Which restoration is typically selected when correction of axial contours cannot be achieved conservatively?

The selection of a cast crown as the restoration when conservative correction of axial contours cannot be achieved is indicative of its structural integrity and ability to provide a comprehensive solution for significant dental issues. Cast crowns are often used in cases where dental structure has been compromised due to decay, trauma, or substantial existing restorations. They can be precisely fabricated to restore the tooth's original shape and functionality, as well as to improve aesthetics when necessary.

When axial contours, which refer to the contours along the sides of the tooth, are beyond the scope of conservative measures like fillings or onlays, a cast crown can fully encompass the tooth, offering a more robust approach. Unlike options like intracoronal restorations, which might only address part of the tooth structure, a cast crown provides complete coverage and support, making it ideal for restoring the natural contours of a tooth while enhancing its strength.

In contrast, other options like removable partial dentures (RDP) or fiber-reinforced restorations may not provide the same level of structural support or contour restoration needed in more severe cases. Thus, cast crowns are the preferred choice when significant axial contour failure must be corrected and require a restoration that can withstand functional forces while ensuring the longevity of the treated tooth.