A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . will not question the adequacy of the continuous force when properly applied forthe rotation of teeth. There are many ways in which the elastic rings may be applied that will sug-gest themselves to ingenious minds according to the conditions and requirements. When only one tooth requires rotating,a loop of Corticelli A silk ligature maybe passed over a lingual pin-head attach-ment, and the ends carried under a Tattachment on the arch-bow and tied toan election ring which is loop
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . will not question the adequacy of the continuous force when properly applied forthe rotation of teeth. There are many ways in which the elastic rings may be applied that will sug-gest themselves to ingenious minds according to the conditions and requirements. When only one tooth requires rotating,a loop of Corticelli A silk ligature maybe passed over a lingual pin-head attach-ment, and the ends carried under a Tattachment on the arch-bow and tied toan election ring which is looped over theanchorage attachment, as shown in In this way you can increase theelastic force to any desired degree bydoubling the ring back on itself. The Tattachment is made by soldering a spurto a short thin-walled tube of a size to exactly fit the arch-bow to which it is soft-soldered at the required position. Were it not for this attachment on the bow,the force of the elastic upon the cuspid over which it would pass wotdd contrudeit, unless it was secured to the bow with a band attachment. Fig. Silk LioAxxniES for Rotating, Etc. Silk and linen thread have been used for all time in the regulation of teeth;but the honor is due to Dr. W. T. Younger for first practically demonstrating theremarkable effectiveness of very small silk ligatures, and for special methods ofsecuring them to teeth to obtain the greatest possible advantage of their qualities. For maltumed teeth that require a slight rotating force for their correction,and for the prevention of rotation movement from the action or misapplication ofother forces, Corticelli A silk ligatures, if properly applied, will be found invalu-able. The retention of a rotating ligature when tied to a tooth, and its subsequentpotential action, is due quite as much to the elastic resilient quality—found onlyin the smallest of silk threads—as to the method of its application. An importantadvantage of the smaller sizes
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
