A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . he obturator, these spacesmust be closed. This procedure is described in Chapter V. The Veil of the Obturator.—When satisfied withthe form and fit of the body of the trial-model, show-ing that another impression will not be necessary tosecure perfect coaptation to the hard surfaces for thisportion of the obturator—the next move is to arrangefor a wire loop guide for forming and fitting the veilof the obturator. Constructing the Veil of the Obturator Fig. 23 is a nasal view of th
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . he obturator, these spacesmust be closed. This procedure is described in Chapter V. The Veil of the Obturator.—When satisfied withthe form and fit of the body of the trial-model, show-ing that another impression will not be necessary tosecure perfect coaptation to the hard surfaces for thisportion of the obturator—the next move is to arrangefor a wire loop guide for forming and fitting the veilof the obturator. Constructing the Veil of the Obturator Fig. 23 is a nasal view of the plaster-model withthe partially formed trial-model in place, showingshort pieces of tubing m (No. 23 nickel-silverrotating tube) imbedded in the compound, with acopper wire n in position, the loop being bentto conform somewhat to the size and form of thepharyngeal walls. This is for the purpose of exactly gauging the extent and positionof the veil of the obtiu-ator by a visual observation of the pharyngeal walls aboveand below the loop, during a physiologic action of the muscles. This enables one Fig. 452 PART IX. THE PROSTHETIC CORRECTION OF CLEFT PALATE to form and place the wire and ultimate border of the veil exactly along the linesof physiologic demands, thus freeing this most important part of the whole opera-tion from the guesswork of former methods which have always debarred thescientific advancement of the prosthetic correction of this deformity. In the first trials, force the loop well into the tubes to insure against having ittoo large, and to accustom the patient to its introduction. It can then be enlargedand shaped to conform to the pharyngeal wails during the contraction of thezone which is to determine the outline of the borders of the final veil. In the preliminary and present study of the pharynx, one should note first,the position of the greatest forward extension of the superior pharyngeal can easily be ascertained by titillating the t
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