A Practical Treatise on Artificial Crown- And Bridge-Work

A Practical Treatise on Artificial Crown- And Bridge-Work

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 edition. Excerpt: ...or 22-carat solder is melted into it. The plug of gold thus formed is properly trimmed and polished, and cemented in the cavity of the tooth. When completed, it has the appearance of a gold filling. If necessary, the cavity can be previously partly filled with amalgam or shaped with it, to give a better form to permit the removal of the shell of platinum foil. Plugs so made can occasionally be utilized as an anchorage for bridge-work. Dr. W. B. Ames, of Chicago, makes solid gold tips for abraded pulpless teeth in the following manner for cases in which he prefers not to insert fillings: An opening is made through the occluding surface of the crown into the rootcanal. A flat post, wide enough to fit closely in the pulp-chamber across its greatest diameter, thus tending to prevent any rotary motion of the gold tip, is then formed. A very thin piece of pure gold plate, say N o. 35 American gauge, is adapted and burnished, with handburnishers and Herbst's revolving agate points, into all the irregularities of the abraded surface, and into the orifice of the pulp-chamber. The gold is then trimmed flush and even to the edges, and burnished just over them. An opening is next made in the gold cap, and through it the post is inserted in position. A strip of thin gold plate or platinum foil is next adapted around the tooth, well over and above the edge of the gold cap, and trimmed to the length desired for the tip. With the gold cap and post placed accurately in position, the cavity formed by the strip of plate or foil encircling the tooth is filled with wax cement, and cap, post, and plate or foil removed and invested to the lower edge of the latter (see Fig. 271). The investment is then heated, and 20-carat gold plate or 20-or 22-carat...show more

Product details

  • Paperback | 66 pages
  • 189 x 246 x 4mm | 136g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236943325
  • 9781236943323