Which material is recognized for providing better retention in post and core applications?

Metal is recognized for providing better retention in post and core applications due to its superior mechanical properties. Metal has high tensile strength and rigidity, which allows it to effectively resist forces that could dislodge the restoration. In post and core scenarios, metal posts can create a robust anchorage in the remaining tooth structure, especially in cases of significant loss of coronal tooth structure.

Additionally, the use of metal allows for effective bonding with dental cement, which further enhances retention. The dimensional stability of metal ensures it maintains its shape over time, contributing to the long-term success of the post and core restoration in supporting crowns or bridges. This characteristic of metal significantly sets it apart from other materials, which may not provide the same level of retention and strength.

While other materials such as composite resin and amalgam can provide acceptable retention for certain cases, they do not typically match the overall strength and durability that metal offers in a post and core system.