Six different ratios of mercury to alloy were evaluated for a spherical alloy dental amalgam by hand and pneumatic compaction into a test cavity with an internal line angle of 30°. Measurements of the area of discrepancy between amalgam and wall of the cavity in 240 specimens showed that varying the amount of mercury in 1% increments between 48 and 52% compositions did not introduce significant changes in adaptation for either of the two compaction technics.
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References
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Mitchem, J.C., and Mahler, D.B.: The Adaptation of Amalgam, JADA76:787-791, 1968.
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Azar, E.S.: Adaptation of a Dental Amalgam to Cavity Details, MSD thesis, Seattle, University of Washington, 1966.
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Azar, E.S.; Welk, D.A.; Stibbs, G.D.; and Hodson, J.T. : Quantitative Evaluation of the Adaptation of Dental Amalgam into Line Angles, J Dent Res47:533-536, 1968.
