What Is the Main Advantage of the Combination of Porcelain

Multiple Choice

What is the main advantage of the combination of porcelain and metal for fixed crown and bridge prosthodontics?

A) Direct fabrication of the restoration in the patient's mouth
B) Superior esthetics when contrasted with all-porcelain jacket crowns
C) The use of high-fusing porcelain for superior bonding to tooth structure
D) The strength and durability produced by the bond between a metal internal core and the porcelain covering