Recovery of Mercury from Dental Amalgam Scrap-Indian Perspective

Dental amalgams, composed of mercury and other metals, play a crucial role in dental restorative practices due to their economic value. This study aims to explore the processes involved in the amalgamation of silver, tin, and copper with mercury, highlighting the resulting metallurgical phases and their properties. The methodology includes detailed analysis and reaction equations detailing how new phases, such as γ1-Ag2Hg3, form during the amalgamation process, contributing to the material's properties and performance. The results indicate that different compositions of dental amalgams, particularly those containing varying copper levels, result in distinct structural characteristics that affect hardness, strength, and brittleness. Specifically, higher copper content up to 30% enhances workability while reducing fragility, whereas lower copper levels lead to a harder, stronger amalgam. This study's findings suggest significant implications for improving dental amalgam formulations to enhance their performance, addressing potential issues related to corrosion and material degradation over time.