Page 768 - My FlipBook

768 ORTHODONTIA AS AN OPERATIVE PROCEDURE.
In obstinate cases it wonld be the best appliance, for sometimes with
the bow the teeth crowd together and tend to overlap. This is impos-
sible with Anglo's appliance, for all the force is ap])lied to the canines,
which in turn draw the incisors alontr with them.

Fi(i. 7r>;^.

Jackson's method.
The anterior teeth may be moved back by means of a plate and
elastic bands such as shown in Fig. 761. The plate should be well
secured by clasps around the molars.
Fig. 762 shows Dr. Kingsley's plate with a labial bow of stiff wire,
the elasticity of which is depended upon for moving the anterior teeth.
At each visit of the patient the ends of the bow are bent so as to re-

FiG. 764. Fig. 765.

Case of upper protrusion. Result of treatment with cap and bit.
new the pressure. This is an excellent appliance for reducing a pointed
arch.
It is sometimes advisable to retract the canines first, by some of the
methods described in Class 5, and then the incisors by the plan just
mentioned.