Abstract: Radiopaque dental compositions, radiopaque dental markers, and methods for making such markers are described, as well as kits containing combinations of, inter alia, the markers, molds for making the markers, and materials for sculpting the markers. The compositions contain a radiopaque material, for example diatrizoate sodium, in a polymeric binder. The markers may be in the shape of teeth, and can be sculpted or ground to conform to a patient's gingival surface and to occlude with an opposing tooth. The marker can then be placed in a stent for purposes of making radiographs of a patient's mouth from which an oral surgeon can determine the optimal placement of a permanent dental implant.

Abstract: Organic vehicle systems are described which are used in brazing alloy pastes. A principal feature of the systems is used of non-aqueous solvents to avoid reactions with alloy constituents.

Abstract: A flexible brazing alloy tape with a binder having less than 3% by weight total organic content and no more than about 1% by weight residual ash after melting is provided by use of a polyacrylic acid polymer, glycerol and water as a vehicle in which the powdered alloy is dissolved to form a slurry prior to casting. The polyacrylic acid polymer has a relatively low viscosity defined by a molecular weight of about 450,000. The slurry is deposited on a substrate and is dried and the resulting flexible low organic self-supporting tape is removed from the substrate to be formed into desired shapes as preforms for brazing. Alternatively a brazing alloy tape comprising a binder having a similarly low total organic content is produced by mixing the powdered alloy with polyvinyl alcohol, glycerol and water and thereafter casting the tape as described above.