A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . in-flexible buccal devices. Again, it may be desired to move the premolars distallyto relieve a crowded maleruption of the cuspids, but with no lingual movement of the incisors. See Fig. 71. In addition to the long-bearing lingual tube sustaining the single molaranchorage through the medium of the lingualpush bow resting in the incisor hooks, the doublyreinforced and sustained anchorage may carry abuccal tube soldered to root-wise extensions for atraction bar to the malposed cus
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . in-flexible buccal devices. Again, it may be desired to move the premolars distallyto relieve a crowded maleruption of the cuspids, but with no lingual movement of the incisors. See Fig. 71. In addition to the long-bearing lingual tube sustaining the single molaranchorage through the medium of the lingualpush bow resting in the incisor hooks, the doublyreinforced and sustained anchorage may carry abuccal tube soldered to root-wise extensions for atraction bar to the malposed cuspids, and alsohooks for the attachment of elastics to move the premolars distally. A similar device is especially applicable for children who have inherited adecided protrusion of the lower teeth. The lingual supporting tubes should besufficiently large to allow the ends of the bow to easily glide into them as the incisorsare forced back with the labial traction bow. A practical result in the application ofthis method of treatment with a full description of the apparatus, will be found inChapter XLIV. Fig. CHAPTER XV. PRINCIPLES OF DENTAL ANCHORAGES 125 Reciprocating or Movable Anchorages Dental anchorages may be considered as any point of resistance which is madeto receive the reaction of the force required for the movement or correction ofmalposed teeth. Wherever it is possible to do so, these points of resistance shouldbe chosen with a view to utilizing the reactive force for a reciprocal movement ofother teeth that require correction. This is one of the most practically scientificlaws of orthodontia, though sadly neglected, and one, moreover, that is applicablein some form in almost every case of irregtilarity. In the choice or invention of a regulating apparatus, after the several requiredmovements of the case have been determined, a careful study of the demandswith the reciprocating possibilities in view, will present surprising opportunitiesfor its application. This
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