Resin base denture bases are typically made of which material?

Resin base denture bases are typically made of which material?

• A. PMMA
• B. Pure gold
• C. Zirconia
• D. Ni-Cr alloy

Answer: (A)

Resin base denture bases are made from PMMA, a polymethyl methacrylate acrylic resin. This material is ideal because it can be processed easily in heat- or chemically-cured forms, bonds well to denture teeth, and provides a lightweight, esthetic base that is simple to finish and repair. PMMA also offers good biocompatibility and color that resembles natural oral tissue, making it the standard choice for resin bases. Metal options like a pure gold alloy or Ni-Cr alloys are used for metal bases or frameworks, not for resin bases, because they are heavier and require different processing. Zirconia is a ceramic material used in other prosthetic contexts and would be brittle and less practical for a resin-based denture base.

Resin base denture bases are made from PMMA, a polymethyl methacrylate acrylic resin. This material is ideal because it can be processed easily in heat- or chemically-cured forms, bonds well to denture teeth, and provides a lightweight, esthetic base that is simple to finish and repair. PMMA also offers good biocompatibility and color that resembles natural oral tissue, making it the standard choice for resin bases.

Metal options like a pure gold alloy or Ni-Cr alloys are used for metal bases or frameworks, not for resin bases, because they are heavier and require different processing. Zirconia is a ceramic material used in other prosthetic contexts and would be brittle and less practical for a resin-based denture base.