Page 774 - My FlipBook

772 ORTHODONTIA AS AN OPERATIVE PROCKDURE.
by Dr. Kingslcy : ^ "Fig. 775 shows another application of tlie in-
clined plane somewhat out of the ordinary course. It was adapted
to the inside of the upper dental arch, and the inclined surface pro-
jected below and caught the lo\ver incisors. The object was, not to
protrude the lower teeth, but to change or junij) the bite in the case of
an excessively retreating lower jaw. In the engraving is shown a

Fig. 775.

Kingsley"s appliance for "jumping the bite."

gold bar worn across the front of the upper incisors to reduce their
prominence."
Figs. 776, 777 illustrate a case treated by Dr. E. H. Cutter of Cam-
l)ridge, Mass., and show the bite jumped half the width of a bicuspid.
He says:^ "I made a plate for the upper arch .... thickened only
behind the front teeth where depressions were made to receive the

Fig. 776.

Cutter's case of "jumping the bite."
points of the lower incisors . . . . and held firmly in place by wire
clasps encircling the first molars I made several plates of this
character, as the amount to be gained had to be gradually accomplished.
The patient was twelve years old, and but one permanent second molar
had erupted ; when the work was completed all four of these molars
' Oral Deformities, p. 84. ^ International Dental Journal, vol. xv. p. 355.