Which material is commonly used as a tooth-colored filling that bonds to tooth structure?

Which material is commonly used as a tooth-colored filling that bonds to tooth structure?

• A. Amalgam
• B. Varnish
• C. Composite Resin
• D. Cement

Answer: (C)

Composite resin is the tooth-colored filling material that bonds to tooth structure. It combines a resin matrix with inorganic fillers and is designed to be etched and bonded to both enamel and dentin using a bonding agent. This dual action creates a reliable seal at the margins and helps support the remaining tooth, reducing fracture risk. Its color blends with natural teeth, making it an esthetic choice for visible areas and for restorations in front teeth or small to moderate cavities. It’s placed in layers and cured with a dental light, allowing precise shaping to match natural contours. In contrast, amalgam is a metal-filled material that does not bond to tooth structure; varnish is a protective coating used under restorations rather than a filling; cement is used for luting crowns or as temporary restorations rather than for a direct tooth-colored filling.

Composite resin is the tooth-colored filling material that bonds to tooth structure. It combines a resin matrix with inorganic fillers and is designed to be etched and bonded to both enamel and dentin using a bonding agent. This dual action creates a reliable seal at the margins and helps support the remaining tooth, reducing fracture risk. Its color blends with natural teeth, making it an esthetic choice for visible areas and for restorations in front teeth or small to moderate cavities. It’s placed in layers and cured with a dental light, allowing precise shaping to match natural contours.

In contrast, amalgam is a metal-filled material that does not bond to tooth structure; varnish is a protective coating used under restorations rather than a filling; cement is used for luting crowns or as temporary restorations rather than for a direct tooth-colored filling.