A Practical treatise on artificial crown- and bridge-work, and porcelain dental art / by George Evans.
- George Evans
- Date:
- 1900
Licence: Public Domain Mark
Credit: A Practical treatise on artificial crown- and bridge-work, and porcelain dental art / by George Evans. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
125/398 page 101
![pieces, is pressed tliroiigh a steel die-plate, with punches gauged to the holes; at each pinich a small ])ortion of the gold is turned Fid. 182. The form of stamping machine introduced bj- the late Dr. J. J. R. Patrick. over, thus preventing its lapping or creasing (Fig. 183). Re- peated annealing of the metal is very necessary in this process. Fig. 183. Fig. 184. O O @@ \ Methods of Contouring Crowns constructed in Sections.—In constructing a crown in sections, the collar can be first formed on a mandrel, then placed in a mold, and burnished to the shape of the sides. The process of its adjustment to the neck of the root is then con- tinued in the usual manner.](https://iiif.wellcomecollection.org/image/b21223075_0125.jp2/full/800%2C/0/default.jpg)
