Post and core is a dental restoration procedure used to rebuild and strengthen a tooth that has been severely damaged, usually following a root canal treatment. This procedure is typically performed when the remaining tooth structure is insufficient to support a dental crown.
Components of Post and Core:
- Post:
- The post is a small, metal or fiber rod that is inserted into the root canal of the tooth after the root canal treatment.
- It offers stability and support, serving as an anchor for the core material.
- The post can be prefabricated or custom-made to fit the tooth’s root canal.
- Core:
- The core is a build-up material (often composite resin or dental amalgam) that is placed around the post.
- It rebuilds the tooth structure, allowing the dentist to create a strong foundation for placing a dental crown.
- The core mimics the natural tooth structure that was lost, allowing for the crown to fit securely.
Steps of the Procedure
- Root Canal Treatment: First, a root canal procedure is performed to remove the tooth’s damaged or infected pulp, leaving an empty root canal.
- Post Placement: After the root canal, a post is inserted into the canal, typically after a small part of the canal is prepared for the post.
- Core Build-Up: Core Build-Up: The core material is shaped around the post to rebuild the missing section of the tooth
- Crown Placement: Once the post and core are in place and the structure is stable, a dental crown is placed on top to restore the tooth’s function and appearance.
Purpose of Post and Core
- Strengthen the tooth: It provides structural support to the weakened tooth, helping it withstand the pressure of chewing.
- Foundation for a crown: The post and core act as a base for a dental crown, which protects the tooth and restores its natural look.
- Prevents tooth fracture: Without this restoration, a tooth with significant damage is prone to fractures.
Indications
- When a tooth has severe decay or has lost a considerable amount of its structure.
- After a root canal procedure, especially if little tooth material remains to hold a crown.
- In teeth with severe damage, such as those that are broken or have been significantly worn down.
Materials Used
- Posts: Can be made of metal (like stainless steel or titanium) or fiber-reinforced materials.
- Core: Typically, materials like composite resin or dental amalgam are used, chosen for their durability and ability to bond with the tooth.
