International journal of paediatric dentistry
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Int J Paediatr Dent · Mar 2007
Comparative StudyExposure to nitrous oxide in a paediatric dental unit.
The aim of this study was to evaluate the 8-h time-weighted average (8-h TWA) exposure to nitrous oxide of dentists working in a paediatric dental unit, and to relate this to various operator, patient and environmental factors. ⋯ This study found that the recommended 8-h TWA was achieved in only 38% of treatment episodes, despite the use of active scavenging.