A practical treatise on artificial crown- and bridge-work . second or outercap is then constructed for the root-cap, the band being madevery narrow at the approximal and palatal sides, and open at BEMOVA BLE PL. 1 TE BRIDGES. 209 the labial side, as the porcelain tooth to be attached will serve inits stead (B). The pin is then soldered fast in the outer cap, anda clasp of clasp gold (C), No. 23 to No. 24 U. S. standard gauge,is formed to extend well around the posterior approxiraal portionof the cuspid. The outer cap having been placed in position onthe inner one, the plate extending from the
A practical treatise on artificial crown- and bridge-work . second or outercap is then constructed for the root-cap, the band being madevery narrow at the approximal and palatal sides, and open at BEMOVA BLE PL. 1 TE BRIDGES. 209 the labial side, as the porcelain tooth to be attached will serve inits stead (B). The pin is then soldered fast in the outer cap, anda clasp of clasp gold (C), No. 23 to No. 24 U. S. standard gauge,is formed to extend well around the posterior approxiraal portionof the cuspid. The outer cap having been placed in position onthe inner one, the plate extending from the central to thecuspid is cemented to it and to the clasp with wax, removed,invested, and the parts soldered together. Aided by the plasterarticulation, teeth are ground and fitted by the model, backed,attached to the plate with wax, and inserted in the foil is then burnished to the form of the notchon the cuspid, the clasp fitted over it and attached with wax,removed with the plate, and soldered to it simultaneously with the teeth. Fig. When the piece is finished and fitted in the mouth, the innercap—the end of the tube having been closed with gutta-percha—is first cemented on the central root. A very small quantityof oxyphosphate is used, and while it is yet soft the plate isadjusted in position, and allowed to remain there until thecement has set. The split pivot is sprung open a little andforced to place. With the aid of the clasp around the cuspid itwill be found to perfectly secure the plate. Fig. 414 shows thebridge in position. If the plate forming the bridge is tightly ad-justed against the soft tissues, and removed in that position inthe impression taken with the caps, it will always be found tofit in a similar manner when the bridge is finished. Should theclasp cause decay or abrasion of the cuspid, the tooth can beexcavated to a slight depth under the clasp, and filled with is best done by making a few retaining-pits, filling themwit
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
