What type of porosity in inlays is related to overheating of the alloy?

Gaseous porosity is associated with the overheating of the alloy in dental inlays. When alloys are heated excessively during the casting or fabrication process, they can release gases or produce vapors that become trapped within the material as it solidifies. This entrapment leads to the formation of gas bubbles, which contribute to the overall porosity of the inlay. The presence of these gaseous impurities can compromise the mechanical properties and aesthetic quality of the final product.

In contrast, shrinkage porosity typically results from the metal cooling and solidifying, which causes a volume reduction and may leave voids in the structure. Pore size distribution refers to the range of sizes of the pores present and does not directly indicate a type of porosity related to overheating. Surface porosity involves defects on the surface of the material that may come from various factors during the processing and is not specifically linked to overheating. Thus, gaseous porosity is specifically linked to the overheating of the alloy in this context.