Post and core is a dental procedure used to restore a severely damaged tooth, particularly after a root canal treatment. When a tooth lacks enough structure to support a crown, a post is inserted into the root canal to provide stability, and a core buildup is added for reinforcement. Posts can be made of materials such as metal, fiber, or ceramic. The post-and-core procedure ensures that the tooth remains strong enough to hold a dental crown, thereby extending its lifespan. The success of the procedure depends on proper post-placement and adequate bonding of the core material to the remaining tooth structure. With advancements in dental materials and techniques, post and core restorations provide a reliable solution for preserving compromised teeth.