A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . L MALOCCLUSIONS lip and the end of the nose. The amount of difference in the facial outlines of thetwo faces on the left is shown on the right, which illustrates how a very littledepression of the central features of the physiognomy, shown in the first figure,will produce the effect of prognathism of the lower jaw. If the cross lines of thesefigures were removed, one would hardly believe that the harmonizing effect in thecentral face was not partly produced by retruding the outl
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . L MALOCCLUSIONS lip and the end of the nose. The amount of difference in the facial outlines of thetwo faces on the left is shown on the right, which illustrates how a very littledepression of the central features of the physiognomy, shown in the first figure,will produce the effect of prognathism of the lower jaw. If the cross lines of thesefigures were removed, one would hardly believe that the harmonizing effect in thecentral face was not partly produced by retruding the outlines of the lower lipand chin, or that it had been accomplished with so little change as that shown onthe right. This change is exactly that which may be accomplished in any caseimder eighteen years of age, with bodily labial force properly applied to the upperfront teeth. Again, force may be applied so as to move any one of the dento-facial zonesmainly, or it may protrude one zone and at the same time retrude the principles within the possibilities of force, are of the greatest importance Fig. in the esthetic correction of facial outlines, and are among the main principles ofthe science which have tended most to raise this branch of dentistry above the ordi-nary methods of orthodontia in which the crowns of the teeth alone are a part of the training in facial diagnosis, and also as an education in thepossibilities of practice, examine carefully each one of the physiognomies in , which represent the correction of a full upper protrusion and a full upperretrusion. Give attention first to the original conditions as shown by the facialcasts on the left. Please note that the chin and lower lip in both these cases arein normal pose, or nearly so, in relation to the unchangeable area. What appears CHAPTER XXI. DIAGNOSIS AND TREATMENT 189 to be a deficient chin in the upper case, and a too prominent one in the lower, isdue to a visual error caused by
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticaltre, bookyear1921
