A practical treatise on artificial crown- and bridge-work . shaped gold or iridio-itlatiiiuni wire aroaiid the iiitervniingteeth, close to but not touching them, and resting lightly on thegums. The application of this device was first illustrated bvDr. J. L. Williams, Figs. 323, 324, and 325. Roots intervening between the abutments of a projected l)ridgeshould not be extracted, but wlienever practicable thev shouldbe treated, tilled, and trimmed level with the gum, as thev can 166 ARTIFICIAL CROWN- AND BRIDOE-WORK. usually be made to afford some support for the bridge, which mayrest upon them.
A practical treatise on artificial crown- and bridge-work . shaped gold or iridio-itlatiiiuni wire aroaiid the iiitervniingteeth, close to but not touching them, and resting lightly on thegums. The application of this device was first illustrated bvDr. J. L. Williams, Figs. 323, 324, and 325. Roots intervening between the abutments of a projected l)ridgeshould not be extracted, but wlienever practicable thev shouldbe treated, tilled, and trimmed level with the gum, as thev can 166 ARTIFICIAL CROWN- AND BRIDOE-WORK. usually be made to afford some support for the bridge, which mayrest upon them. Figs. 326 and 327 represent a case in which theroot of the cuspid on the right side has been so treated and utilized. Fm. Shell Anchorage or Crown.—The construction of a shell anchor-age for a cuspid and its practical application in supporting a SPECIAL PROCESSES AND APPLIANCES IN BRIDOE-WORK. 167 bridge cannot be better deacribed than in the following words ofDr. J. L. Williams: Fig. 328 shows a piece of work made for a case of quitefrequent occurrence. It re[»resent8 the restoration of the inferiorbicuspids and first molar of the right side. A gold crown ismade for the second molar, and the three intervening teeth or dummies are then constructed. For the support of the ante-rior end of the bridge, the method hitherto practiced has Ix-en Fio. 328.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
