The Dental cosmos . with the main wire on the labial surface and extending back, followingthe outline of the gum, to surround the bicuspids, with the wire endsleft long to act as springs on the lingual surface of the incisors. Thecross-bars to connect the sides of the crib extended over the grinding-surface at the junction of the bicuspids on either side. The inferiorfirst molars were at the outset pulpless, and were subsequently ex- Fig. tracted. Wire posts were soldered to the main wire, and curved insuitable form to allow room for the action of the lower lip and to enterthe tubes in th
The Dental cosmos . with the main wire on the labial surface and extending back, followingthe outline of the gum, to surround the bicuspids, with the wire endsleft long to act as springs on the lingual surface of the incisors. Thecross-bars to connect the sides of the crib extended over the grinding-surface at the junction of the bicuspids on either side. The inferiorfirst molars were at the outset pulpless, and were subsequently ex- Fig. tracted. Wire posts were soldered to the main wire, and curved insuitable form to allow room for the action of the lower lip and to enterthe tubes in the chin appliance at the proper angle. Two Germansilver wires were pivoted to the lower part of the chin apparatus, withthe ends projecting upward and backward sufficiently far and diverginguntil they were about one and one-half inches apart. The ends werethen bent at sharp angles and united with solder. A metal button CORRECTING IRREGULARITIES OF THE TEETH. 88l was soldered to each of these angles for the attachment of rubber bands,to exert the traction on the appliance. It is obvious that properlydirected traction on the chin-piece would force the crib backward,carrying all the inclosed lower incisors, cuspids, and bicuspids towardthe second molars, which were finally almost touched by the will be noticed that the arch of the inferior oral teeth was maintained Fig. 13.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
