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Abstract


INTERNATIONAL DENTAL JOURNAL OF STUDENTS RESEARCH - VOLUME 1 ISSUE 3, Oct-Jan 2013

Pages: 51-57

EXPOSURE OF DENTAL STAFF TO NITROUS OXIDE

Author: Omar Mustafa

Category: Original Research

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Abstract:

Background: Chronic exposure to nitrous oxide has been reported as a potential health hazard. Leakage from the mask delivery system and inefficient scavenging can lead to significant pollution.

Aims: to monitor the nitrous oxide traces in the working environment of the dental staff at the Paediatric Department at of Liverpool Dental Hospital and to compare with the national standards.

Methods: Nitrous oxide was measured in twenty seven dental procedures according to two methods. First method, measurements were recorded every two minutes during the inhalational sessions. Second method measurements were recorded from different distances from the operation site.

Results: 21 sessions used for the first method. No statistical difference was found between the means of the nitrous oxide traces through the extraction and conservative sessions. Age group from 6 to 8 years has the highest measured traces. High traces recorded during stressful events.

 6 sessions were selected for the second method. The distance obeys the inverse square law.

Conclusions:  uncooperativeness would lead to excessive pollution. Patient conditioning to breathing through nose would be very helpful. Equipment to be checked for leaks and that the mask is of the appropriate size and tight fitting. Ensure that scavenging and surgery ventilation is adequate.

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