Dental Materials

Casting of glass or ceramic A castable ceramic is prepared in a similar manner as metal cast preparation . Glass is heated to 1360 degrees & then cast. Phosphate bonded investments are used for this purpose .…

POLYCARBOXYLATE CEMENT  Use:. The primary use of polycarboxylate cement is as a cementing medium of cast alloy and porcelain restorations. In addition, it can be used as a cavity liner, as a base under metallic restorations, or as a temporary restorative material.  Clinical Uses Polycarboxylate cement is used in the same way as zinc phosphate cement, both as an intermediate base and as a cementing medium.  c. Chemical Composition.  …

Chromium Alloys for Partial Dentures Applications - Casting partial denture metal frameworks Classification a. Cobalt-chromium b. Nickel-chromium c. Cobalt-chromium-nickel Composition a. Chromium-produces a passivating oxide film for corrosion resistance b. Cobalt-increase~ the rigidity of the alloy c. Nickel-increases the ductility of the alloy d. Other elements-increase strength and castability Manipulation a. Requires higher temperature …

Solution Liners (Varnishes) Applications  o    Enamel and dentin lining for amalgam restorations o    Enamel and dentin lining for cast restorations that are used with non adhesive cements o    Coating over materials that are moisture sensitive during setting Components of copal resin varnish o    90% solvent mixture (e.g., chloroform, acetone, and alcohol) o    10% dissol…

PROPERTY INGREDIENT   Silver Tin Copper Zinc Strength Increases       Durability Increases       Hardness     …