The Dental cosmos . ithin a months time. A variety of methods have been adopted to keep this form of appli-ance from pressing on the gum and slipping offfrom the teeth. Some the most rapid in moving the teeth, and of the least inconvenience tothe patient and operator of any yet used. The inner bar can be stiff-ened at any place desired by winding with binding-wire, and flowingover it tin or soft solder, or an extra wire can be added in a similarmanner at any stage of the operation. A spring can extend from the main wire to either side of the archto move teeth out into line, or to the labial si
The Dental cosmos . ithin a months time. A variety of methods have been adopted to keep this form of appli-ance from pressing on the gum and slipping offfrom the teeth. Some the most rapid in moving the teeth, and of the least inconvenience tothe patient and operator of any yet used. The inner bar can be stiff-ened at any place desired by winding with binding-wire, and flowingover it tin or soft solder, or an extra wire can be added in a similarmanner at any stage of the operation. A spring can extend from the main wire to either side of the archto move teeth out into line, or to the labial side of the arch to forceprominent teeth back to a proper position, or be adapted to rotate oneor more incisors by pressing them against the main wire. Fig. 2.—The arch can be easily expanded in many cases with asimilar spring appliance. When used for that purpose, the principalor foundation spring can be arranged either on the inside or outside ofthe arch, as is found best suited to the individual case, although it. Fig. 2. of these have been principal forms werewire points soldered to themain wire and reaching intothe spaces between the teethto keep the appliance fromslipping off, and a similarwire extended on to thegrinding-surface, usually atthe junction of two teeth, tokeep the fixture from press-ing on the gum. This system has proven tobe, for a certain class of cases, CORRECTING IRREGULARITIES OF THE TEETH. 875 should in most cases have a small loop formed in the wire at themedian line of the arch. This point I referred to in a previous paper in the Dental Cosmos,vol. xxix, p. 373, describing a method of spreading the anterior partof the lower arch with a plate without covering the teeth. The samewire should extend back along the line of the necks of the teeth andclasp around the last one in the arch, and continue forward usually tothe mesial side of the first bicuspid, and there extend over the grinding-surface and be soldered to the original wire, which w
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectdentist, bookyear1890
