A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . results in a bodily labial movement. Tiie open sides of the tubes cannot be seenin the illustration because they are turned toward the roof of the mouth; this causesthe spring bars to be locked in place without closing the tubes. Fig. The object of the-two-bend stationary anchorages is to distribute the extrusivespring force of the bars and prevent a supra-occlusal movement, as would natu-rally occur if this force were sustained by single molar anchorages. The disto-mesial
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . results in a bodily labial movement. Tiie open sides of the tubes cannot be seenin the illustration because they are turned toward the roof of the mouth; this causesthe spring bars to be locked in place without closing the tubes. Fig. The object of the-two-bend stationary anchorages is to distribute the extrusivespring force of the bars and prevent a supra-occlusal movement, as would natu-rally occur if this force were sustained by single molar anchorages. The disto-mesial and direct intermaxillary and other forces were continued with this appara- CHAPTER XX. MODERN PRINCIPLES AND METHODS 177 tus. The working-retainer is fully described under Principles and Technicsof Retention, in Chapter LIV. During the absence of the patient, she very faithfully kept up the applicationof the various forces. On Wednesday, August 29, 1917, eleven months after thecase was started, all the appliances were removed, and the impressions were takenfor the plaster casts shown in Fig. 116. Notwithstanding the unfortunate fact thatthere are only three lower incisors, the dentures are in fair occlusion, which timewill improve. Below, is a front occlusal view of the teeth with the final retainersin position. You may be able to see the supple
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