The restorative material on tooth #4 can be described as which material?

• A. Porcelain
• B. Composite
• C. Acrylic
• D. Gold

Answer: (C)

Composite resin is chosen for a posterior direct restoration because it is a tooth-colored material that can be placed directly into the cavity and bonded to enamel and dentin. This allows a conservative restoration on a premolar like tooth #4 with good esthetics and functional integrity, without the need for extensive tooth reduction. Porcelain, on the other hand, is typically used for indirect restorations such as crowns or inlays/onlays made in a lab, not for a direct filling. Gold is a durable metal used for indirect restorations and is not tooth-colored, which is a key reason it isn’t described for a typical anterior/posterior direct restoration in today’s practice. Acrylic is mainly used for provisional restorations or denture bases, not final permanent restorations on natural teeth. So the description fits composite resin.