The properties of a glass polyalkenoate (ionomer) cement incorporating sintered metallic particles

Abstract

The physical properties and setting characteristics of a glass polyalkenoate cement reinforced with sintered metallic particles, have been compared with those of a conventional material from the same manufacturer. The compressive strength, the compressive fatigue limit and the abrasion resistance rating are improved with the addition of silver particles in the glass. At the same time, the new material undergoes a more rapid setting reaction than the conventional cement and is significantly less susceptible to erosion in pH 4.0 buffer. The silver ‘reinforced’ material was similarly susceptible to 2-body abrasion with an element of fatigue, but was more susceptible to 3-body abrasion and exhibited a lower modulus of elasticity and flexural strength when compared to the conventional material. The proposed uses for this new material are discussed with regard to these findings.