A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . l play of the velum-palati in swallowing, etc. CHAPTER IV THE TRIAL-MODEL OF THE OBTURATOR The surface of the plaster model being rubbed with fine soapstone, selecta piece of tough modeling-compound and form it into a solid ball about the size of ahickory nut, and press it into the cleft of the model and spread it out above andbelow to about the thickness of a rubber plate over the lingual and nasal it from the cleft while it is partially soft and trim off excess
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . l play of the velum-palati in swallowing, etc. CHAPTER IV THE TRIAL-MODEL OF THE OBTURATOR The surface of the plaster model being rubbed with fine soapstone, selecta piece of tough modeling-compound and form it into a solid ball about the size of ahickory nut, and press it into the cleft of the model and spread it out above andbelow to about the thickness of a rubber plate over the lingual and nasal it from the cleft while it is partially soft and trim off excess with replace and dip the whole into warm water, and continue the forming andtrimming of the body of the trial-model in this way until ready to try in the mouth. Figs. 21 and 22 represent respectively, the lingual and nasal views showingthe partially formed trial-model in position. The oral portion of the trial-model,shown in Fig. 21, should usually extend over the roof of the mouth no further thanabout three-eighths of an inch from the borders of the cleft, be the cleft large or Fig. 21. Fig.
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
