Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . ng off, and a similar wire extending to the grinding surface,usually at the junction of two teeth, to keep it from pressing on thegum (see International Dental Journal, vol. XI, p. 199). This system has proven the most rapid in moving the teeth, andthe least inconvenient to the patient and operator of any yet used,for a certain class of cases. The inner bar can be stiffened at any place desired by windingwith binding wire, and flowing over it tin or soft solder. Or anextra-wire can be added in a similar mann
Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . ng off, and a similar wire extending to the grinding surface,usually at the junction of two teeth, to keep it from pressing on thegum (see International Dental Journal, vol. XI, p. 199). This system has proven the most rapid in moving the teeth, andthe least inconvenient to the patient and operator of any yet used,for a certain class of cases. The inner bar can be stiffened at any place desired by windingwith binding wire, and flowing over it tin or soft solder. Or anextra-wire can be added in a similar manner at any stage of theoperation. A spring can extend from the main wire, either side of the arch,to move teeth out into line, or to the labial side of the arch to forceprominent teeth back to a proper position, or to rotate one or moreincisors by pressing them against the main wire. Fig. 2. The arch can be easily expanded in many cases witha similar spring appliance. When used for that purpose the principal orfoundation spring can be arranged either on the inside, or on the outside. <q$ ?••? Fie. 2. of the arch, as is found best suited to the individual case. Althoughit should, in most cases, have a small loop formed in the wire at themedium line of the arch. 122 Abtheilung XIV: Zahnheilkunde. This point I referred to in a previous paper in describing amethod of spreading the anterior part of the lower arch with a platewithout covering the teeth, which was published in the Proceedings ofthe N. Y. Odontological Society 1887. Cosmos Vol. 29 P. 373. The same wire should extend back along the line of the necksof the teeth and clasp around the last one in the arch, and continueforward usually to the mesial side of the first bicuspid, and there ex-tend over the grinding surface, and be soldered to the original wire,which will keep the appliance from pressing on the gum, and claspthe teeth firmly. The incisors can often be moved forward into line by the foun-dation spring at th
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