Document ID (ISN) | 67086 |
CIS number |
96-1411 |
ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
Year |
1996 |
Convention or series no. |
|
Author(s) |
Crouch K.G., Johnston O.E. |
Title |
Nitrous oxide control in the dental operatory: Auxiliary exhaust and mask leakage, design, and scavenging flow rate as factors |
Bibliographic information |
Mar. 1996, Vol.57, No.3, p.272-278. Illus. 19 ref. |
Abstract |
Local exhaust systems installed in a dental surgery failed to control patient mouth emissions of nitrous oxide. Laboratory testing on a head form, in conjunction with the surgery observations, established that mask leakage due to poor fit was the primary cause of these emissions. An improved mask fit and the addition of a slotted skirt around the outer mask shell individually resulted in greatly reduced leakage rates in the laboratory tests. Also, exhaust systems placed on the chin, on the chest or in the mouth proved effective in capturing mouth emissions simulated by a breathing machine and head form. |
Descriptors (primary) |
nitrous oxide; dental services; respirators; exhaust ventilation |
Descriptors (secondary) |
local exhaust; gas removing respirators |
Document type |
D - Periodical articles |
Country / State or Province | USA |
Subject(s) |
Commerce, services, offices
|
Broad subject area(s) |
Chemical safety
|
Browse category(ies) |
Respiratory protection Health care services Inorganic substances Ventilation
|