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OBTURATORS AND AU'IT ITCTAL VELUM. 121
Artificial Palates. The following- case (Fig. yT^) pre-
sents some unusual ditVicuUies in not having any teeth to
aid in supporting the appliance, making it necessary to
adopt a plate which should not only sustain the teeth for
Fig. 76.
mastication, but bear the additional responsibility of sup-
porting the artificial palate.
Fig. 74 illustrates the appliance as prepared for the
mouth. The plate was made of gold and formed as is
usual, except at the median line on the posterior border
(marked c), where a groove was located to receive the
attachment for the artificial palate. The wings marked a
