Page 147 - My FlipBook

CORRKCTIOX OF DKXTAl. I KRKC.rLAIUTl ES. 135
and ()i arc iisnalK' ciii])l< 'ved. I'^ig". 90 sliows Professor
Cluilfonrs niclliiul, wliicli is one ni the simplest and most
effective.
A platinum band, with short £^-old wires soldered to the
buccal and lingual sin'faces, is cemented to the tooth to be
moved, while a similar one is attached to a molar or other
anchor tooth. The wires on the anterior band are bent
forward, and those on the posterior one are curved back-
ward. Two rubber ring-s, caught over the gold hooks,
connect the two bands and )'ield the tractile power recjuired.

Fig. 90.

These rubber rings can be removed and replaced for cleans-
ing the teeth, or can be renewed at will by the patient. Two
rings can be attached to each pair of hooks, if greater power
be required, or the same object can be attained by cutting
wider rings from thicker tubing.
Fig. 91 illustrates another simple appliance for drawing
a cuspid back-ward and inw^ard. This was devised by Pro-
fessor E. H. Angle, and is a part of what is known as the
"Angle system of regulating."
The first molar is encircled by a metallic band, to which