. The science and practice of dental surgery. ate tube, one endof which is engaged by the nut on the wire. The applica-tion of this method is shown in Fig. 341. This type ofattaclunent has the advantage of being adjustable. W^henciicumstances demand, the nut may engage the distal endof the tube; its fixation in the mouth would be moredifficult. taining their general relationship to one the text, soldering all the parts to the basewire is assumed, to avoid constant repetition,but it must be bonie in mind that it is preferablenot to attach the ^\ire rigidly to all the bandsunless this
. The science and practice of dental surgery. ate tube, one endof which is engaged by the nut on the wire. The applica-tion of this method is shown in Fig. 341. This type ofattaclunent has the advantage of being adjustable. W^henciicumstances demand, the nut may engage the distal endof the tube; its fixation in the mouth would be moredifficult. taining their general relationship to one the text, soldering all the parts to the basewire is assumed, to avoid constant repetition,but it must be bonie in mind that it is preferablenot to attach the ^\ire rigidly to all the bandsunless this is specially referred to. B. Removable. liemovable Appliances consist of—- 1. Vulcanite Plates; 2. Metal plates of tlie same tjiie as vulcanite plates, or of the Jackson type with askeleton base; 230 3. Plates combining the features of (1) and(2) (see Figs. 342, 343). Wire attachments are used in connectionwith the plates when necessary, and may befixed directly to the teeth or to the plate; theformer method implies a combination of fixed. Fig. 341.—Retention of buccal movement of all theteeth.—Reciprocal reinforced and .simple reinforcedanchorage. The retainer consists of a lingual wire and plain bandswith accessories on 5 ] 15. The wire is not solderedto any of the bands. On the right premolar band the accessory is a shorttube, engaged medially by a nut on the lingual wire,which in this position is threaded; on the leftpremolar band the accessory is a wire loop to engagethe lingual wire, on which there is a lug engaging theloop. The lug and nut prevent lingual movementof the incisors. A cross-section of the left central incisor, havingcemented to it a plain band with loop, beforeclosing, and lingual wire in position, is shown onthe right of the figure. The gingival end of theloop is left free so that if the loop is not efficienta wire ligature may engage this free end and thelingual wire to secure the two together. Noticethat the loops are arranged diagonally across th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
