A Practical Treatise On Artificial Crown- And Bridge-Work
The book A Practical Treatise On Artificial Crown- And Bridge-Work was written by author George Evans Here you can read free online of A Practical Treatise On Artificial Crown- And Bridge-Work book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Practical Treatise On Artificial Crown- And Bridge-Work a good or bad book?
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272) is usually sufficient, the remaining exposed surface of the root-end being covered by adapting thin platinum plate over it and onto the surface of the cap before adjusting the porcelain front (Figs. 273 and 274). Figs. 275 and 276 show the completed bicuspid crown before and after the final adjust- ment. Molar roots are capped similarly, using two step-plugs. The plugs are useful in building up badly decayed roots to support and retain all-gold crowns. 10 130 ARTIFICIAL CROWN- AND BRIDGE-W...ORK. Fig. 277. THE PERRY CROWN. Dr. Safford G. Perry, of New York, employs a porcelain crown in combination with a capped root. A bicuspid will be taken as a typical case to illustrate Dr. Perry's method. The end of the root, by trimming the edge, is given the tapering form shown at A, Fig. 277. The collar (B) is made very narrow. A cap is fitted on the collar, and a post or posts fitted in the roots and through the cap. The entire cap is made of platinum soldered with pure gold. Enough of the post is allowed to extend beyond the cap to attach and firmly retain the porcelain crown (C).
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