Which of the following is essential when fabricating a Maryland Bridge?

When fabricating a Maryland Bridge, minimal tooth reduction is essential because this type of bridge is designed to be less invasive compared to traditional fixed bridges. The Maryland Bridge consists of a prosthetic tooth with a metal framework on the back that adheres to the abutment teeth, allowing for a more conservative approach in tooth preparation.

By minimizing the reduction of the adjacent teeth, a dentist can preserve more of the natural tooth structure, which is beneficial for the long-term health of those teeth. This conservative approach also helps to maintain the strength and integrity of the abutment teeth, while still providing adequate support for the pontic (the false tooth).

While extensive tooth preparation may provide more retention in various types of restorations, it is not aligned with the goals of minimally invasive dentistry, which is a key principle of achieving a successful Maryland Bridge. Similarly, a single unit design refers to the way the bridge is constructed rather than the preparation required, and metal framework visibility is not a desired outcome; rather, it should be aesthetically pleasing and blend in with the surrounding teeth.