A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER XLIV. DIVISION 3. CLASS III 313 that it has arisen from a marked hereditary strain, the extraction of the first lowerpremolars is advisable, to be followed with the same rules of treatment as for pro-truded uppers. The regulation of the upper should be guided by the characterand degree of retrusion, while a perfect disto-mesial and bucco-lingual interdigi-tation of buccal cusps goes without saying. The quite remarkable improvement to the facial outlines in these cases by
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER XLIV. DIVISION 3. CLASS III 313 that it has arisen from a marked hereditary strain, the extraction of the first lowerpremolars is advisable, to be followed with the same rules of treatment as for pro-truded uppers. The regulation of the upper should be guided by the characterand degree of retrusion, while a perfect disto-mesial and bucco-lingual interdigi-tation of buccal cusps goes without saying. The quite remarkable improvement to the facial outlines in these cases by the pro-trusive movement of the upper and the retrusive movement of the lower, is shown bythe profile casts of the finished cases. This is no more than any orthodontist mayeasily obtain in all cases by a scientific application of mechanical force, accompaniedwith a rational acceptance of necessities, and an appreciation of the highest attain-ments in facial as well as dental art. Fig. Fig. 219 represents a case which has been especially chosen from many ofthis Division of malocclusion in the authors practice, to illustrate the practicalapplicability of the foregoing statement. It was made from the facial and dentalcasts of a woman twenty-four years of age, and repwesents one of the most pro-nounced and difficult cases of this type which the author has ever been called uponto treat. Every feature of the physiognomy outside the dento-facial area was per-fect, which in connection with the dark brown hair, beautiful eyes, and smootholive complexion, gave one the greatest desire to correct the deformed area causedby the malocclusion. The occlusion of the teeth was so imperfect that a healthfulmastication of food was impossible. The main object of treatment, however, wasto get rid of the facial deformity (which she had borne for so many years, not know-ing that any correction was possible). 314 PART VI. DENTO-FACIAL MALOCCLUSIONS Fig. 220. In order to accomplish this, th
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