A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . materially interfere with the mesial movement in view. This is accomplished bypassing the lower arch-bow under premolar buccal hooks. If the mesial movement of the lower buccal teeth demanded for normal occlu-sion is not more than one-half the width of a cusp, it usually may be accomplishedfor youthful patients with the ultimate preservation of occlusal contact of themolar planes. That is, the inclination which the extent of the movement at firstgives to the molars, will ultimat
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . materially interfere with the mesial movement in view. This is accomplished bypassing the lower arch-bow under premolar buccal hooks. If the mesial movement of the lower buccal teeth demanded for normal occlu-sion is not more than one-half the width of a cusp, it usually may be accomplishedfor youthful patients with the ultimate preservation of occlusal contact of themolar planes. That is, the inclination which the extent of the movement at firstgives to the molars, will ultimately right itself if properly retained. In the chapter upon Principles and Technics of Retention will be found de-scribed methods for continuing the application of the intermaxillary force longafter the main work of correction is accomplished. This appliance is frequentlyplaced even before the normal relation of the buccal occlusion is attained. Cases occasionally arise in crowded premolar malalignments for which itseems desirable to utilize all of the intermaxillary force toward a labial movement. CHAPTER XXXII. TYPE B. DIVISIOX 1. CLASS II. 257 of the upper or the lower front teeth, with Httle or no reciprocating movement ofthe molars. Besides the act of uniting the teeth of one denture so as to retard orprevent a disto-mesial movement, the movement of the other denture from thesame force may be increased through the mechanical advantage of applying theforce to a few teeth at a time, as mentioned elsewhere. F,o 180. In Fig. 180 the dental arch-bow (No. 18, or 19, extra hard) engages with the labial teeth by meansof the open-tube attachments, and passes underthe buccal hooks of the premolars, and thenthrough No. 18 tubes on the first molars; thethreaded ends finally resting in telescope or slid-ing tubes A, within the anchor tubes B on thesecond molars. These tubes have thin walls(No. 32). To one end of tube A (shown dis-assembled), which is about one-tenth of an inchlonger tha
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