File:Principles and practice of operative dentistry (1920) (14595921337).jpg

Identifier: principlespracti1920mars (find matches)
Title: Principles and practice of operative dentistry
Year: 1920 (1920s)
Authors: Marshall, John Sayre, 1846-1922
Subjects: Dentistry, Operative
Publisher: Philadelphia and London, J.B. Lippincott
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
., and masses of diplococci ;the large dumb-bell bacteria being derived from the diplococci, the twooriginal cocci linking together. The chains are often surrounded bymasses of diplococci, while in the same chain small diplococci may alter-nate with elliptical bacteria and medium-sized dumb-bells, all perfectlyequal, which form the largest number. The third phase is generally met with in the salivary calculus of theteeth. Its predominant elements are large filaments, often long, bent,and reunited in bundles, and stumps. Two notable features are observedin the large filaments, which have not been described by any previousauthor. The first of these is the division of the radial extremity of thefilament into two or three branches (Plate VL, Fig, 9). In a the filamentis broken towards the top and exhibits two long roots ; in & there are threehood-shaped roots, both appearing to be swollen at their ends (c) likehaustoria.^ The author raises the query of the use of these barbs or roots,
Text Appearing After Image:
PLATE VIII.

Note About Images