What is the main application of type I glass ionomer cement in dentistry?

Type I glass ionomer cement is primarily used for cementing metal restorations, which makes this application significant in restorative dentistry. This type of cement has favorable properties that allow it to bond effectively to both the tooth structure and metal surfaces, providing a strong and durable connection. The chemical adhesion that glass ionomer cement offers is particularly beneficial for maintaining the integrity of metal restorations, as it effectively seals margins and helps to prevent micro-leakage between the restoration and the tooth.

While type I glass ionomer cement is not typically used for directly restoring teeth, it serves as a reliable material for cementing various components, including crowns and bridges. Its ability to release fluoride adds an additional benefit, as it can contribute to the prevention of caries around the restoration site. This aspect of glass ionomer cement enhances its appeal in clinical practice, especially in situations where a strong bond with metal restorations is essential for the longevity of dental work.

Alternative applications mentioned, like restoring teeth and providing a dentin bonding agent, usually involve different types of materials more suited for those specific purposes, such as composite resins or dentin bonding agents, rather than type I glass ionomer cement.