Page 725 - My FlipBook

LABIAL ERUPTION. 723

each side, Mitli a tube on the buccal surface. Through these tubes
around the arch, and in contact with the prominent tooth, extend a

Fig. 662.

Double anchorage for elastic traction.
labial bow of stiff wire, Xo. 16 B. & S. gauge, screw-cut at the ends.
Place nuts on the ends of the bow spring behind the tubes. By turn-
FiG. 663.

Labial tmw fur drawiiiLT tnoth in.

ing the nuts pressure i.>^ brought to boar on the prominent tooth. To
prevent the wire sliding on the surface of the tooth, cement on it a
band on which is soldered a lug or a half-section of tubing in which
the wire can rest ; or u.'^e Angle's notched band. (See Fig. 771.) If
elastic wire, such as platinum-gold or German-silver wire, drawn hard,
is used, constant force can be applied, as, when the nuts are turned, the
wire will be l)cnt and in its tendency to straighten will press on the
tooth.
Fig. 664 shows an appliance wiiieh may be used with much satisfac-
tion. In this case the first molar has been previously extracted. Tiie