Final Answer:
A metallic/porcelain/composite covering more than 3 but NOT all surfaces of the tooth is called a crown. so the correct option is a) Crown.
Step-by-step explanation:
Metallic/Porcelain/Composite Covering: This refers to the material used for dental restorations. Crowns can be made of various materials, including metal, porcelain, or a composite material. so the correct option is a) Crown.
More than 3 but NOT all surfaces of the tooth: A crown covers a significant portion of the tooth, typically more than three surfaces but not the entire tooth. It provides protection and restoration for a tooth's damaged or weakened structure.
Dental crowns are versatile restorations used for various purposes, such as protecting a weakened tooth, covering a large filling, or restoring a broken tooth. Unlike veneers that focus on aesthetics for the front surface or bridges that replace missing teeth, a crown encompasses a broader scope by covering more surfaces.