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. (Hart John), 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.

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    2760 smoothness of the surfaces; and should include removing, or diminish- ing any undesirable or unnecessary display of metal upon any surface. Owing to the small size of the piece, this may usually be best accom- plished with small carborundum stones, of coarse and medium grit, used in the engine. These should be followed with emery or sandpaper disks of medium grit, and subsequently with very fine, or cuttlefish, disks, until every scratch is removed, and.the surfaces are perfectly smooth. A more finished and artistic appearance may be given to the lingual surfaces of anterior crowns with gold backings by making an effort to ‘reproduce the natural shape and form of this surface in the gold (Fig. _ 215), which may be easily and quickly done with a knife-edge carbo- rundum stone, and plug-finishing burs. rest Polishing. This should then be followed by highly polishing the metal with felt and brush wheels on the lathe. The primary polishing should be ob- tained with a thin-edge felt wheel (Fig. 216) and moistened pumice stone of medium grit; and the wheel should be previously soaked in water, so that it will absorb and carry the pumice stone with it’ during the proce- dure. . - When the desired smoothness of surface has been thus obtained, the final polishing should be given first with a stiff brush-wheel (Fig. 217a), used with the pumice stone, and then with moistened whiting, or pre- cipitated. French chalk; and this should be followed with a soft brush-