polycarboxylaatcementen

Polycarboxylate cements (PCCs) are a class of dental restorative materials known for their strength and adhesive properties. They are chemically similar to glass ionomer cements (GICs) but utilize a different polymer system. The setting reaction of PCCs involves the chelation of calcium and aluminum ions from a powdered fluoroaluminosilicate glass by polycarboxylate chains within a liquid polyacid. This ionic cross-linking forms a highly durable matrix. PCCs are recognized for their good marginal integrity and their ability to release fluoride ions, which can help prevent secondary caries. They bond chemically to tooth structure, meaning they do not require mechanical undercuts for retention, which is advantageous for minimally invasive dentistry. Their biocompatibility is also a notable feature, making them suitable for direct pulp capping and as luting cements for crowns and bridges. While they possess excellent physical properties, their aesthetic qualities can sometimes be a limitation compared to composite resins, although advancements are continually being made in this area. The formulation of PCCs can be adjusted to control setting time, viscosity, and other handling characteristics, allowing for diverse clinical applications.