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122 MECHANTCAL DENTISTRY AND METALLURGY.
and B are made of soft ni1)l)er; the frame to support them
is made of g'old, witli a joint to provide for the perpenchc-
nlar motion of the natural palate, as in the case of the obtu-
rator represented in Fig. 72.
Fig. 75 represents the artificial palate separated into its
several parts. Letter c shows the tongue, which enters the
groove in the plate and connects them.
Artificial Palates for Congenital Fissure.—To further
illustrate Dr. Kingley's methods, the follow^ing case is
presented.
Fig. 78.

Fig. 76 represents a model of a fissured palate, compli-
cated with hare-lip on the left side of the mesial line. There
is a division, also, of the maxilla and the alveolar process,
the sides being covered with mucous membrane, which come
in contact with each other but are not united. The left
lateral incisor and left cuspid tooth are not developed.
Fig. yj represents the artificial velum, as viewed from
its superior surface, together with the attachment and two
artificial teeth to fill the vacancy.