HOSA Dental Terminology Practice

What is the composition of a traditional full crown?

1. Plastic base with metal coating

2. Cast metal that replaces the entire crown area

3. Composite resin for temporary use

4. A layer of enamel over soft material

The correct answer is: Cast metal that replaces the entire crown area

The traditional full crown is primarily made of cast metal, which is designed to fit over and replace the entire crown area of a tooth. Cast metal crowns are created using a precise molding process that allows for strong and durable restorations. This makes them highly effective in restoring the structure of a tooth, especially in cases where significant decay or damage is present. The characteristic of a full crown is that it covers the entire visible portion of the tooth above the gum line, providing stability and protection. Cast metal crowns are particularly favored in situations where strength is a priority, such as on molars that endure significant chewing forces. Their resilience against wear and fracture makes them a practical choice for long-lasting dental restorations. In contrast, options mentioning plastic or composite resin are typically associated with temporary restorations or other types of crowns, which are not meant to provide the same level of durability and support as a full crown made of cast metal. Additionally, a layer of enamel over soft materials does not accurately represent the structure of a traditional crown, as crowns are meant to replicate the natural tooth in functionality and strength.