Principles and practice of operative dentistry . are so joined as to form a letter S. They are non-motile, and multi-ply by fission, and during this process they form chains of cocci. Thisorganism possesses many of the characteristics of the Finkler-Prior ba-cillus, but whether it is identical has never been determined. Spirochsete Dentium (denticola).—Miller found this organism () almost universally present, not, however, in decaying dentin, but inthe same locations as the Spirillum sputigenum,—namely, at the marginsof the gums, in the deposits found there, especially when the gingival


Principles and practice of operative dentistry . are so joined as to form a letter S. They are non-motile, and multi-ply by fission, and during this process they form chains of cocci. Thisorganism possesses many of the characteristics of the Finkler-Prior ba-cillus, but whether it is identical has never been determined. Spirochsete Dentium (denticola).—Miller found this organism () almost universally present, not, however, in decaying dentin, but inthe same locations as the Spirillum sputigenum,—namely, at the marginsof the gums, in the deposits found there, especially when the gingival bor-ders are in an inflamed condition. This organism is of spiral form, from8 to 25 ;jl long, of unequal thickness, very irregular windings, and withmarked differences in their susceptibility to staining reagents. Miller is not sure whether they are two separate organisms, or onlydifferent stages in the development of the Spirillum sputigenum. In Fig. 247 it will be noticed that the same spiral or comma-shapedbacilli have flao-ellse. Jit $. Yi- Fig. 24t>.—Spirochsetadentium (denticola) and leptothrix threads. X 1000. MP N /. vfA, V Fig. 247.—Spirochseta dentium (denticola), showing their fiagella. ?: 1000.


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdentist, bookyear1901