. Orthodontia, or malposition of the human teeth; its prevention and remedy . Expansion of Lower Arch. (Goddard.). 170 ORTHODONTIA. ?desired, it may be accomplished by means of one of theappliances shown on pp. 134 and 135, or by a modification?of the Coffin split plate devised by Prof. Goddard. Thelatter is shown in Fig. 122. As will be seen, there are two corrugated piano-wires attached to the rubber plate,one on each side near thefree margins, while the plateis split laterally just back ofthe incisor teeth. As in othersplit plates for anterior ex-pansion, this plate is made inone piece and
. Orthodontia, or malposition of the human teeth; its prevention and remedy . Expansion of Lower Arch. (Goddard.). 170 ORTHODONTIA. ?desired, it may be accomplished by means of one of theappliances shown on pp. 134 and 135, or by a modification?of the Coffin split plate devised by Prof. Goddard. Thelatter is shown in Fig. 122. As will be seen, there are two corrugated piano-wires attached to the rubber plate,one on each side near thefree margins, while the plateis split laterally just back ofthe incisor teeth. As in othersplit plates for anterior ex-pansion, this plate is made inone piece and the wires ar-ranged so that their anteriorends are embedded in theportion to be detached, whilethe posterior ends are fast- Goddards split Vulcanite Plate. ^^^^^ ^^ ^j^^ ^^-^ ^^^^ ^^ ^^^ plate. After the completion of the plate the front portion isseparated by means of a jewelers saw, and pressure is pro-duced by stretching the wires from time to time. The anterior portion is kept down to its place by beingligated to the central incisors. In using this form of platethe author has found it more convenient
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidorthodontiaormal00guil
