A practical treatise on artificial crown- and bridge-work . collar, beside which, B, Fig. 394, its form is seen, and towhich it was subsequently soldered, after suitable investment tokeep the parts in proper place. The root-canal had been pre- DETACHABLE AND REMOVABLE BRIDGE-WORK. 199 viouslv prepared to receive the tube, which, with its roofed cap,was with stick and mallet driven hard down over the root. Apiece of gold wire exactly fitting the tube had a roof-shapedpiece of properly-perforated gold plate slipped over it into posi-tion on the root; became fixed in such relation by a drop ofmel
A practical treatise on artificial crown- and bridge-work . collar, beside which, B, Fig. 394, its form is seen, and towhich it was subsequently soldered, after suitable investment tokeep the parts in proper place. The root-canal had been pre- DETACHABLE AND REMOVABLE BRIDGE-WORK. 199 viouslv prepared to receive the tube, which, with its roofed cap,was with stick and mallet driven hard down over the root. Apiece of gold wire exactly fitting the tube had a roof-shapedpiece of properly-perforated gold plate slipped over it into posi-tion on the root; became fixed in such relation by a drop ofmelted hard wax; was removed, invested, soldered, and finishedin such shape that, excepting the hollowness, it looked like thetube and cap B. The relations of the occluding teeth had, of course, beendetermined by an articulating model, and by means of it a seriesof seamless gold collars and cusp-crowns were adjusted on a thinplatinum plate fitted on the cast between the cuspid and secondmolar, and the collars soldered to the plate after investment. Fig. The truss thus formed received an appropriate finish by therounding and smoothing of its basal borders. A plain platecuspid was backed with gold plate and fitted on the roof-plate, towhich, after determining its proper occlusion, it was secured byhard wax; removed, invested, and soldered. It was then putinto the tube on the root; the telescoping cap put over the molar;the truss put in position in the mouth, and the whole coveredwith plaster and marble-dust, contained in a suitable sectionalimpression-tray, which enabled me to hold the mass steadily inplace until the mixture was suflaciently hard to bring away capand truss and roof-plate all in proper position. A second mixtureof plaster and marble-dust, and a suitable trimming of the firstmixture after all was hard, sufiiced for the soldering process that 200 ARTIFICIAL CROWN- AND RRIDGE-WORK. Fio. 306. resulted in the denture which, when finished, appeared as showndetached a
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
