Post & Core: Reinforcing Foundations for Dental Restorations
In the realm of restorative dentistry, the Post and Core system plays a pivotal role. This procedure is employed when a significant portion of a tooth’s structure is lost due to decay, fracture, or after root canal treatment. A Post and Core involves placing a post within the root canal of the tooth and building a core on top of it, which serves as a solid foundation for a subsequent crown restoration. This article sheds light on the importance of Post and Core in dental restorations, the types available, and where dental professionals can source these critical components.
The Importance of Post & Core in Dental Restoration
- Structural Support: The post provides internal support to the tooth, anchoring the core and the eventual crown in place, especially in teeth with extensive structural loss.
- Foundation for Restoration: The core replaces the missing tooth structure, offering a stable base for the crown.
- Preservation of Tooth Integrity: This system helps in preserving what remains of the natural tooth structure, prolonging its functionality.
Types of Post and Core Systems
- Metal Posts: Traditionally used, these include stainless steel, titanium, or gold posts. They offer strength but may not be aesthetically pleasing in some cases.
- Fiber Posts: Made from materials like carbon or glass fibers, these posts provide good aesthetic results and have a modulus of elasticity similar to dentin, reducing the risk of root fractures.
- Ceramic Posts: These offer excellent aesthetic results and are biocompatible, making them suitable for patients with metal allergies.
- Prefabricated Posts: These are ready-made in various sizes and are used in combination with dental cements.
- Custom Cast Posts and Cores: Made in a dental lab, these are tailored to fit the exact contours of the prepared root canal and are typically used when prefabricated posts are unsuitable.
Application of Post & Core
The procedure typically follows root canal therapy. The post is inserted into the prepared root canal, followed by the construction of the core using dental composite or other materials. Finally, a dental crown is placed over the core to restore the tooth’s shape, size, and function.