A post and core is a type of dental restoration that is utilized when there is inadequate tooth structure remaining to support a traditional restoration. Most of the cases it need after extensive tooth structure loss due to advanced dental caries or tooth fracture. A small rod is inserted into the root space of the tooth and protrudes from the root a couple of millimeters after performing root canal treatment (RCT). This rod is referred to as a post. Commonly it is made up of metal for back teeth or fiber post for anterior cosmetic region. The post is then used to hold a filling material, or core, in place. Without this post there would not have been enough tooth structure remaining to hold the filling required. Mostly the post and core is covered with a crown.