A practical treatise on artificial crown- and bridge-work . rm of the crown. Dr. Townsends fusi-ble metal die, used in the following manner, facilitates the appli-cation of a collar to a Logan crown (Fig. 121). Enlarge theFig. 121. root-canal to receive the Logan pin. Grind af\ Logan crown to fit, and articulate it. Construct a band of No. 30 gold (or of No. 32 crown-metal,which is better) wide enough to project beyond• the end of the root say -^-^ of an inch. Cut awooden peg about an inch longand taper one end of it to thegeneral size and shape of thepin in the Logan crown. Placethe band on t
A practical treatise on artificial crown- and bridge-work . rm of the crown. Dr. Townsends fusi-ble metal die, used in the following manner, facilitates the appli-cation of a collar to a Logan crown (Fig. 121). Enlarge theFig. 121. root-canal to receive the Logan pin. Grind af\ Logan crown to fit, and articulate it. Construct a band of No. 30 gold (or of No. 32 crown-metal,which is better) wide enough to project beyond• the end of the root say -^-^ of an inch. Cut awooden peg about an inch longand taper one end of it to thegeneral size and shape of thepin in the Logan crown. Placethe band on the root, insert thepeg in the canal, and fill up theband with Melottes moldine orwith stifl: putty, pressing it closely about the ]) all together and, holding the die over theflame of an alcohol lamp to melt the fusible metal,place them—the band, peg, and moldine, in thesame relative positions they occupied in the root—on the die, with the pin in the socket, and press down untilthe moldine rests on the surface of the molten fusible
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
