A practical treatise on artificial crown- and bridge-work . Ih )\J the grinding-surface on the mandrel and then stamping downwardon the straight sides of the crown with a cap fitted to the shankpart of the mandrel. But such a process, like many others, istoo complicated to be of any use to the dental practitioner. Thesectional mold method here presented is simple, practical, andgeneral in its application. To describe and illustrate the process, we will take one ofthe most difiicult crowns to construct,—a superior molar (). A natural tooth, or one made of plaster, is used as amodel. From
A practical treatise on artificial crown- and bridge-work . Ih )\J the grinding-surface on the mandrel and then stamping downwardon the straight sides of the crown with a cap fitted to the shankpart of the mandrel. But such a process, like many others, istoo complicated to be of any use to the dental practitioner. Thesectional mold method here presented is simple, practical, andgeneral in its application. To describe and illustrate the process, we will take one ofthe most difiicult crowns to construct,—a superior molar (). A natural tooth, or one made of plaster, is used as amodel. From this a sectional mold is made, as illustrated inFigs. 211 and 212, in Babbitts metal, zinc, or fusible alloy. 110 GOLD SEAMLESS CONTOUR CROWNS. Ill Into the mold a cap of gold (Fig. 213) 23 to 24 carats fine, 30 to32 gauge, is adjusted, fitting tightly the orifice of the closedmold. The mold is placed in a vise, the cap expanded to thegeneral form of the mold by hammering into it a mass ofcotton, and then swaged more in detail to the form, and witha wo
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
