During the mixture of the two compounds (liquid and solid) happens amalgamation or trituration, which comprises the “fusion” of the solid particles in mercury. In the end of this process is obtained a plastic compound, which crystallizes forming amalgam.
The microstructure of this material is very complex and depends from the features of the particles that constitutesthe solid part. The study of amalgamation and the result compound is done for many years. These studies have revealed the existence of many complex phases, which are different from those in metallic bonds, as a result of their dynamic development, undergoing important processes of internal reorganization (1).
For a long period of time, was thought that amalgam, after setting was a material very solid and inert, where all the mercury, was included inside of chemical bonds with other metals and had no possibility to be released in the oral cavity. This would be an ideal for every dental restoration material. But the studies have revealed the opposite. For more than 20 years, is confirmed that from amalgam alloy is released continually mercury, in the saliva of patients with amalgam fillings in their mouth.
During the mixture of the two compounds (liquid and solid) happens amalgamation or trituration, which comprises the “fusion” of the solid particles in mercury. In the end of this process is obtained a plastic compound, which crystallizes forming amalgam. The microstructure of this material is very complex and depends from the features of the particles that constitutesthe solid part. The study of amalgamation and the result compound is done for many years. These studies have revealed the existence of many complex phases, which are different from those in metallic bonds, as a result of their dynamic development, undergoing important processes of internal reorganization (1). For a long period of time, was thought that amalgam, after setting was a material very solid and inert, where all the mercury, was included inside of chemical bonds with other metals and had no possibility to be released in the oral cavity. This would be an ideal for every dental restoration material. But the studies have revealed the opposite. For more than 20 years, is confirmed that from amalgam alloy is released continually mercury, in the saliva of patients with amalgam fillings in their mouth.
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