A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . 264 PART VI. DENTO-FACIAL MALOCCLUSIONS open-tube attachments on the incisor bands are of very thin material (20-30), andwhen these are properly locked around the small wire arch-bow (No. 22), with allsharp edges removed and finished, they present no unpleasant and irritating prom-inence to the lips. The labial surfaces of the incisor bands should be considerablynarrowed, and if they are of nickel silver, they should be covered with 18k goldsolder, and this with the small size o
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . 264 PART VI. DENTO-FACIAL MALOCCLUSIONS open-tube attachments on the incisor bands are of very thin material (20-30), andwhen these are properly locked around the small wire arch-bow (No. 22), with allsharp edges removed and finished, they present no unpleasant and irritating prom-inence to the lips. The labial surfaces of the incisor bands should be considerablynarrowed, and if they are of nickel silver, they should be covered with 18k goldsolder, and this with the small size of the arch-bow aids in the inconspicuousnessof the apparatus. Fig. When any doubt arises in regard to the stability of the anchorages, the occip-ital and intermaxillary forces should be employed. In nearly all cases of thisType, the occipital force with post-rest bow A is indicated. Moderate Upper Coronal Protrusion.—When the upper buccal teeth are inmoderate mesial malrelation, or not more than one-half the width of a cusp infront of a normal occlusion, occluding end on, and the relation of the lowerlip to the chin is one that will not bear the slightest protruding movement, theextraction of the second premolars is often indicated for patients older than twelveyears. Frequently, the extraction of the first premolar on one side, and that of thesecond upon the other, is demanded, because of the difference in the mesio-distalocclusion of the buccal teeth. When the malocclusion is bilateral, with a moderateupper protrusion, be careful that it is not partially a lower retriision, or sufficientlyso as to warrant correction with the intermaxillary force
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