Page 781 - My FlipBook

L WER PR TR USION. 779

At the World's Columbian Dental Congress in 1893, Dr. C. S. Case
presented casts and appliances for this oi)eration, which are shown in
Chapter XXY., Figs. 839, 842, 893, and 895.

Fig. 7

Lower protrusion (fault iu both jaws).

Fig. 789.

Result of reciprocal appliance.
By this means the entire anterior plate of the alveolar process is
moved forward with the roots of the teeth and the sunken lip restored
to its natural fidness.
See facial contour in Figs. 840 and 843.
Surgical Treatment of Lower Protrusion.—The following extracts are
from a description, bv Dr. J. W. Whipple of St. Louis, of the case
shown in Fig. 790.
There had been apparently an abnormal growth of the body of the
maxilla between the first and second bicuspids on the left side and be-
tween the first molar and second bicuspid on the right side, the space
separating these teeth being respectively one-quarter and one-eighth of
an inch, causing the elongation of the jaw horizontally, which projected
the lower teeth a qiwrter of an inch beyond and in front of the upper
ones. The occlusion was destroyed. This elongation. Dr. Whipple