A practical treatise on artificial crown- and bridge-work . The Logan Crown.—The Logan crown, now so extensivelyused, is the invention of Dr. M. L. Logan. The method ofmounting is explained in all its details in the following articleby Dr. W. S. How : Fig. 85 shows a superior right central root, an end appear-ance of the same, and a Logan crown, front view. Fig. 86 ex- THE LOO AX CROWN. 65 hibits, at a ri2:ht angle to the plane of the first figure, the sameroot, its end, and the Logan crown, sido view. In both figuresthe root-canal is supposed to have been first drilled to a gaugeddepth with a
A practical treatise on artificial crown- and bridge-work . The Logan Crown.—The Logan crown, now so extensivelyused, is the invention of Dr. M. L. Logan. The method ofmounting is explained in all its details in the following articleby Dr. W. S. How : Fig. 85 shows a superior right central root, an end appear-ance of the same, and a Logan crown, front view. Fig. 86 ex- THE LOO AX CROWN. 65 hibits, at a ri2:ht angle to the plane of the first figure, the sameroot, its end, and the Logan crown, sido view. In both figuresthe root-canal is supposed to have been first drilled to a gaugeddepth with an engine twist-drill, No. 154, and then enlargedby means of a fissure-bur. No. 70, to the tapering form shown ;FiQ. 93. Fio. 94. FiQ. 95. Fig. 96.
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectcrowns, bookyear1889
