A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . as to take a position at the ex-treme occlusal zone. This acts as a retainer wherethe space has been widened and as a means forattaching elastic bands to the impacted hole that is bored into the tooth for thispurpose need not be deep if it takes the proper direction. The drill for boring the hole, and the wire which should exactly fit it—with noattempt to screw it in—should be about No. 19 or 20. In placing and forming thehook, use a straight piece of wire about five i
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . as to take a position at the ex-treme occlusal zone. This acts as a retainer wherethe space has been widened and as a means forattaching elastic bands to the impacted hole that is bored into the tooth for thispurpose need not be deep if it takes the proper direction. The drill for boring the hole, and the wire which should exactly fit it—with noattempt to screw it in—should be about No. 19 or 20. In placing and forming thehook, use a straight piece of wire about five inches long, well annealed at theattachment end. After cementing in place, cut the wire off, leaving sufficientlength to bend it close to the surface of the gum and opposite the direction of will cause the rubber ligatures to hug the tooth and thus exert little forceupon the wire attachment to dislodge it. When the impacted tooth has been forcedout of its imbedment sufficiently to enable the attachment of a band, it will com-monly require another appliance to place it in normal position. Fig. 368 PART VII. UNCLASSIFIED MALOCCLUSIONS A more forcible action of the elastics may be obtained by attaching them tothe teeth of the opposing jaw. Figs. 273 and 274 illustrate an ingenious andeffective method which was proposed by Dr. E. H. Angle in 1891. As early as 1868 Fig. 273. Fig. 274.
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