Which dental material is known for chemically bonding to dentin?

Glass ionomer cement is known for its unique ability to chemically bond to dentin. This property stems from the ion exchange and the chemical reaction that occurs when glass ionomer materials are placed in contact with tooth structure. Their composition, which includes glass particles and polyacrylic acid, allows for this bond to form, creating a strong interface with dentin that enhances retention and reduces microleakage.

The chemical bonding provided by glass ionomer also contributes to its biocompatibility and fluoride-releasing properties, which can aid in the prevention of further carious lesions at the interface. This makes glass ionomer particularly advantageous in both restorative and preventive dental applications.

Other materials listed, such as composite resin, can bond to both dentin and enamel primarily through mechanical retention and adhesive systems, rather than a true chemical bond. Amalgam is not known for bonding to dentin but relies on mechanical retention in prepped cavities. Acrylic materials, typically used for dentures and other removable prosthetics, do not form bonds with dentin. Thus, glass ionomer stands out for its specific ability to chemically bond with dentin.