A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . e a judicious employment ofa doubled strand of the smallest size of thewires is a valuable adjunct in the authors hands, its most effectiveapplication for the rotation of teeth is inconjunction with a resilient alignment arch-bow Nos. 22 to 26, so that the elasticityof the bow may be utilized to add a poten-tial quality to the force for its greater con-tinued action. In Fig. 244, the ends of the wires areshown more twisted than they would be atfirst, especially up
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . e a judicious employment ofa doubled strand of the smallest size of thewires is a valuable adjunct in the authors hands, its most effectiveapplication for the rotation of teeth is inconjunction with a resilient alignment arch-bow Nos. 22 to 26, so that the elasticityof the bow may be utilized to add a poten-tial quality to the force for its greater con-tinued action. In Fig. 244, the ends of the wires areshown more twisted than they would be atfirst, especially upon a heavier bow, thepurpose being to show how they may betwisted upon the lighter spring arch-bowswhose potential resiliency would exert amore gradual force and not require the repeated painful renewals of the liga-tures which commonly break with a subsequent twist. The projecting ends ofthe wires are intended to be tucked back out of irritating prominence. The most perfect method of applying the wire ligatures is described by as follows: When applying a wire ligature, a piece long enough to be firmly. CHAPTER XLVIII. MALTURNED TEETH 343 grasped by both hands should be used so that strong tension may be exerted whenmaking the twist. This should never be more than three-fourths of a turn at surplus ends are then clipped oflf, leaving projections one-eighth of an inchlong. These ends are then curled under the arch, thus providing a smooth surfaceto the lips. Elastic Rings for Rotating.—One of the most convenient, effective, and easilyadjusted methods of rotating contruded lower incisors and other teeth which arenot extensively maltumed, is with the employment of elastic rings. Those whohave witnessed the wonderful results accomplished by the intermaxillary elasticswill 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
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