. The science and practice of dental surgery. KiG. 311.—Shows the wire bow and plain bands, with notch, on the central arranged to depress the incisor in its dotted line shows the bow at rest, and to make it an active force it is pulled down to rest in the notch on the plain band. from the labial surface of the bands on theincisors are arranged so as to engage the bowwhen it is sprung towards the incLsal edges ofthe teeth : agahi the force is transferred directfrom the bow to tlie teeth. Instead of soldering 200 spurs to the labial surface of the bands, theseam of the band may be ma
. The science and practice of dental surgery. KiG. 311.—Shows the wire bow and plain bands, with notch, on the central arranged to depress the incisor in its dotted line shows the bow at rest, and to make it an active force it is pulled down to rest in the notch on the plain band. from the labial surface of the bands on theincisors are arranged so as to engage the bowwhen it is sprung towards the incLsal edges ofthe teeth : agahi the force is transferred directfrom the bow to tlie teeth. Instead of soldering 200 spurs to the labial surface of the bands, theseam of the band may be made on the mostprominent part of tlie labial surface of thetooth and left projecting; a notch is then cutin the seam into ^\hich the bovv will just fit(see Fig. 315, reversed); the upper arm of thenotch takes the place of the spur and con-. FiG. 312.—Bows and accessories to depress the upperand lower incisors in their sockets. Plain bands on all incisors; to one a labial wire issoldered engaging spurs incisally on the otherthree bands; to this labial wire spurs aresoldered for the attachment of rubber bands toexert inter-maxillary force, the upper and lowerbows intervening, as shown. Rubber bandsmay also be used to effect medial or distal move-ment of any of the incisors, as shown, and thismovement may be assisted by turning that nutagainst the buccal tube away from which thetooth lias to move. Spurs on the buccal wireor bands at its extremities may be employedto prevent any lateral movement; spins mayalso be used to include another tooth in themedial or distal movement—one to which therubber band is not directly attached. sequently should be left longer; it is then betterable to support the springy bow. (b) Reciprocal Anchorage. Clamp-bands onfirst molars. The bow, not less than gauge 16 (B and S),is bent to pass ac
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
