TOPIC: FINISHING AND CEMENTATION

🎯 KEY POINTS:

🔹In Chronic Xerostomic patient, cervical caries and periodontitis are prime reasons for FPD failure.

🔹Beilby layer is a microscopic surface layer produced during polishing of gold crowns.

🔹Metamerism is a phenomenon of an object appearing of different colours when viewed under different light source.

🔹The use of dissimilar metallic restorations in the same mouth may result in the creation and flow of galvanic currents.

🔹Sandblasting is recommended on the internal surface so that it becomes more conducive to nonadhesive cement.

🔹Kieselguhr is a mild abrasive and polishing agent.

🔹Sand or other forms of quartz called flint are coated on discs and are available in various grits.

🔹Emery is a mixture of aluminium oxide and iron oxide, called corundum.