Principles and practice of operative dentistry . Custer electric Mitchell electric furnac been curtailed to a few minutes, while the danger from changing the colorof the material by the presence of gases has ceased to cause anxiety, andthe noise, dirt, and hard labor incident to working the foot-bellows of thegas furnace have all been done away with. Porcelain.—Until quite recently the porcelain used for making inlayswas of the high-fusing grade, the Close or Downie porcelain body generallybeing employed. These bodies require a platinum matrix in which to fusethem, as the fusing-point i
Principles and practice of operative dentistry . Custer electric Mitchell electric furnac been curtailed to a few minutes, while the danger from changing the colorof the material by the presence of gases has ceased to cause anxiety, andthe noise, dirt, and hard labor incident to working the foot-bellows of thegas furnace have all been done away with. Porcelain.—Until quite recently the porcelain used for making inlayswas of the high-fusing grade, the Close or Downie porcelain body generallybeing employed. These bodies require a platinum matrix in which to fusethem, as the fusing-point is about 2500° F., which is considerably higherthan the fusing-point of pure gold. INLAYS. 353 The Downie bodies are furnished in twenty-four different shades ofcolor, which makes it possible, when skilfully and artistically combined, toreproduce any shade of color to be found in the natural teeth. Theseporcelains are admirably adapted for crown- and bridge-work, but theyhave never been extensively used for inlays, for the reason that a platinummatrix is required i
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901
