A practical treatise on artificial crown- and bridge-work . the destructive action that resulted in the deplorable loss oftooth-substance shown in Fig. 390.^ The next case also presented unusual difficulties. The forwardoverhang of the inferior right second molar was so excessive thatan impression could hardly be taken, until with corundum-wheelsand points the sides of the tooth had been made ]>arallel, orrather slightly tapering to form a truncated cone, with the neckas a base. The molar was alive and sound, but the crown wasgone from the pulpless cuspid, which I suitably shaped by meansof
A practical treatise on artificial crown- and bridge-work . the destructive action that resulted in the deplorable loss oftooth-substance shown in Fig. 390.^ The next case also presented unusual difficulties. The forwardoverhang of the inferior right second molar was so excessive thatan impression could hardly be taken, until with corundum-wheelsand points the sides of the tooth had been made ]>arallel, orrather slightly tapering to form a truncated cone, with the neckas a base. The molar was alive and sound, but the crown wasgone from the pulpless cuspid, which I suitably shaped by meansof my root-trimmers (Fig. 393). ^Dental Cjsmos, vol. xxviii, No. 1, page 17. 198 ARTIFICIAL CROWN. AND BRIDGE. WORK. An impression was then taken, the cast from which is iUus-trated by Fig. 394. A seamless gold collar was, by means of aslightly tapering mandrel, made to exactly fit the tapered naturalmolar, the lower edge of the collar cut to conform to the gin-gival margin; a cap piece of gold plate soldered to the top edgeof the collar, and a hole drilled
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
