A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER XXIX. DIVISIOX 2. CLASS I. 243 remaining features, as in retrusion of the lower denture in Division 1, Class II—and retrusion of the upper in Division 1, Class III. The main reason why these cases do not present for treatment is the same asthat which prevents the presentation of bimaxillary protrusions, i. e., becausethe dentures in these two characters are in normal occlusion, or nearly so, andconsequently these patients arc rarely, if ever, told that the facial outline
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER XXIX. DIVISIOX 2. CLASS I. 243 remaining features, as in retrusion of the lower denture in Division 1, Class II—and retrusion of the upper in Division 1, Class III. The main reason why these cases do not present for treatment is the same asthat which prevents the presentation of bimaxillary protrusions, i. e., becausethe dentures in these two characters are in normal occlusion, or nearly so, andconsequently these patients arc rarely, if ever, told that the facial outlines can beeasily and greatly beautified by a labio-lingual movement of the front teeth, whichcan be as easily retained as retrusions and protrusions of single dentures. Fig. There have been only two well defined cases presented for treatment in theauthors practice. One of these is shown on the right of Fig. 165. After the casewas started some years ago, the family moved away, and the treatment of thecase was dropped. Fig. 168 shows on the left the beginning facial and dental casts of a casewhich has been recently finished in the authors practice, as shown on the will be seen that the first and second upper and lower premolars on the rightside, and second premolars on the left side are missing, the germs being extinct. The main thing to be accomplished in this case, as in many others whereseveral permanent teeth are missing, is the correction of the facial outlines, leav- 244 PART VI. DENTO-FACIAL MALOCCLUSIONS ing the teeth ultimately in a position to permanently support bridge dentures forocclusion and retention. The treatment, after the alignment of the front teeth,consisted in a bodily labial movement of the upper and lower incisors, utilizing
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