A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . a tray is employed—the form of which in certain essential particularsmust of necessity be left to the ingenuity of the operator—as no two cases arealike—it should be of that character to enable passing it back far enough to thenquickly carry it upward and forward into place, and of a form to hold sufficientplaster to be forced over the floor of the nares. The cup of the tray (Fig. 9) may be made of block tin that can be easily bentto curve forward over the bifurcated veliun-pala
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . a tray is employed—the form of which in certain essential particularsmust of necessity be left to the ingenuity of the operator—as no two cases arealike—it should be of that character to enable passing it back far enough to thenquickly carry it upward and forward into place, and of a form to hold sufficientplaster to be forced over the floor of the nares. The cup of the tray (Fig. 9) may be made of block tin that can be easily bentto curve forward over the bifurcated veliun-palati and palatal process. To this,firmly soft-solder a No. 9 nickel-silver wire handle, as shown. The cup portion may CHAPTER III. TECHNIC CONSTRUCTION OF VELUM-OBTURATOR 441 be further extended with a thin sheet of wax and carried into place while it is soft;this should leave plenty of room for the plaster, and avoid forcing the yieldingtissues too far out of place. Though this is of little importance, as the duplicateduvula and softer portion of the velum-palati, whatever their positions, are cut Fig. away on the model. The illustration shows a cross-section of the tray in will be noticed that the wire handle leaves sufficient space for placing the lingualportion with a spatula. When the tray and plaster are carried to place, allow the handle to rest uponthe incisor teeth to firmly steady it, and maintain this position while the second orlingual section is introduced and hardened. In those cases of non-irritability of the soft palate, or when cocainized, theintroduction of the tray containing the plaster may be immediately preceded byfirst introducing considerable plaster above the cleft with the spatula, as in largerclefts. This will insure obtaining a more extensive impression of the nasal large mouth-mirror should be held back of the plaster so as to prevent it after itleaves the spatula, from falling from its lodgment into the throat. If a suff
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
