Investigation of two mercury vapor collection techniques

摘要

Objectives: The purpose of this investigation was to develop and test two in vitro mercury vapor collection techniques: a closed bottle technique (CB) and an intraoral flow (IOF) technique. Methods: Amalgam samples were prepared in acrylic first molars (#30) with stadardized Class I preparations. In the CB technique. Samples were placed in either a 25, 100 or 500 ml bottle (n = 5). Vapor was analyzed with the Jerome M-411 using a syringe method over a 7 day period. In the IOF technique an impression of the lower right quadrant of a Typodont was taken with PVS impression materials leaving a 5 mm space over #30.