Identifier: dentalcosmos5419whit (find matches)
Title: The Dental cosmos
Year: 1912 (1910s)
Authors: White, J. D McQuillen, J. H. (John Hugh), 1826-1879 Ziegler, George Jacob, 1821-1895 White, James William, 1826-1891 Kirk, Edward C. (Edward Cameron), 1856-1933 Anthony, L. Pierce (Lovick Pierce), b. 1877
Subjects: Dentistry Dentistry
Publisher: Philadelphia, S. S. White Dental Manufacturing Co
Contributing Library: Yale University, Cushing/Whitney Medical Library
Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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with their tubular sheaths firmly brazedto the band at the most convenient point.By this means the firmest attachment ofthe arch to the teeth is secured, and thestrongest attainable anchorage—station-ary anchorage—gained. The early forms of the arch, i.e. flat,square, or half-round, have been changedto the most compact, sanitary, and elas-tic form, i.a the round form. The crude methods of controlling theadjustment of the arch as to size havebeen supplanted by the ideal method, thescrew, and to the screw has been addedas a valuable improvement the friction-sleeve nut, which in the most simplemanner effectually prevents the acciden-tal unturning of the nut, besides redu-cing the bulk of its square, exposed por-tion to the minimum, and consequentlylessening the inconvenience to the pa-tient. 853 854 THE DENTAL COSMOS. Another step of almost inestimable to metal ligatures. The fibrous ligaturesvalue in the use of the arch is the more involved much loss of power through Fig. 1. Fig. 4.
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perfecl control of the lone for moving socket, greatly disturbing the cellularteeth gained by the change from fibrous structure of the pericementum, and al- ANGLE. EVOLUTION OF ORTHODONTIA RECENT DEVELOPMENTS. 855 ways inciting inflammation and pain inproportion to the frequency of these dis-turbances, while with the use of a soft,tough wire ligature—one of brass beingthe best—loss of power through stretch-ing or slipping is practically eliminated,and what is of great importance, muchtime is thereby saved for both patientand orthodontist. The wire ligature mayalso be tightened by additional twists,thus avoiding the necessity for its fre-quent renewal and greatly lessening tis-sue disturbance, inflammation, and pain. convinced him that still further steps inits evolution were desirable, and probablypossible. To comprehend this clearly letus remember that by the manner inwhich the expansion arch is now used,Fig. G, the crowns of the teeth only arcmoved, or tipped, into position, wit

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