Principles and practice of crowning teeth : a practical, systematic and modern treatise upon the requirements and technique of artificial crown work, including some incidental reference to bridgework. With 459 illustrations / By Hart J. Goslee.

  • Goslee, Hart J., 1871-1930.
Date:
1903
Catalogue details

Licence: Public Domain Mark

Credit: Principles and practice of crowning teeth : a practical, systematic and modern treatise upon the requirements and technique of artificial crown work, including some incidental reference to bridgework. With 459 illustrations / By Hart J. Goslee. 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.

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    large-headed screw-pivot, perforated through the center to allow accu- mulated gases to escape. To the projecting or free end the crown was attached. Because of the tendency of these crowns to Cl)c loosen in their attachment to the pivot, and the ob- fOStcr €rown. jections to wooden pivots, the Foster crown was pat- tented in 1855, and while constructed upon almost the same lines as one designed some five years preceding it, by Dr. Henry Lawrence, it enjoyed quite an extensive use for a number of years under the former name. It possessed almost a flat base, with a perfora- tion in the body of the porcelain so shaped as to form a seat for the ac- commodation of the enlarged head of a screw-pivot, by which means it was anchored securely to the root. Fig. 4. Fic^ 5, F!j. 6. While in the former styles the dowel was first Cl)i JIlacR Crown. attached to the crown and then subsequently to the root, the design of Dr. C. H. Mack, patented in 1872, is recorded as the first instance where the dowel was attached firmly in the root before the crown was fixed in place upon it. The crown was constructed with a countersunk cavity in the body of the porcelain which, being filled with plastics, anchored it securely when mounted. Fig. 5. The difficulty experienced in adapting any of CbC Shell the former styles to the posterior teeth in a practical or or permanent manner, and the desirability of restor- Celescopt Crown. ing and preserving their normal functions, ulti- mately led to the invention of the gold shell or tele- scope crown, patented by Dr. J. B. Beers in 1873. though probably first suggested by Dr. W. N. Morrison some few years previously. This crown proved a great step in the line of progress and develop- ment, because the construction did not require the sacrificing of tooth