A post and core (or buildup) is a restoration used to support a crown when there is insufficient natural tooth structure remaining after a root canal. This procedure is commonly performed in cases where a tooth has been significantly weakened due to decay, fractures, or previous restorations.
The tooth first undergoes a root canal to remove infection and seal the canals. A post (metal or fiber-reinforced composite) is then inserted into the root canal to provide additional support. A filling material (typically composite resin or dental cement) is applied afterwards around the post to create a stable foundation for the final crown.
This procedure is an essential step in preserving endodontically treated teeth and ensuring their long-term success. A post and core can not omly improve overall oral function and appearance, but can help strengthen the tooth and prevent fractures, and extending the longevity of a previously treated tooth.