Electrum is a metal alloy mainly consisting of gold, silver and traces of some other metals. This naturally occurring alloy has a long history of being used for making coins, vessels and also for coatings. It was referred to as âgoldâ or âwhite goldâ by ancient Greeks.
In Interstitial defect, atom occupies the interstitial space of the lattice structure of solid crystal. In Substitutional defect, the foreign atom occupies only the lattice site of a crystalline solid. Interstitial defect may occur by the atoms of either same solid (called self-interstitial) or foreign material. Substitutional defect is always caused by foreign atoms.
Bone Defects and Furcation Involvement Part 1. Periodontal disease involves the peridontium consisting of the gums, alveolar or jaw bone, the periodontal ligament and the cementum of tooth. Therefore it is of no surprise if the disease leads to bone defects in our jaw bone or cause furcation involvement.