. A manual of mechanical dentistry and metallurgy . mastication, but bear the additional responsibility of sup-porting the artificial palate. Fig. 74 illustrates the appliance as prepared for themouth. The plate was made of gold and formed as isusual, except at the median line on the posterior border(marked c), where a groove was located to receive theattachment for the artificial palate. The wings marked a 122 MECHANTCAL DENTISTRY AND METALLURGY. and B are made of soft ni1)l)er; the frame to support themis made of gold, witli a joint to provide for the perpenchc-nlar motion of the natural pal
. A manual of mechanical dentistry and metallurgy . mastication, but bear the additional responsibility of sup-porting the artificial palate. Fig. 74 illustrates the appliance as prepared for themouth. The plate was made of gold and formed as isusual, except at the median line on the posterior border(marked c), where a groove was located to receive theattachment for the artificial palate. The wings marked a 122 MECHANTCAL DENTISTRY AND METALLURGY. and B are made of soft ni1)l)er; the frame to support themis made of gold, 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 itsseveral parts. Letter c shows the tongue, which enters thegroove in the plate and connects them. Artificial Palates for Congenital Fissure.—To further illustrate Dr. Kingleys methods, the follow^ing case is presented. Fig. Fig. 76 represents a model of a fissured palate, compli-cated with hare-lip on the left side of the mesial line. Thereis a division, also, of the maxilla and the alveolar process,the sides being covered with mucous membrane, which comein contact with each other but are not united. The leftlateral incisor and left cuspid tooth are not developed. Fig. yj represents the artificial velum, as viewed fromits superior surface, together with the attachment and twoartificial teeth to fill the vacancy. OBTURATORS AND ARTIFICIAL VKLUM. 12 The lettered portion of this appHance is made of soft vul-canized rubber; its attachment to the teeth of hard vulcan-ized rubber, to which the velum is connected by a stout goldpin firmly embedded at one end in the hard rubber other end has a head, marked c, which, being consid-erablv larger than the pin, and also the corresponding holein the velum, it is forced through, the elasticity of the Fig. 79.
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Keywords: ., bookcentury1900, bookdecade1900, bookidman, booksubjectmetallurgy
