Glass Ionomer is a type of dental material used for fillings, cements, and liners. It is made from a mixture of glass particles and an organic acid, which allows it to bond well with tooth structure. This material is known for its ability to release fluoride, helping to protect teeth from decay. One of the key benefits of Glass Ionomer is its biocompatibility, making it safe for use in the mouth. It is often used in areas where aesthetics are less critical, such as in the back teeth, and is particularly useful for treating cavities in children due to its ease of application.