Mercury levels in dental surgeries and dental personnel.

Author: Nixon GS, Whittle CA, Woodfin A.

Source: British Dental Journal.

Year: 1981

Comment:

This study identifies areas of occupational risks of mercury exposure in the dental office.

Abstract / Excerpt:

“It was noted that the mercury vapour levels in dental surgeries tended to show a fluctuation throughout the working day. The ambient levels above the threshold limit value of 0·05 mg m-3 only occurred in a few surgeries. What was more important was that high concentrations of mercury vapour were found in certain areas and occurred as the result of certain procedures, sometimes for very short periods. These levels are particularly hazardous if they occur in ‘breathing zones’ which then place the operator and assistant at risk. This does not mean that the ambient levels should be disregarded. Good mercury hygiene is most important and is under the control of the dentist. This begins with the design of the surgery; the materials used for floor and wall coverings; the use of continuous surfaces together with good ventilation and heating. Mercury should not be dispensed within the surgery and if necessary a special preparation area should be used where spillage trays are installed. Hot air sterilisers are another source of high concentration of mercury vapour and should be installed outside the surgery.”

Citation:

Nixon GS, Whittle CA, Woodfin A. Mercury levels in dental surgeries and dental personnel. British Dental Journal. 1981; 151(5): 149-154.