The effect of dental amalgam restorations on blood mercury levels.

Author: Abraham JE, Svare CW, Frank CW.

Source: J Dent Res.

Year: 1984

Comment:

In this study, the number and surfaces of amalgam fillings are linked to mercury exposure levels in blood, and chewing was found to increase mercury vapor levels in the mouth.

Abstract / Excerpt:

“ABSTRACT: Mercury levels in blood and in mouth air before and after chewing were measured in 47 persons with and 14 persons without dental amalgam restorations. Questionnaires relating to exogenous sources of mercury exposure were administered to both groups. Differences in the mouth air mercury levels before and after chewing were statistically significant in the group with amalgams, but not in the group without amalgams. Analysis of the data from the questionnaires indicated that little or no exogenous exposure to mercury occurred among the two groups. Blood mercury concentrations were positively correlated with the number and surface area of amalgam restorations and were significantly lower in the group without dental amalgams.”

Citation:

Abraham JE, Svare CW, Frank CW. The effect of dental amalgam restorations on blood mercury levels. J Dent Res. 1984; 63(1):71-3.