Dental cosmos . two second bicuspidsor first molars ; the central bands are soldered together, at the same time at-taching a small strip of plate, which upon being bent upward, forms a sup-port for the center of the curved wire. Upon the palatal surfaces of theposterior bands is soldered a section of split tubing, which forms a troughagainst which the extremities of the wire rest. When the appliance is thusfar completed it is placed upon the model, and a piece of piano-wire of suf-ficient length is bent to conform to the inner surface of the arch (assumingsomewhat of a U shape.) This wire, as
Dental cosmos . two second bicuspidsor first molars ; the central bands are soldered together, at the same time at-taching a small strip of plate, which upon being bent upward, forms a sup-port for the center of the curved wire. Upon the palatal surfaces of theposterior bands is soldered a section of split tubing, which forms a troughagainst which the extremities of the wire rest. When the appliance is thusfar completed it is placed upon the model, and a piece of piano-wire of suf-ficient length is bent to conform to the inner surface of the arch (assumingsomewhat of a U shape.) This wire, as will be noticed, is not attached to theother parts, hence admits of easy removal, either for cleansing, readjusting,or to substitute a larger or smaller wire, to produce greater or less pressureas the case demands. A slight modification of this appliance may be made to include anotherclass of irregularities,—viz, protruding centrals. In such cases the first bicuspids, or possibly the cuspids, should be banded,. HINTS, QUERIES, AND COMMENTS. 50I instead of second bicuspids or first molars ; then, proceeding as before, bothretraction of centrals and expansion of arch can be accomplished simultane-ously. Should a tooth be inside the arch, by shaping the wire to strike this tooth itmay be forced into proper position. A tooth outside the arch may also bebrought back by attaching it by ligature to the wire. Thus, while teeth may be brought into proper position in the arch, the pro-cess of expansion may proceed at the same time, if desired. This processis applicable with equal facility and effectiveness to either the upper or lowerteeth. The simplicity of this appliance is not its only recommendation, as I feelsure that a trial will prove it to be of value for the purposes designed.—H. Lin-denberger, Bowling Green, Mo. To the Editor of the Dental Cosmos : Sir,—I herewith send you model of (to me) an interesting case, taken froma child two and a half years of age ; Irish parents,
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Keywords: ., bookauthor, bookcentury1800, bookdecade1890, booksubjectdentistry
