Dental Amalgam Stabilization by Selective Interfacial Amalgamation

Abstract

The purpose of this investigation was to explore the feasibility of enhancing the electrochemical stability of dental amalgam restorations by a process of “selective interfacial amalgamation.” If dental amalgam restorations can be selectively alloyed at the tooth‐amalgam interface, to a minor thickness as compared with the dimensions of the bulk amalgam, so as to present a more electrochemically stable phase than γ2 to the oral environment, corrosion will be reduced and desirable qualities of existing amalgams can be utilized.

The development of resin-bonding for amalgam restorations

“…20,21 A further attempt to improve the interface between amalgam and tooth by bonding was made by Zardiackas in 1976. 22 He developed the so-called 'selective interfacial amalgamation' liner by combining components of polycarboxylate cement with amalgam alloy particles. This liner was tested in tensile adhesion and microleakage tests and found to give tensile bond strengths of around 3.5 MPa, with shear punch bond strengths up to 15 MPa, 23 and to inhibit microleakage as well.…”

Comparison of Efficacy of Newer Adhesive Systems with Conventional Liners under Silver Amalgam Restorations – An In Vitro Trial

“…To overcome the disadvantages of amalgam and reap the benefits of bonding composite, the concept of bonded amalgam was introduced in 1976 by Zardiackas. [3] This technique involves adhesive systems that reliably bond to enamel and dentin. Several studies have concluded that bonded amalgam restorations result in reduced marginal leakage at the tooth-amalgam interface compared to conventional amalgam restorations.…”