A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER AAA/1 TYPE A. DIVISION CLASS II 263 The dento-facial correction of the disto-mesial malinterdigitation of the backteeth in this Type, which will often be found in perfect masticating occlusion,should appeal to the common sense of all orthodontists, as opposed to a reciprocalmovement of all the teeth to a normal occlusion, to say nothing about the correctionof facial outlines and the greater possibilities of permanency of retention. Fig. Fig. 184. Full upper Coronal
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . CHAPTER AAA/1 TYPE A. DIVISION CLASS II 263 The dento-facial correction of the disto-mesial malinterdigitation of the backteeth in this Type, which will often be found in perfect masticating occlusion,should appeal to the common sense of all orthodontists, as opposed to a reciprocalmovement of all the teeth to a normal occlusion, to say nothing about the correctionof facial outlines and the greater possibilities of permanency of retention. Fig. Fig. 184. Full upper Coronal Protrusion.—In Fig. 183, the three-band stationary anchor-ages carry two buccal tubes. The lower tubes are for No. 19 traction bars forretruding the cuspids, and as shown in the drawing, they are soldered at thegingival border of the bands, but preference is given to the root-wise extensionspreviously described. The upper tube is for a No. 22 arch traction bow for retrud-ing the incisors. The root-wise position of bothtubes aids in the stability of the upper anchorage tube attached to themodern root-wise attachments is commonlythe one chosen to move the cuspids, as shownin Fig. 184. See Stationary Anchorages. Chap-ter XV. An important feature of the apparatusthat should never be omitted, is the lingual hooks for the attachment of elasticsto prevent the rotation of the cuspids and aid in their retrusive movement. The
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