Corrosive failure of metals and alloys in dentistry: a review

Abstract

In order to restore the normal functions of the dentition, metals and alloys are often a good choice for their desirable mechanical properties. Corrosion has been considered as the most important factor in the selection of metallic dental restorations, appliances, and implants, and one of the most common causes of failure. Although gold alloys have excellent biological response, their use has declined due to their high cost. Various types of dental alloys have replaced the inert gold alloys, such aloys sometimes show superior strength but less resistance to corrosion and degradation. Therefore, increasing knowledge about interaction of such dental alloys with oral tissues is mandatory. This includes understanding the alloy composition, interaction with possible agents present in the oral cavity, and different factors influencing their reactivity. The current review describes the different forms of