Retention of threaded pins in amalgam.
The force required to remove three self-threading retention pins from amalgam and the pin length for optimum retention was determined. Link series TMS Minuta, TMS Minikin, and TMS Minim pins were tested; Minim pins were tested at various lengths. The amalgam materials used were representative of a high-copper admixture type and a ternary spherical-type alloy. Results demonstrate that the Minim pin of 2 to 2.5 mm length is the optimum pin for retention in high-copper type amalgam. Minuta and Minikin pins are removed with only a small amount of force and should be used only when clinical prudence requires a small pin; and when used, the strongest possible amalgam should be selected.
Department of Reconstructie Dentistry, University of Louisville, School of Dentistry, Ky.
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Podshadley
D003723:Dental Amalgam; D003772:Dental Pins; D003793:Dental Restoration, Permanent / Q000379:methods; D003799:Dental Stress Analysis / Q000295:instrumentation; D003781:Denture Retention; D006801:Humans; D013718:Tensile Strength
D003723:Dental Amalgam