Prosthetic dentistry / by James Harrison Prothero.

  • Prothero, James Harrison.
Date:
1916
Catalogue details

Licence: Public Domain Mark

Credit: Prosthetic dentistry / by James Harrison Prothero. Source: Wellcome Collection.

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    terdie metal—Casting the counterdie—Construction of the counterdie by dip- ping—Separation of the die and counterdie—Partial counterdies, construction of—Matrix counterdies—Parker shot swager—Counterdies for partial cases. Pk Lia ae ee me De ed ee hk ei eau an begessde9 to. el65 CHAPTER XII CONSTRUCTION OF SWAGED DENTURE BASES OF GOLD—(Upper Cases) Securing pattern for the gold plate—Carat and gauges of gold used for denture bases—Annealing the plate—Oiling the die and counterdie—Cleansing the plate—Pickling—Conforming the plate to die—Upper cases—Various steps of—Use of partial counterdies—Swaging in the counterdie—Final trimming and finish—Securing anchorage for the teeth to baseplate—Various means employed—Forming peripheral shoulder for finish of the vuleanite—Locating position of wire line on baseplate—Attaching wire anchorage loops—Swaging full lower denture bases—Various steps described—Construction of partial baseplates of gold—Various ways of reinforcing the baseplate—How to esti- mate the proper thickness of a double baseplate—Soldering doubled bases— Application of frictional appliances in partial cases—Method of securing exact relationship—Attaching teeth to baseplate by soldering..... Pages 166 to 189 CHAPTER XIII ALUMINUM BASE DENTURES Cast bases of aluminum—Cause of warpage in cast bases—Imperfect density of cast bases—Action of oral fluids on aluminum—Granular structure of alumi- num—Casting by the indirect method—Technic of forming the wax model— Investment of the wax model—Preparing the case for casting—Casting the fused metal—Finishing and swaging—Attaching teeth to base with vulcanite —Direct method of producing a cast base aluminum denture—Use of cen- trifugal casting machine—Technic—Mixing and applying the investment to the wax model base and cast—Investing the case in flask—Drying out the case —Casting—Important properties of aluminum in reference to casting— Swaged bases of aluminum—Comparative durability of cast and swaged bases of aluminum—Summary of causes of deterioration of swaged bases— Technic of swaging—Developing the vulcanite shoulders and anchorages— Forming the shoulder—Spurring the base—Anchorage by perforation—Use of a doubler—Some facts on the history of aluminum castings.............. RO a ate NERY Rel eee ihe Sie aeaer © Fatenn, viskega ei eis syaieeOn pan haras Pages 190 to 220 CHAPTER XIV WEIGHTED LOWER DENTURES Dentures of weighted vuleanite—Vuleanite dentures weighted by means of a metallic core—Cast metal bases—Technic of a weighed cast base—Flasking the wax model base plate—Casting the base—Modification of the foregoing method—History of the cheoplastic process. VULCANITE BASEPLATES (Double Vulcanization) Technic of construction—Construction of temporary baseplates—Ideal baseplate —*“ Special ”—Temporary baseplates of metal............. Pages 221 to 232 CHAPTER XV RETENTION OF PARTIAL DENTURES Atmospheric pressure and adhesion—Frictional retention of partial dentures— Specialized frictional appliances—Clasps—Objection to the use of clasps— Advantages derived from the use of clasps—Requisites of a clasp—Adapta- tion—Resilieney—Inherent strength—Gauges of metal commonly employed— Types of clasps most commonly used—Partial flat band clasp—Half round