What should be noted when restoring an endodontically treated tooth in terms of coronal structure?

When restoring an endodontically treated tooth, the presence of coronal structure significantly influences the restorative approach. The idea that the post design has a limited role if more than 2 mm of coronal structure remains is crucial. Having adequate coronal tooth structure allows for the use of direct restorative materials, such as composite resins, which can effectively bond to the remaining tooth structure and provide sufficient mechanical support without the immediate need for a post.

In cases where there is adequate remaining coronal tooth structure, the reliance on posts can be reduced, as they are primarily beneficial in teeth with significant loss of structure. This emphasis on preserving and utilizing healthy coronal dentin aligns with current principles of restorative dentistry, which advocate for minimal invasiveness and maximizing the natural tooth structure for effective restoration.

In contrast, other considerations such as increased post length leading to increased stresses or the characteristics of fiber-made posts for circular canals, while important in certain scenarios, do not take precedence over the foundational principle of preserving coronal structure when it is available. Similarly, the notion that larger post diameters may decrease retention might apply in some specific contexts but does not outweigh the primary focus on preserving the coronal structure for effective restoration of an endodontically treated tooth.