. A manual of mechanical dentistry and metallurgy . To vulcanize this it is not necessary to flask the denture inthe usual manner. Wet the plate and place plaster-of-Paris in the palatal surface; fill the flask with plaster andembed the denture in it, and place the lid on. When theplaster is hard, introduce the bolts, and vulcanize thirty-fiveminutes at 320° F. After cooling remove the flask andcarefully separate the plaster from the denture. The plateshould be trimmed and polished in the usual way. When Fig. polished and thoroughly cleaned the pink rubber may bebleached, and thus rendere
. A manual of mechanical dentistry and metallurgy . To vulcanize this it is not necessary to flask the denture inthe usual manner. Wet the plate and place plaster-of-Paris in the palatal surface; fill the flask with plaster andembed the denture in it, and place the lid on. When theplaster is hard, introduce the bolts, and vulcanize thirty-fiveminutes at 320° F. After cooling remove the flask andcarefully separate the plaster from the denture. The plateshould be trimmed and polished in the usual way. When Fig. polished and thoroughly cleaned the pink rubber may bebleached, and thus rendered brighter, by placing the den-ture in the sun in a covered glass vessel partially filled withalcohol. All trimming should be completed before bleach-ing, as only the surface of the rubber is changed in 30 shows the finished case. Gold Backing and Tongue.—In partial cases where thebite is so close that the antagonizing teeth come so near FLASKING, VULCANIZING AND FINISHING. 59 tlie gum that the thin neck of riihber running from the plateto the tooth or teeth would be too frail to support them,teeth with gold backings and tongues should be used. Inpreparing such a tooth, select a suitable plate tooth andgrind it to fit the plaster model; then fit the backing andtongue to the tooth, arrange them upon the cast to securethe proper bend and angle for the tongue (see Fig. 31),cement them together, invest, and solder. That portion of the gold plate to be embedded in therubber should have small gold o
Size: 2620px × 954px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidman, booksubjectmetallurgy
