 basic medicine Operating Rooms Breathing zone Nitrous Oxide Environment controlled Concentration effect Air Pollutants Occupational Scavenger Gas Scavengers Toxicology 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Dental Staff Humans Child General Dentistry Waste Products Analysis of Variance Data Collection Dental Clinics Nitrous oxide concentration 030206 dentistry Nitrous oxide Environment Controlled United States Ventilation Dental patients Dental personnel 030104 developmental biology chemistry Spectrophotometry Child Preschool Female National Institute for Occupational Safety and Health U.S |
| Zdroj: | Journal of Dental Research. 70:1286-1289 |
| ISSN: | 1544-0591 0022-0345 |
| DOI: | 10.1177/00220345910700091001 |
| Popis: | Concern regarding environmental health hazards for dental personnel chronically exposed to waste nitrous oxide (N2O) prompted this investigation. The influence on ambient N 2O levels of scavenging, operatory size, and N2O concentration delivered to the patient was evaluated during treatment of 36 pediatric dental patients. The results showed that scavenging significantly reduced ambient N2O levels measured at 50-56 cm from the patient's nose. Scavenged ambient N2O levels were also observed to decrease when N2O concentrations administered to the patient were reduced from 50 to 30%. This concentration effect was not observed in the non-scavenged groups. ANOVA showed that operatory size exerted a non-significant influence on ambient N2O. The data collected during routine treatment of pediatric dental patients demonstrated that the scavenging system tested significantly reduced waste N20 in the operator's breathing zone, nearly approximating the 25-ppm recommendation established by the National Institute for Occupational Safety and Health (NIOSH). |
| Databáze: | OpenAIRE |
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