A practical treatise on artificial crown- and bridge-work . in the form of a matrix, so as to allow the porcelain to beremoved and replaced. A piece of heavy iridio-platinmn plate(E), No. 16 U. S. standard gauge, is then shaped into the formof a half-ring, with the ends of the plate against the backing of 13 194 ARTIFICIAL CROWN- AND BRIDQE-WORK. the porcelain front, and of sufficient size to rest on the flangededge of the cap when completed. On the outside of this half-ring is fitted and soldered a thin strip of gold, F, of No. 28U. S. standard gauge, which will cover the half-ring and extend
A practical treatise on artificial crown- and bridge-work . in the form of a matrix, so as to allow the porcelain to beremoved and replaced. A piece of heavy iridio-platinmn plate(E), No. 16 U. S. standard gauge, is then shaped into the formof a half-ring, with the ends of the plate against the backing of 13 194 ARTIFICIAL CROWN- AND BRIDQE-WORK. the porcelain front, and of sufficient size to rest on the flangededge of the cap when completed. On the outside of this half-ring is fitted and soldered a thin strip of gold, F, of No. 28U. S. standard gauge, which will cover the half-ring and extendbeyond its cervical margin, slightly overlapping the flange of thecollar (G). This forms a hrace or edge on the anchorage cap asit rests on the root-cap. The half-ring is then fitted to the tooth,attached with wax, and removed with the tooth out of the plastermatrix from the root-cap, invested, and securely soldered on theinside to the hacking of the tooth. The tooth and half-ring arethen adjusted to the root-cap, over the post of which the ringmust slide
Size: 1192px × 2097px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1889
