GlasIonomomerZemente

GlasIonomomerZemente are a class of dental restorative materials known for their unique properties. They are primarily composed of an acid-soluble glass powder and a polyalkenoic acid liquid. When mixed, these components undergo an acid-base reaction, leading to the formation of a solidified cement matrix. One of the key advantages of glass ionomer cements is their ability to release fluoride ions, which can help prevent secondary caries. This fluoride release is a continuous process, although the rate decreases over time. Furthermore, glass ionomer cements form a chemical bond with tooth structure, specifically with the dentin and enamel. This adhesion is achieved through ionic interactions between the polyacid molecules and the calcium ions in the tooth. This chemical bonding, along with their good biocompatibility, makes them a suitable choice for various dental applications. They are commonly used for restorations in deciduous teeth, as liners or bases under other restorative materials, and for fissure sealing. The aesthetic properties of glass ionomer cements have improved over the years, with variations available in different shades to better match natural tooth color. However, their mechanical strength and wear resistance are generally lower compared to composite resins, which can limit their use in high-stress areas of permanent dentition. Despite this, their fluoride-releasing capability and biocompatibility continue to make them a valuable material in restorative dentistry.