Influence of Certain Condensation Procedures Upon the Mercury Content of Amalgam Restorations

Mechanical Failure of Amalgam Restorations with Zinc Phosphate and Zinc Oxide/Eugenol Cement Bases

“…The amalgam was not handled with the fingers, in order to avoid contamination by moisture.2 Condensation by hand appears to be an appropriate method, according to Wilson, Phillips, and Norman3 and was used exclusively. * Tech-Cast, J. F. Jelenko & Co., 136 West Fifty-second St., New York 19, N.Y.…”

Early and Transversal Measurement of Amalgam Expansion

“…The expansion of the top layer might be still greater if the thickness of the excess removed were less, as is possible in clinical practice. It is considered quite possible for an amalgam filling to expand laterally at the cavity opening even when it contracts vertically, although the authors do not claim this is the whole explanation for the discordance between the clinical result and the previous laboratory data.2 12,[20][21][22] have reported that the more the residual mercury, the lower was the compressive strength. In this study, however, the hardness was not lowest in the top portions with the highest mercury content.…”