Before revision: It is a type of crown-root foundation , but it is an independent supplement and usually consists of a pin or peg and a full crown permanently connected (i.e., without cement) and placed in the patient's oral cavity during a single visit.
After revision: It is a type of , but it is an independent supplement and usually consists of a pin or peg and a full crown permanently connected (i.e., without cement) and placed in the patient's oral cavity during a single visit.