What is the recommended treatment for a fractured distal marginal ridge on a tooth with a large MO amalgam?

What is the recommended treatment for a fractured distal marginal ridge on a tooth with a large MO amalgam?

• A. Direct restoration
• B. Cast restoration
• C. Composite bonding
• D. Dental crown

Answer: (B)

In the case of a fractured distal marginal ridge on a tooth that has a large mesio-occlusal (MO) amalgam restoration, the recommended treatment is a cast restoration. This choice is appropriate for several key reasons. First, a cast restoration, such as an indirect composite or gold alloy, offers superior strength and durability compared to other restorative options. Given that the tooth has already been compromised by a large amalgam filling, it may not have sufficient remaining tooth structure to support a direct restoration or composite bonding effectively. Cast restorations can be designed to provide the necessary structural support and protection against further fracture. Additionally, a cast restoration allows for precise adaptation to the remaining tooth structure. This is crucial, as the integrity of the surrounding tooth tissue must be preserved while ensuring that the new restoration can withstand the forces of chewing without failure. While direct restorations and composite bonding could offer a quick fix, they may not provide the long-term durability required for a heavily restored tooth, particularly one that has experienced a fracture. A dental crown, while also a potential solution, typically refers to a complete coverage restoration, which is well-suited for teeth with extensive damage but may not be necessary here if a cast restoration can adequately address the problem. Overall,

In the case of a fractured distal marginal ridge on a tooth that has a large mesio-occlusal (MO) amalgam restoration, the recommended treatment is a cast restoration. This choice is appropriate for several key reasons.

First, a cast restoration, such as an indirect composite or gold alloy, offers superior strength and durability compared to other restorative options. Given that the tooth has already been compromised by a large amalgam filling, it may not have sufficient remaining tooth structure to support a direct restoration or composite bonding effectively. Cast restorations can be designed to provide the necessary structural support and protection against further fracture.

Additionally, a cast restoration allows for precise adaptation to the remaining tooth structure. This is crucial, as the integrity of the surrounding tooth tissue must be preserved while ensuring that the new restoration can withstand the forces of chewing without failure.

While direct restorations and composite bonding could offer a quick fix, they may not provide the long-term durability required for a heavily restored tooth, particularly one that has experienced a fracture. A dental crown, while also a potential solution, typically refers to a complete coverage restoration, which is well-suited for teeth with extensive damage but may not be necessary here if a cast restoration can adequately address the problem.

Overall,